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Protection and control
Smart earth leakage
protection
Smart earth leakage protection
P1- Industrial earth leakage protection
WGC
Earth leakage transformres WGC Series · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · P1-15
WG
WG Series Earth Leakage transformers· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · P1-16
RG1M
Electronic earth leakage relay with external transformer of the WG / WGC Series · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · P1-17
RGE / RGE-R
Electronic earth leakage relay with external transformer of the WG / WGC Series · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · P1-19
RGU-10 / RGU-10 C
Electronic earth leakage relay with external transformer of the WG / WGC Series · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · P1-21
CBS-4 / CBS-4 C
Earth leakage monitoring and signaling unit of the external transformer of the WG / WGC Series · · · · · · · · · · · · · · · · · · · · · · · · · · · · P1-23
CBS-8
Earth leakage monitoring and signaling unit of the external transformer of the WG / WGP / WGC Series· · · · · · · · · · · · · · · · · · · · · · · P1-25
WGP
Earth leakage Transformers of the WGP Series (only for CBS-8)· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · P1-27
WRU-10
Relé diferencial con transformador incorporado con display (tipo A) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · P1-28
WRU
Earth leakage relay with built-in transformer (type A) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · P1-30
WGBU
Transformer with built-in earth leakage relay · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · P1-32
WRN-22
Earth leakage relay with built-in transformer· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · P1-35
P2- Self-reclosing overload and earth leakage protection
REC2
Self-reclosing earth leakage relay· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · P2-47
WRU-10 RAL
Differential relay with built-in transformer and display (type A)· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · P2-49
RGU-10 RAL
Earth protection Relay WG Series· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · P2-51
CBS-4 RA / RAL
Earth leakage relay station WG / WGC Series · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · P2-53
P1/2-2
Protection and control
Protection and control
CBS-8
Earth leakage monitoring and signaling unit of the external transformer of the WG / WGP / WGC Series· · · · · · · · · · · · · · · · · · · · · · P2-55
WRKRT-25
Earth leakage relay with built-in transformer· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · P2-57
MCB
MCB Series Circuit-Breaker · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · P2-59
WRU-10 MT
Relé diferencial con transformador incorporado con display (tipo A) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · P2-61
RGU-10 MT
Earth leakage Relay WG + MT Series · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · P2-63
RGMT
Earth leakage Relay WG + MT Series · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · P2-65
MT
Motorized circuit breaker (up to 63 A)· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · P2-67
MT-FDE
Motorized circuit-breaker (from 63 A) · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · P2-69
WRGMT
Complete overload and earth leakage protection and reclosure equipment· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · P2-71
RRM
Overload reclosing relay· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · P2-72
P1/2-3
Industrial earth leakage protection
P1/2-4
Industrial earth leakage protection
Smart earth leakage protection
The "protection" and "continuity" of the
electrical power supply are two terms
that must not be separated if we wish to
guarantee the safety of users and electrical installations.
The recent addition of receivers or loads
that generate distortion in the electricity
grid (speed variators, electronic startup units, computer equipment, lighting
with electronic ballasts, etc.) has made
necessary the use of protection systems
that can distinguish between defects in
the installation and the electrical alterations that cause the unwanted tripping
of protection systems.
The new range of earth leakage protection products offers state-of-the-art
performance to guarantee the continuity
and safety requirements:
}}Monitoring in true root mean square.
}}High frequency filtering
}}Inverse curve delay (instantaneous
and selective)
}}Adjustment of the nominal sensitivity
trigger
}}Display of the fault current (monitoring of protection systems)
Monitoring the status of protections allows us to do the following in the electrical installation:
}}Analyse the insulation conditions.
}}Preventive and corrective mainte-
nance.
}}Reduce production downtime. Decrease maintenance costs. Quick location of faults.
SAFETY OF
PERSONS AND
MATERIALS
SAFETY OF
PERSONS AND
MATERIALS
4 earth leakage protection methods
Immunised protection
Monitoring
Remote control
Reset
1
P. /2
CONTINUITY
ELECTRICAL
POWER SUPPLY
Immunised protection
Monitoring
Immunised protection
Protection
P1/2-5
Industrial earth leakage protection
Definition
When the earth leakage protection system detects a fault current, it acts on the
electrical installation being protected,
opening the circuit while interrupting
the supply of electrical energy, thus preventing the danger of electrocution for
persons when the fault current reaches
dangerous values, either as a result of
direct or indirect contact, including any
potential damage caused to goods and
materials.
An earth leakage protection system is
composed of three clearly different parts:
}}Detecting element or sensor
}}Relay
}}Circuit breaker
ceived by the sensor and either sends
the trigger signal to the associated circuit breaker or not, depending on the
sensitivity and delay time values programmed.
Circuit breaker: This element acts as
the current interrupting element. It can
be a circuit breaker (with trigger coil), a
contact, etc.
These three elements can be found in
CIRCUTOR's products with different
configurations:
}}All elements separately
}}Relay with internal transformer
Detecting element or sensor: Current transformer that detects the earth
leakage current of active conductors in
an installation, sending a proportional
signal to the relay. It can have a toroidal
or rectangular geometry, depending on
the arrangement of plates or the wiring
of the installation location.
The correct operation of the sensor requires the path of capacitors to be as
perfectly aligned as possible.
Relay: Smart protection element. It
measures and treats the signal re-
Immunised earth leakage protection
Nowadays, "sympathy" or unwanted
triggers are quite common in modern installations. In these cases, one or more
earth leakage switches are triggered simultaneously, protecting an installation
from the leakage currents sent to earth
as a result of capacitive effects caused
by the installation.
Loads with no earthed capacitors
}}The installation's cables cause earthing condensation effects. The longer the
cable, the greater the capacity effect
The insulation existing between the unit
and the earthing elements can be represented with a pure Ohmic resistance.
If the resistance is not high enough, no
current will pass through the earthing
elements. The leakage current is zero
(current passing to earth under normal
conditions).
}}The capacitors of EMI filters in the
equipment with electronic power regulation
In case there is an insulation fault, current will pass through earthing elements,
the so-called fault earthed current, Id.
Said capacitive effects can explained by
two reasons:
P1/2-6
The different loads or consumption of an
installation can be classified in two main
groups, depending on the type of insulation from earth:
Industrial earth leakage protection
In this case, we must simply adjust the
sensitivity and delay time to guarantee
the adequate protection.
Loads with earthed capacitors
The current passes through the earthing
elements as a result of the unit's operations through its capacitors. In addition,
the length of cables in an electrical installation can lead to capacitive earthing
faults, which would lead to this situation.
The current can be injected with two
methods:
Permanent Leakages.
The unit injects current in the earthing
elements permanently. This type of behaviour is closely tied to the use of EMI
filters, which are installed in most machines or loads with electronic power
regulation, in order to comply with the
electromagnetic compatibility directives.
This type of filter prevents the high frequency distortion generated by the receiver from being returned to the grid.
However, it is transferred through the
earthing capacitors. It also transfers indirectly the fundamental frequency and
its corresponding harmonics, so that the
leakage is usually a set of overlapping
high and low frequency signals. Therefore, it increases the risk of an earth
leakage trip with no real earth leakage
current.
Transient Leakages.
It has the same capacitive effects of cables and the filters mentioned above for
transient overvoltages caused by grid
switching effects, the connection-disconnection of circuits or effects that are
simply caused by atmospheric agents.
In case of loads with earthed capacitors, the basic problem for the protection of the system is to distinguish which
earthed current is part of the unit's operation and which is part of an insulation
defect. Electromechanical earth leakage relays do not usually solve these
situations.
The immunised earth leakage protection offered by CIRCUTOR has evolved in relation
to five factors, in order to satisfy the needs of our customers, catering for the current
demand as regards the safety and continuity of the supply of electricity:
}}MEASUREMENT IN TRUE ROOT MEAN SQUARE (TRMS) AND CLASS A
}}IMMUNE TO TRANSIENT LEAKAGES
}}HIGH FREQUENCY FILTERING
}}ADJUSTMENT OF THE TRIGGER OF I∆n
}}INVERSE CURVE
P1/2-7
Industrial earth leakage protection
Measurement in TRMS and Class A
The voltage and current wave shapes
have stopped being complete sine
waves since the loads distributed in the
installations are not linear. The continuous and harmonic components can distort the wave shapes, whereby it will be
necessary to take more accurate measurements.
CLASS AC
The earth leakage devices used in domestic installations or that protect loads
that do not cause distortions can be of
the AC Type. These devices are marked
with a symbol, in compliance with the IEC 61008-1
Standard.
The current range of electronic earth
leakage switches measures the rootmean-square-value (TRMS) of leakage
currents by sampling it.
The wave shapes in installations with
linear resistive loads are pure sinewaves. However, the figure shows how
the mean value will not work to measure
the root-mean-square-value with accuracy when it stops being a complete
sine-wave.
In accordance with these problems,
the IEC 61008-1 Earth Leakage Switch
Standard determines the types of operation, depending on the type of wave.
Two types are defined, Class AC and
Class A.
CLASS A
In the presence of non-linear receivers,
Type A earth leakage protection systems must be used, which means that
rectified currents can be measured with
a continuous component of up to 6 mA,
including non-distorted currents (AC
type), marked by the corresponding IEC 61008-1
Standard.
Immunity against transient leakages
The IEC 61008-1 Standard defines two
types of ray-type curves to check the
correct operation of an earth leakage
device: an overload and an overvoltage wave. The overload wave shows
the effects caused in the measurement
of the earth leakage device and the overvoltage wave shows the effects in the
power supply.
Current: Curve 8 / 20 µs: ≈ 5 kA
Voltage: Curve 1.2 / 50 μs: ≈ 4 kV
P1/2-8
The behaviour of earth leakage protection units in the case of transient
overloads and overvoltages is vital to
maintain the continuity in the supply of
electricity. Therefore, the immunised
earth leakage protection relays manufactured by CIRCUTOR can support
very high peaks.
Industrial earth leakage protection
The IEC 479-1 / UNE 20-572-92 Standard describes the effects of currents
passing through the human body for
a frequency of 50 Hz. As you can see,
the effect depends on the root-meansquare-value of the current passing
through the body and the time it takes
to pass through. In accordance with the
effects, we can establish zones 1 (zone
with no perception) and 2 (perception
zone) as safe work zones. Therefore, in
terms of the protection of persons, earth
leakage protection systems must act on
those zones.
previous graph, which indicates that the
current is less dangerous.See the table
attached, in accordance with IEC 4792/ UNE 20-572-93, where a fault current
of, for example, 45 mA at 500 Hz has the
same effect as a fault current of 30 mA
at 50 Hz. In the case of receivers with
EMI filters, we can consider that these
inject a high-frequency earthed current
(>2 kHz) and a low frequency current.
The use of type A earth leakage protection systems is specified in these cases.
Frequency factor Ff
High-frequency current
Frequency f
When the frequency increases, the
curves are displaced to the right of the
Delay time
a. Perception threshold
b. "No-drop" threshold
c1 / c2 / c3. Fibrilation threshold
1. No perception
2. Perception
3. Reversible effects. Muscle tetany
4. Potentially irreversible effects
Sensitivity
Adjustments of I∆n
Therefore, we have a lower risk of triggers and less interruptions in the installation's supply than when the fault current is lower than I∆n.
This adjustment of I∆n allows us to concentrate more loads that incorporate
earthed capacitors within the same line
being protected. For example, in a computer installation: Each unit diverts a
current, Ileakage, of 2 mA through the EMI
filter capacitors included. At a sensitivity of (I∆n) 30 mA, you can install 7 computers with the electromechanical earth
leakage switches. However, if you use
CIRCUTOR's electronic switches you
can install a total of 12.
Fault earthed current Id
The following graphs show that with an
identical evolution of the fault earthed
current in the same installation, the behaviour of the earth leakage switch is
different, even when the sensitivity level
of I∆n is the same in both cases.
50 % I∆n
Time, t
100 % I∆n
85 % I∆n
Fault earthed current Id
The IEC 61008-1 Standard specifies
that earth leakage switches must be
triggered when the fault earthed current
is between 50% and 100% of the sensitivity value (I∆n) selected. This means
that the values that exceed 50% can
set off the earth leakage switch trigger. This type of case is common with
electromechanical switches. In the case
of electrical energy installations, these
have evolved in such a way that the adjustment of protection can cause great
problems, since it is too low. The electronic earth leakage protection systems
offered by CIRCUTOR determine the
trigger near 100 % of I∆n.
100 % I∆n
Time, t
P1/2-9
Industrial earth leakage protection
Inverse curve
Two types of curves are specified, as
shown on the following table of values:
}}Instantaneous
}}Selective
t
Id I∆n
Type
Instantaneous
Selective
I∆n (A)
All values
> 0,03
I∆n
0,3
0,5
2 . I∆n
0,15
0,2
5 . I∆n
0,04
0,15
500 A
0,04
0,15
Standardised operating time values (s)
The IEC 61008-1 Standard allows us to
incorporate a circuit opening delay for
the circuit being protected, which will
depend on the leakage current level.
Therefore, the greater the fault current,
the lower the delay.
The application of these curves to our
earth leakage systems can be used to
increase the continuity in the installation's power supply and avoid unwanted
trips.
Maximum
Monitoring protection elements
The leakage current value must be
available at all times in many applications. This information is quite useful for
the installation's preventive and corrective maintenance tasks, since we can
act before triggers are set off.
For example, if the insulation degree of
a machine is reduced, the earth leakage
current increases, and since we have
the said information, we can implement
the appropriate corrective actions to
avoid the trigger from being set off.
The idea is to integrate the earth leakage currents in the installation's energy
control system, thus controlling an additional quantity.
Depending on the type of product, the
information can be presented as follows:
}}In the earth leakage relay, through
the display.
}}Through the RS-485 communications system.
}}With an auxiliary measurement unit.
In addition, records and logs of the insulation behaviour of the installation can
be taken.
Remote control and reset
In the case of earth leakage protection
systems in installations that require a
continuous supply of energy, with no
maintenance staff present, the remote
control and reset (or self-reclosing)
functions are very useful.
P1/2-10
Remote control functions can be carried
out through communications systems
(RS-485, Ethernet, etc.), using the PowerStudio Scada software. This function
can control the status of protection systems and perform a set of actions through
a computer and communications systems.
Industrial earth leakage protection
Earth leakage protection systems with self-reclosing
Given the current efficient personal and
material protection requirements and
obligations, and the complexity of some
installations that require the continuous
supply of electrical energy with the use
of overload and earth leakage protection
systems, CIRCUTOR has developed a
wide range of units that make safety and
service continuity compatible.
Self-reclosing systems are an ideal solution for installations that need a constant
supply of electrical energy, without the
need for the usual maintenance staff:
}}Traffic lights
}}Lighting of tunnels
}}ATMs
}}Cable television
}}Etc.
The type of protection element installed,
those that can be reclosed and under
which reclosing conditions must be known
by all self-reclosing systems.
Self-reclosing systems act in accordance with the following:
}}Earth leakage current (earth leakage)
}}Rural installations
}}Refrigeration chambers
}}Public lighting
}}Mobile telephony repeaters
}}Earth leakage current (earth leakage) +
overload and short-circuit (circuit breaker).
Elements that form an self-reclosing system
TRANSFORMER
RELAY
Treatment of the signal,
measurement and trigger
CIRCUIT BREAKER
monitored
Earth leakage transformer
Circuit breaker
The earth leakage transformer detects
the earth leakage. It can be built-in on a
relay or as an external element.
The circuit breaker always interrupts the
flow of power, which supports the power
in the line protected and is an external
element of the relay.
Self-reclosing relay
Self-reclosing relays add a series of
performance features (self-reclosing,
thermal or overload protection) to the
proven reliability and security of non-reclosing earth leakage protection relays.
The circuit breakers that can be associated to self-reclosing relays are as
follows:
}}Motorized circuit breaker (MT)
}}Contact circuit breaker with remote
It performs the following functions:
control (MCB), with a dual circuit breaker and contact function (the function of
the contact is bistable).
}}Detection of anomalies (earth leakage or overload) through the signal generated by the transducer.
Features of the circuit breaker:
}}They analyse the anomaly to see if it
must generate an alarm, depending on
the parameters programmed.
}}They also act on power elements,
which perform the grid load connectiondisconnection tasks.
}}Nominal current (in contacts)
}}Nominal current and thermal protec-
tion curve (in circuit breakers)
}}Features of the control inputs of the
operational element
}}Circuit-breaking power
}}Auxiliary NO or NC signalling of the
circuit breaker's status
P1/2-11
Industrial earth leakage protection
Parameters related to self-reclosing relays
Relay status indicator
The indications are associated to the
type of protection, distinguishing between instantaneous triggers and interlockings. The indications are sent by the
relay (LED) and, optionally, by auxiliary
contacts.
Another type of visualisation, depending
on the relay, is the instantaneous trigger
value and the number of total reclosures.
Nominal trigger point of protections
ON position. This is when the reset timer
of the reclosing meter will be set off.
The RESET option starts the relay, resetting the reclosing meters.
Local (with the keys) and remote
test and reset
Self-reclosing earth leakage relays offer
the same performance as non-reclosing
relays. It enables the verification of the
correct operation of the relay with local
TEST and RESET functions, using the
keys on the relay, including remote functions with specific inputs.
Standard values:
}}Earth leakage protection 30 mA - 3 A
}}Overload protection 6 A - 63 A
Timer (delay)
Minimum time that the earth leakage
must last before setting off a relay trigger.
Standard values: 20 ms - 1s.
Relay power supply and tolerance
Self-reclosing relays need a permanent
form of auxiliary power supply in order to
manage the self-reclosing operations.
}}Standardised value: 230 Vac ± 15 %
}}Optional: 48, 110 or 400 Vac
Reclosing meter reset time.
To avoid the accumulation of triggers that
do not correspond to the same anomaly,
a reset time is defined for the reclosing meters, provided that the maximum
number of reclosures is not exceeded.
Example: The WRU-25 RA relay has a
maximum number of reclosures available before being pushed to its interlocking.
In installations with a transient earth leakage fault that lasts 50 seconds, the relay
is triggered 4 times and reclosed 3 times
(8 s + 16 s + 30 s). During the timing of
the third self-reclosing, the fault disappears, so that the relay will remain in the
P1/2-12
The RESET option resets the relay and
the reclosing meters.
Number of reclosures, distinguished by type and number of
self-reclosing
Each relay enables a maximum number
of reclosures before setting off the interlocking. The meter will be reset automatically if the maximum number of
reclosures is not exceeded within a preestablished period of time (reset time of
reclosing meters).
This number will be different, in accordance with the type of self-reclosing.
Output relay
}}Number of relays
}}With interlocking
}}NO or NC Output contact
Time between reclosures
Time the relay takes between the trigger
and the self-reclosing. It can be linear or
exponential.
Industrial earth leakage protection
Product selection table
Equipment
External toroidal
Internal toroidal
No. of outputs
Indications
Communications
In (A)
Page
RG1M
17
Type WG / WGC
LEDs
-
Depending
on the type
0.03 ... 5 A
19
-
1 + pre-alarm
Display
Only for type
RGU-10 C
0.03 ... 3 A
0.3 ... 30 A
21
-
4 + pre-alarm
Display
Only for type
CBS-4 C
0.03 ... 3 A
0.3 ... 30 A
23
-
8 + pre-alarm
Display
Yes
0.03 ... 6.3 A
0.3 ... 63 A
25
-
Depending
on the type
25 - 35 mm
1
LEDs
-
0.03 ... 3 A
28
WGBU / WGBU-90
-
35 ... 210 mm
1
LEDs
-
0.03 ... 3 A
30
WRN-22
-
22 mm
1
LEDs
-
0.01 A
0.03 A0.3 A
33
RGU-10 / RGU-10 C
1
WRU-10
RGE / RGE-R
-
Type WG / WGC
Type WG / WGC
CBS-4 / CBS-4 C
Type WG / WGC
CBS-8
Type WG-WGP
P1-13
Industrial earth leakage protection
P1-14
Industrial earth leakage protection
WG Series
WGC
Earth leakage transformres WGC Series
Dimensions WGC
Description
This new range presents a series of improvements above all in the
installation of equipment in switchboards.
Along with the usual installation fixtures, we add the possibility of
doing it with a DIN rail by means of an accessory, which would facilitate its installation.
The WGC series earth leakage transformers have a greater immunity to transitory type current peaks that usually cause differential
protection triggers.
The earth leakage transformers of the WGC Series have been designed
to work with the relays of the WGC Series. The sensitivity (trigger current) of the transformer-relay set is established by the associated relay.
References
Useful diameter (mm)
Weight (g)
In (A)
Type
Code
25 Ø
80
acc. relay
WGC 25
P10151
Type
A
B
C
WGC 25
25
60,5
64
D
WGC 35
35
70,5
75,5
55
92
98
38
130
60
35 Ø
120
acc. relay
WGC 35
P10152
55 Ø
160
acc. relay
WGC 55
P10153
WGC 55
80 Ø
300
acc. relay
WGC 80
P10154
WGC 80
80
124,5
110 Ø
420
acc. relay
WGC 110
P10155
WGC 110
110
163
168
84,5
WGC 140
140
201
206
110
140 Ø
760
acc. relay
WGC 140
P10156
P1-15
Industrial earth leakage protection
WG Series
WG
WG Series Earth Leakage transformers
Description
The earth leakage transformers of the WG Series have been designed
to work with the relays of the WG Series. The sensitivity (trigger current)
of the transformer-relay set is established by the associated relay.
WG Dimensions
References
Useful diameter
(mm)
Weight
(g)
In (A)
Type
Code
20 Ø
76
acc. relay
WGS-20
P10131
30 Ø
95
acc. relay
WGS-30
P10132
35 Ø
181
acc. relay
WG-35
P10111
70 Ø
274
acc. relay
WG-70
P10112
105 Ø
545
acc. relay
WG-105
P10113
Type
A
B
C
D
E
140 Ø
1 222
acc. relay
WG-140
P10114
WG-35
100
79
26
48,5
35
WG-70
130
110
32
66
70
WG-105
170
146
38
94
105
WG-140
220
196
48,5
123
140
WG-210
299
284
69
161
210
210 Ø
2 040
acc. relay
WG-210
P10115
70 x 175
2 400
acc. relay
WG-70x175
P10116
115 x 305
5 450
acc. relay
WG-115x305
P10117
150 x 350
7 400
acc. relay
WG-150x350
P10118
200 x 500
13 400
acc. relay
WG-200x500
P10119
WGS Dimensions
WGS-20
WGS-30
P1-16
Type
A
B
C
D
E
F
G
H
I
WG-70X175
70
175
225
85
22
46
261
176
7,5
WG-115X305
115
305
360
116
25
55
402
240
8
WG-150X350
150
350
415
140
28
55
460
285
8
Type
A
B
C
D
E
F
G
H
I
WG-200X500
200
500
-
140
-
62
585
285
-
Industrial earth leakage protection
WG Series
RG1M
Electronic earth leakage relay with external
transformer of the WG / WGC Series
Description
WG series electronic differential protection
relay for connection to external WG / WGS /
WGC series toroidal transformers
}}These are highly reliable electronic relays
with the option of a fixed or adjustable sensitivity and delay
}}Measurement using true root mean square (TRMS) value
}}DIN 46277 (En50022) Rail mounting
}}Reduced one module size.
}}LED status indication.
yyPower ON LED.
yyLeakage led ON. Tripped relay.
yyPower LED flashing and leakage LED
ON. Detection of a transformer continuity
fault
Application
The RG1M relays combined with the WG /
WGC transformer provides complete differential protection, both on single-phase and
three-phase lines.
Features
Protección
Class
A superimmunized
Measurement
True root mean square (TRMS)
Sensitivity
30 or 300 mA
Delay
20 ms
Earth leakage transformer
External WG / WGC Series
Test and Reset
With built-in buttons, T & R
Remote Control
External Test Option
Associated circuit breaker
Contactor or automatic circuit breaker using a coil
trigger
LED indicator
• Power supply voltage
• Leakage trigger
• Disconnection of external transformer
Circuit breaker control
Through a NO/NC switched relay, depending
on the connection with the circuit breaker
Features
Auxiliary power supply
230 Vac (± 20 %) 50 / 60 Hz
Output contacts
250 Vac, 6 A
Operating temperature
-10 ... +65 ºC
Construction features
Fixing
DIN Rail 46277 (EN 50022)
Dimensions
1 module
Weight
85 g
Degree of protection
IP 20 terminals
Standards
IEC 60947-2, IEC 60755, IEC 62020, IEC 61008
P1-17
Industrial earth leakage protection
WG Series
Dimensions
RG1M
64 mm
90 mm
45 mm
Electronic earth leakage relay with external
transformer of the WG Series
66 mm
72 mm
17.5 mm
R
‫ ‏‬eferences
Size
Attachment
In (A)
Delay
Type
Code
1 modules
DIN rail
0.03
0.02 s
RG1M-0.03
P12204
1 modules
DIN rail
0.3
0.02 s
RG1M-0.3
P12214
Connections
50/60 Hz
230 V±20%
50/60 Hz
230 V±20%
L1 L2 L3 N
5
6
5
6
RG1M
Test / Reset
230V;5A
3
4
1
2
CARGA
Disparo por BOBINA DE MÍNIMA
- Rearme manual.
P1-18
Type WG
8
1S11S2
7
Type WG
8
1S11S2
7
RG1M
Test / Reset
L1 L2 L3 N
230V;5A
3
4
1
2
CARGA
Disparo por BOBINA DE EMISIÓN
- Rearme manual.
Industrial earth leakage protection
WG Series
RGE
/ RGE-R
Electronic earth leakage relay with external
transformer of the WG / WGC Series
Description
Electronic earth leakage protection relay,
used to connect to the earth leakage transformers WG / WGC Series
}}These electronic relays offer a high reliability, with the option of a fixed or adjustable
sensitivity and delay
}}Type A relay with high frequency current
filtering and high immunity. Monitoring of the
true root mean square (TRMS)
}}Assembly on DIN rail 46277
}}Reduced size: 2 modules
}}LED indicators:
yyPermanently lit leak indicator
yyLED: Trigger relay
yyFlashing power LED and lit leak LED:
detection of faults in the transformer's continuity
yyFlashing leak LED indicator (only RGE-R
and RGE-R1): Leak with a value under the
value selected
yy1 flash every 2 s: 25 ... 50 % of the leakage current
yy1 flash every 1 s: 50 ... 75 %
yy2 flashes every 1 s: 75 ... <100 %
yyPermanently: 100 %
Application
Features
Protection
Class
A superimmunized
Measurement
True root mean square (TRMS)
Sensitivity
0.03 A / 0.3 A / 0.5 A / 0.03 ... 3
A (R1) / 0.03 ... 5 A (R)
Delay
0.02 / 0.02 ... 1 s (R1) / 0.02 ... 5 s (R)
Earth leakage transformer
External, TRANSFORMERS WG / WGC
Test and Reset
With built-in buttons, T & R
Remote Control
External Test Option
Associated circuit breaker
Contact or Circuit breaker + trigger coil
LED indicator
• Power supply voltage
• Trip due to leakageDisconnection of the
external transformerPre-alarm (R-R1)
Display View
-
Remote signaling
-
Circuit breaker control
Through an NO/NC switched relay, depending
on the connection with the circuit breaker
Features
Auxiliary power supply
230 Vac (± 20 %) 50 / 60 Hz
(other values on demand)
Output contacts
250 Vac, 6 A
Operating temperature
-10 ... +50 ºC
Construction features
Fixing
DIN Rail 46277 (EN 50022)
Dimensions
2 modules
Weight
163 g
Degree of protection
IP 20 Terminals, IP 41 back panel
Standards
IEC 664, VDE 0110, IEC 801, UL 94, IEC 348, IEC 571-1, EN 61000-6-3, 61000-6-1, 61010-1
The relays of the RGE series and the transformer of the WG / WGC series enable a full
earth leakage protection for both single and
three-phase lines. They guarantee maximum
security and continuity of the electrical service, avoiding unwanted tripping.
P1-19
Industrial earth leakage protection
WG Series
Dimensions
RGE / RGE-R
Electronic earth leakage relay with external
transformer of the WG Series
References
Size
Fixing
In (A)
Delay
Type
Code
2 modules
DIN rail
0,03
0.02 s
RGE-0.03
P12201
2 modules
DIN rail
0,3
0.02 s
RGE-0.3
P12211
2 modules
DIN rail
0,03 ... 3
0.02 ... 1 s
RGE-R1
P12231
2 modules
DIN rail
0,03 ... 5
0.02 ... 5 s
RGE-R
P12232
Connections
Shunt coil tripping
Undervoltage coil tripping
EXTERNAL RESET
SHUNT
COIL
EXTERNAL RESET
UNDERVOLTAGE
COIL
SHUNT
COIL
LOAD
P1-20
EXTERNAL RESET
LOAD
EXTERNAL RESET
UNDERVOLTAGE
COIL
LOAD
LOAD
Industrial earth leakage protection
WG Series
RGU-10
/ RGU-10 C
Electronic earth leakage relay with external
transformer of the WG / WGC Series
Description
Features
Electronic earth leakage protection relay,
used to connect to the earth leakage transformers WG / WGC Series
Protection
}}Superimmunized Type A relay with high
frequency current filtering and high immunity
}}
Monitoring of the true root mean square
(TRMS)
}}
Display of data on the screenTwo independent programmable outputs (main and
pre-alarm)
}}
External input for remote control functions
( 230 Vac).
Class
A superimmunized
Measurement
True root mean square (TRMS)
Sensitivity
0.03 ... 3 A
0.03 ... 30 A
(PROGRAMMING)
Delay
Time defined: 0,02 ... 10 s
Inverse curve: Instantaneous or selective
Earth leakage transformer
External, TRANSFORMERS WG / WGC
Test and Reset
With built-in buttons, T & R
Remote Control
External Test Option
Associated circuit breaker
Contact or Circuit breaker + trigger coil
LED indicator
• Power supply voltage
• Trip due to leakage
• Disconnection of the external transformer
• Pre-alarm
Display View
• Current trip (red display when triggered)
• Programming parameters
• Instantaneous leakage current
• Disconnection of the external transformer
Remote signaling
• Pre-alarm
• Display of parameters with RS-485
communications (RGU-10 C)
Circuit breaker control
Through an NO/NC switched relay, depending
on the connection with the circuit breaker
Application
The RGU-10 relays associated to the transformers of the WG / WGC series allow an
smart earth leakage protection. Their design
features guarantee maximum security and
continuity of the electrical service, avoiding
unwanted tripping.
Features
Showing the value of the leak instantaneously on the display with the pre-alarm indications provides the information about the
state of lines being protected, thus allowing
the implementation of an adequate preventive maintenance approach.
In addition, version RGU-10 C with RS-485
communications is used with the Power Studio software, which allows the centralised
supervision of the system in real time, with a
record log that can be analysed later on.
Auxiliary power supply
230 Vac (± 20 %) 50 / 60 Hz
(other values on demand)
Output contacts
250 Vac, 6 A
Operating temperature
-10 ... +50 ºC
Construction features
Fixing
DIN Rail 46277 (EN 50022)
Dimensions
3 modules
Weight
236 g
Degree of protection
IP 20 Terminals, IP 41 back panel
Standards
IEC 61008-1, IEC 755, IEC 255-5
P1-21
Industrial earth leakage protection
WG Series
Dimensions
RGU-10 / RGU-10 C
Electronic earth leakage relay with external
transformer of the WG / WGC Series
References
Size
Communications
In (A)
Delay
Type
Code
3 modules
-
0.03 ... 3 A
0.03 ... 30 A
(PROGRAMMING)
0.02...10 s, INS, SEL
RGU-10
P11941
3 modules
RS-485
0.03 ... 3 A
0.03 ... 30 A
(PROGRAMMING)
0.02...10 s, INS, SEL
RGU-10 C
P11944
Connections
Shunt coil
P1-22
Undervoltage coil
Industrial earth leakage protection
WG Series
CBS-4
/ CBS-4 C
Earth leakage monitoring and signaling unit
of the external transformer of the WG / WGC
Series
Description
}}Unit equivalent to 4 earth leakage protection networks. 4 independent programmable
relays available
}}Four inputs to connect the external toroidal
transformers of the WG
}}Superimmunized Type A relay with high
frequency current filtering and high immunity.
Monitoring in true root mean square (TRMS)
}}Reduced size, with 3 modules
}}5 independent programmable outputs
(4 earth leakage trip relays and 1 pre-alarm
trip).
Application
Features
Protection
No. of protections
4
Class
A superimmunized
Measurement
True root mean square (TRMS)
Sensitivity
0.03 A ... 30 A
Delay
Time defined: 0,02 ... 10 s
Inverse curve: instantaneous or selective
Earth leakage transformer
External, TRANSFORMERS WG/WGP
Test and Reset
With built-in buttons, T & R
Associated circuit breaker
Contact or Circuit breaker + trigger coil
LED indicator
• Power supply voltage
• Leakage trip
• Pre-alarm
• Interlocked earth leakage self-reclosing
Display View
• Current trip (red display when triggered)
• Instantaneous leak level indicator in each channel
• Parameter programming
• State of the self-reclosing- Disconnected external
trans. indicator- Automatic self-reclosing enabled
The CBS-4 earth leakage unit associated to
the transformers of the WG / WGC Series allows an smart earth leakage protection. Its
design features guarantee maximum security
and continuity of the electrical service, avoiding unwanted tripping.
Features
Fixing
DIN Rail 46277 (EN 50022)
Showing the value of the leak instantaneously on the display with the pre-alarm indications provides the information about the
state of lines being protected, thus allowing
the implementation of an adequate preventive maintenance approach.
Dimensions
3 modules
Weight
236 g
Degree of protection
IP 20 Terminals, IP 41 back panel
Auxiliary power supply
230 Vac (± 20 %) 50 ... 60 Hz
Output contacts
250 Vac, 5 A
Operating temperature
-10 ... +50 ºC
Construction features
Standards
IEC 664, VDE 0110, IEC 801, UL 94, IEC 348, IEC 571-1, EN 61000-6-3, 61000-6-1, 61010-1
In addition, version CBS-4 C with RS-485
communications is used with the PowerStudio software, which allows the centralised
supervision of the system in real time, with
a record log that can be analysed later on.
P1-23
Industrial earth leakage protection
WG Series
Dimensions
CBS-4 / CBS-4 C
Earth leakage monitoring and signaling unit
of the external transformer of the WG / WGC
Series
References
Size
Communications
No. of Relays
In (A)
Type
Code
3 modules
-
4
0.03 ... 30 s
CBS-4
P12711
3 modules
RS-485
4
0.03 ... 30 s
CBS-4 C
P12712
Connections
P1-24
Industrial earth leakage protection
WG Series
CBS-8
Earth leakage monitoring and signaling unit
of the external transformer of the WG / WGP /
WGC Series
Description
}}Unit equivalent to 8 earth leakage protection networks. 8 independent programmable
relays available
}}8 inputs to connect the external toroidal
transformers of the WG / WGP / WGC
}}Superimmunized Type A relay with high
frequency current filtering and high immunity.
Monitoring in true root mean square (TRMS)
}}Size adapted for 8 modules
}}9 independent programmable outputs
(8 earth leakage trip relays and 1 pre-alarm
trip).
Features
Protection
No. of protections
8
Class
A superimmunized
Measurement
True root mean square (TRMS)
Sensitivity
0.03 A ... 6.3 A external transformers WG / WGS / WGC
0.03 A ... 63 A external transformers WGP/WGSP
Delay
Time defined: 0,02 ... 10 s
Inverse curve: instantaneous or selective
Earth leakage transformer
External, TRANSFORMERS WG / WGP / WGC
Test and Reset
With built-in buttons, T & R
Associated circuit breaker
Contact or Circuit breaker + trigger coil
Self-reclosing
No. of reclosures
0 Programming option ... 10
Time between reclosures
0 Programming option ... 900 s
Partial counter reset time
Double the reclosing time
The CBS-8 earth leakage station associated
to the transformers of the WG / WGP / WGC
Series allows an smart earth leakage protection. Its design features guarantee maximum
security and continuity of the electrical service, avoiding unwanted tripping.
LED indicator
• Power supply voltage
• Leakage trip
• Pre-alarm
• Interlocked earth leakage reclosing
• Automatic self-reclosing enabled
Display View
• Instantaneous leak level indicator in each channel
• Parameter programming
• Self-reclosing status
Auxiliary power supply
230 Vac (± 20 %) 50 ... 60 Hz
Showing the value of the leak instantaneously on the display with the pre-alarm indications provides the information about the
state of lines being protected, thus allowing
the implementation of an adequate preventive maintenance approach.
Output contacts
250 Vac, 5 A
Operating temperature
-10 ... +50 ºC
Application
In addition, RS-485 communications are
used with the Power Studio software, which
allows the centralised supervision of the system in real time, with a record log that can be
analysed later on.
Features
Construction features
Fixing
DIN Rail 46277 (EN 50022)
Dimensions
8 modules
Weight
609 g
Degree of protection
IP 20 Terminals, IP 41 back panel
Standards
IEC 664, VDE 0110, IEC 801, UL 94, IEC 348, IEC 571-1, EN 61000-6-3, 61000-6-1, 61010-1
P1-25
Industrial earth leakage protection
WG Series
Dimensions
CBS-8
45
110
Earth leakage monitoring and signaling unit
of the external transformer of the WG / WGC
Series
70
140
CBS-8
References
Size
Communications
No. of Relays
In (A)
Type
Code
8 modules
RS-485
8
0.03 ... 63 A
CBS-8 (*)
P12811
(*) In the case of the 0.3 ... 63 A scale, use earth leakage transformers of the WGP / WGSP
Connections
P1-26
Industrial earth leakage protection
WG Series
WGP
Earth leakage Transformers of the WGP
Series (only for CBS-8)
Description
The earth leakage transformers of the WGP Series have been designed to work only with the CBS-8 relay unit and a sensitivity of 0.3 ...
63 A. These transformers have a 1/5000 ratio.
WGP Dimensions
References
Useful diameter
(mm)
Weight (g)
In (A)
Type
Code
20 Ø
76
0,3 ... 63
WGSP-20
P10141
30 Ø
95
0,3 ... 63
WGSP-30
P10142
35 Ø
181
0,3 ... 63
WGP-35
P10121
70 Ø
274
0,3 ... 63
WGP-70
P10122
105 Ø
545
0,3 ... 63
WGP-105
P10123
140 Ø
1 222
0,3 ... 63
WGP-140
P10124
210 Ø
2 040
0,3 ... 63
WGP-210
P10125
70 x 175
2 400
0,3 ... 63
WGP-70x175
P10126
Type
A
B
C
D
E
P10127
WGP-35
100
79
26
48,5
35
WGP-70
130
110
32
66
70
WGP-105
170
146
38
94
105
WGP-140
220
196
48,5
123
140
WGP-210
299
284
69
161
210
115 x 305
150 x 350
5 450
7 400
0,3 ... 63
0,3 ... 63
WGP-115x305
WGP-150x350
WGSP Dimensions
P10128
WGSP-20
WGSP-30
Type
A
B
C
D
E
F
G
H
I
WGP-70X175
70
175
225
85
22
46
261
176
7,5
WGP-115X305
115
305
360
116
25
55
402
240
8
WGP-150X350
150
350
415
140
28
55
460
285
8
P1-27
Industrial earth leakage protection
WRU-10
Relé diferencial con transformador
incorporado con display (tipo A)
Description
Electronic differential protection relay with builtin 28 mm transformer, constituting one unit.
}}Type A high-insulation, with high-frequency
current filter and high insulation. Monitoring
using true root mean square.
}}Display with LEDs and display:
- differential protection settings.
- protection trigger current.
- protection status messages, etc.
}}Units with three programmable output contact relays, one switched and two simple. The
main relay is for the protection provided by the
contact or trigger relay of the automatic switch
while the two others are for the pre-alarm.
}}It also has a voltage input for external triggering and re-arming.
}}Assembly on DIN Rail 46277 (EN 50022)
}}Reduced three-module size.
}}Connection by pluggable terminals.
Application
Los relés WRU-10 permiten una protección
difencial inteligente. Por sus características de
diseño aseguran la máxima seguridad t continuidad en el servicio eléctrico, evitándose disparos intempestivos.
El poder visualizar el valor de fuga instantánea
en el display, conjuntamente con las indicaciones de prealarma, permite tener información
del estado de las líneas que protegen, y realizar un buen mantenimiento preventivo.
P1-28
Features
Protección
Clase
A superinmunizada
Medida
Verdadero valor eficaz, TRMS
Sensibilidad PROGRAMABLE
0,03 ... 3 A, ampliable hasta 30 A por SETUP
Retardo PROGRAMABLE
Tiempo definido: 0,02 ...1 s, ampliable
hasta 10s por SETUP. Curva inversa:
INStantánea / SELectiva. (IEC 60947-2)
Test y Reset
Mediante pulsadores T y R
Control Remoto
Posibilidad de TEST externo, disparo por entrada libre
de tensión.
Elemento de corte asociado
Contactor o interruptor automático con bobina de disparo
Indicación por LED/DISPLAY
Control de elemento de corte
- Tensión de alimentación
- Disparo por fuga
- Prealarma
- Parámetros de protección
- Lectura corriente de fuga/
disparo.
- Estados de TEST y disparo
externo.
Relé de contacto conmutado NA/NC según elemento
de corte
Características eléctricas
Alimentación auxiliar
230 V c.a. (± 30 %) 50 / 60 Hz
Contactos salida disparo/prealarma
250 V c.a., 5 A / 230 V c.a., 250 mA
Temperatura de uso
-20 ...+70 ºC
Características mecánicas
Fijación
Carril DIN 46722 (EN 50022)
Dimensiones
3 módulos
Peso
275 g
Grado de protección
IP 20, transcuadro IP 41
Normas
IEC 60947-2, IEC 60755, IEC 62020, IEC 61008
Industrial earth leakage protection
WRU-10
Dimensions
Differential relay with built-in transformer and
display (type A)
75
85
45
73
44
52,5
10
27,25
22,75
n28
R
‫ ‏‬eferences
Size
Net section (mm)
In (A)
Delay
Type
3 modules
28 ∅
0.03 ... 3 A extendible
to 30 A
0.02 ... 1 s extendible to 10s Curve
(Inverse): INS/SEL
WRU-25
Connections
WRU-10
Code
P2
WRU-10
P1-29
Industrial earth leakage protection
WRU
Earth leakage relay with built-in transformer
(type A)
Description
Electronic earth leakage protection relay with
built-in transformer, with a diameter of 25 or
35 mm∅ , depending on the type, creating a
single set.
}}Type A relay with high frequency current
filtering and high immunity. Monitoring in true
root mean square.
}}The sensitivity can be adjusted to 0.03 ... 3 A
}}The delay in the trigger can be adjusted
to 0.02 ... 1 s
}}LED indicator of the leak level (% sensitivity):
yy1 flash every 2 s: between 25 and 50 %
yy1 flash every 1 s: between 50 and 75 %
yy1 flash every 0.5 s: between 75 and 90 %
}}Adjustable to the DIN profile 46277 (EN
50022)
Application
Features
Protection
Class
A superimmunized
Measurement
True root mean square (TRMS)
Sensitivity
0.03 ... 3 A
Delay
0.02 ... 1 s
Earth leakage transformer
Internal
Test and Reset
With built-in buttons, T & R
Remote Control (inputs)
External test
Associated circuit breaker
Contact or Circuit breaker + trigger coil
Relay signaling
• Power supply voltage
• Trip due to leakage
• Pre-alarm
Remote signaling (outputs)
Leak control signal (proportional alternating
voltage) (only in WRU-25)
Circuit breaker control
Through an NO/NC switched relay, depending
on the connection with the circuit breaker
Features
Auxiliary power supply
230 Vac (± 20 %) 50 / 60 Hz
Output contacts
250 Vac, 6 A
Operating temperature
-10 ... +50 ºC
Construction features
The WRU Series allows a reliable and immunised form of earth leakage protection,
saving installation time. Its assembly is very
simple, offering an adequate solution for all
types of single and three-phase installations,
since it offers compact earth leakage protection, with the optional adjustment of the sensitivity and time.
P1-30
Fixing
DIN rail
Dimensions
4 modules (WRU-25), 6 modules (WRU-35)
Weight
228 g (WRU-25), 403 g (WRU-35)
Degree of protection
IP 20 Terminals, IP 41 back panel
Standards
IEC 1008, IEC 255-5, UNE 801-2, UNE 801-3, UNE 801-4, UNE 60730-1
Industrial earth leakage protection
WRU
Dimensions
Earth leakage relay with built-in transformer
(type A)
WRU-25
WRU-35
References
Size
Useful diameter
(mm)
In (A)
Delay
Type
Code
4 modules
25
0,03 ... 3
0.02 ... 1 s
WRU-25
P14011
6 modules
35
0,03 ... 3
0.02 ... 1 s
WRU-35
P14021
The delay is cancelled in all relays with a sensitivity adjustment of 0.03 A.
Connections
WRU-25
2
WRU-35
2
1
1
P1-31
Industrial earth leakage protection
WGBU
Transformer with built-in earth leakage relay
Description
The WGBU Series is a compact earth leakage protection system. It is composed of a
toroidal transformer with a built-in earth leakage relay.
}}Multi-range electronic relay
yyThe sensitivity can be adjusted to 0.03 ... 3 A
yyTrigger delay of 0.02 ... 1 ws, adjustable
}}Type A relay with high frequency current
filtering and high immunity. Monitoring in true
root mean square (TRMS).
}}LED indicators:
yyGrid connection LED
yyPre-alarm and trigger LED: 1 flash every
2 s, leak between 25 and 50 % of the sensitivity selected; 1 flash every 1 s, leak between 50 and 75 % of the sensitivity selected; 1 flash every 0.5 s, leak exceeding 75
% of the sensitivity selected; permanently
lit, trigger of the earth leakage protection.
Application
The WGBU series offers a reliable earth
leakage protection, with simpler cabling and
savings in the assembly time. In addition, installation is very simple, thanks to its compact
dimensions.
P1-32
Features
Earth leakage
Protection
Class
A superimmunized
Measurement
True root mean square (TRMS)
Sensitivity
0.03 ... 3 A
Delay
0.02 ... 1 s
Earth leakage transformer
Built-in transformers of the WG
Test and Reset
With built-in buttons, T & R
Associated circuit breaker
Contact or Circuit breaker + trigger coil
LED indicator
• Power supply voltage
• Trip due to leakage
• Pre-alarm
Remote Control (inputs)
External Test Option
Circuit breaker control
Through an NO/NC switched relay, depending
on the connection with the circuit breaker
Features
Auxiliary power supply
230 Vac (± 20 %) 50 / 60 Hz
Output contacts
250 Vac, 6 A
Operating temperature
-10 ... +50 ºC
Construction features
Fixing
DIN Panel / Rail
Dimensions
Depending on the type
Weight
Depending on the type
Degree of protection
IP 20 Terminals, IP 41 back panel
Standards
IEC 61008-1, IEC 755, IEC 255-5
Industrial earth leakage protection
WGBU
Dimensions
Transformer with built-in earth leakage relay
WGBU
WGBU-90
Type
A1
A2
B
C
D
E
WGBU-35 (A1) / WGBU-90-35 (A2)
166
100
79
26
48,5
35
WGBU-70 (A1) / WGBU-90-70 (A2)
196
130
110
332
66
70
WGBU-105 (A1) / WGBU-90-105 (A2)
236
170
146
38
94
105
WGBU-140 (A1) / WGBU-90-140 (A2)
286
220
196
48,5
123
140
WGBU-210 (A1) / WGBU-90-210 (A2)
365
299
284
69
161
210
References
Weight (g)
Useful diameter
(mm)
In (A)
Delay (s)
Type
Code
380
35 Ø
0,03 ... 3
0,02 ... 1
WGBU-35
P16011
474
70 Ø
0,03 ... 3
0,02 ... 1
WGBU-70
P16012
744
105 Ø
0,03 ... 3
0,02 ... 1
WGBU-105
P16013
1422
140 Ø
0,03 ... 3
0,02 ... 1
WGBU-140
P16014
2240
210 Ø
0,03 ... 3
0,02 ... 1
WGBU-210
P16015
380
35 Ø
0,03 ... 3
0,02 ... 1
WGBU-90-35
P16021
474
70 Ø
0,03 ... 3
0,02 ... 1
WGBU-90-70
P16022
744
105 Ø
0,03 ... 3
0,02 ... 1
WGBU-90-105
P16023
1422
140 Ø
0,03 ... 3
0,02 ... 1
WGBU-90-140
P16024
2240
210 Ø
0,03 ... 3
0,02 ... 1
WGBU-90-210
P16025
The delay is cancelled in all relays with a sensitivity adjustment of 0.03 A.
P1-33
Industrial earth leakage protection
WGBU
Transformer with built-in earth leakage relay
Undervoltage coil
P1-34
Connections
Shunt coil
Industrial earth leakage protection
WRN-22
Earth leakage relay with built-in transformer
Description
The WRN-22 relay is an earth leakage relay
with a built-in earth leakage transformer, with
a diameter Ø 22 mm
}}DIN 46277 Symmetrical profile coupling
(EN 50022)
}}The leakage is detected by means of
sampling the earth leakage intensity and calculating its true root mean square (TRMS)
}}Detection of the presence of voltage with
LEDs
}}TEST button.
Application
The WRN-22 earth leakage protection is a
very interesting solution for small-scale installations with reduced space.
Features
Protection
Class
A
Measurement
True root mean square (TRMS)
Sensitivity
0,01 A / 0,03 A / 0,30 A (depending on the type)
Delay
0.02 s
Earth leakage transformer
Internal
Test
With built-in button, TEST
Associated circuit breaker
Circuit breaker + trigger coil
Relay signaling
• Power supply voltage
• Leakage trigger
Remote signaling (outputs)
-
Remote Control (inputs)
External test
Circuit breaker control
Voltage 230 Vac
Features
Auxiliary power supply
230 Vac (± 20 %) 50 / 60 Hz
Output contacts
-
Operating temperature
-10 ... +50 ºC
Construction features
Fixing
DIN rail
Dimensions
3 modules
Weight
146 g
Degree of protection
IP 20 Terminals, IP 41 back panel
Standards
IEC 1008, IEC 255-5, UNE 801-2, UNE 801-3, UNE 801-4, UNE 60730-1
P1-35
Industrial earth leakage protection
WRN-22
Dimensions
Earth leakage relay with built-in transformer
References
Size
In (A)
Delay (s)
Type
Code
3 modules
22
0,03
0,02
WRN-22-0.03
P14211
3 modules
22
0,3
0,02
WRN-22-0.3
P14212
3 modules
22
0,01
0,02
WRN-22-0.01
P14214
Connections
P1-36
Useful diameter
(mm)
Industrial earth leakage protection
Relation between products and accessories
Adaptor panel
PA-TC/WG
Adaptor for 72 x 72 panel
Accessory for assembly on DIN rail
P19915
WG
P19914
TT-210
--

only for WG-35 up to WG-70

WGP
P19913
TT-140
--

only for WGP-35 up to WGP-70

RGU-10
TT-105

--
--
CBS
P19912

only CBS-4
--
--
WN
P19911
TT-70
--

only for WGC-25 up to WGC-55

RN-10
P19921
Core balance shield tube
TT-35

--
--
WGBU
M5ZZF1
TT
--
--

P1-37
Industrial earth leakage protection
P1-38