Download SPX 3 -V - Legrandservices

3
SPX -V
SPX and
fuse carriers for blade
type fuses
01/2016
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Introduction
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Where?
Fuse switches are mostly used as a
protections of outgoings both in main and
secondary switchboards
Most typical type of loads protected by fuse switches:
- cables
- motors (protection against short-circuit)
- semiconductors (UPS batteries protection or telecom power
supplies)
- additional protection of SPD's
- protection of capacitors in capacitors banks
- protection of solar power supplies
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When?
When could it be useful to evaluate a fuses
solution instead of an MCCB one?
- In cases of very low price compared to MCCBs (half or even
one third of MCCB price)
and
- In particular technical parameters needs (ability to limit
efficiently high short-circuit currents up to 200-300 kA
good protection for cables)
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International standards
International standard that regulates fuses and fuse holders is
IEC 60947 – 3
Switches, disconnectors, switch-disconnectors and fuse-combination
units
It’s mandatory to pass withstand testing with x1.6 rated current over a period of
one hour
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Benefits offered by Current-Limiting Fuses
High interrupt ratings
Modern current-limiting fuses have high interrupting ratings at no extra cost.
Whether for the initial installation or system updates, a fusible system can
maintain a sufficient interrupting rating. This helps with achieving high
assembly short-circuit current ratings
High SCCR
High assembly short-circuit current ratings can be achieved
Rejection Features
Current-limiting fuses have rejection features which, when used with rejection
fuse clips, assure replacement with a device of the same voltage rating and
equal or greater interrupting rating. In addition, rejection features restrict the
fuses used for replacement to ones of the same class or type.
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Benefits offered by Current-Limiting Fuses
Flexibility
Increased flexibility in panel use and installation. Valuable time that was spent
gathering information for proper application is drastically reduced with fuses
since:
• Fuses can be installed in systems with available fault currents up
to 200kA or 300kA covering the majority of installations that exist.
• Fuses can handle line-to-ground fault currents up to their marked
interrupting rating.
• Fuses have a straight voltage rating instead of a slash voltage rating. A
device with a slash voltage rating is limited to installation in ONLY a
solidly grounded wye type system. Fuses can be installed in any type
of installation independent of the grounding scheme used.
Reliability
Fuses provide reliable protection throughout the life of the installation. After a
fault occurs, fuses are replaced with new factory calibrated fuses assuring the
same level of protection that existed previous to the fault.
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Benefits offered by Current-Limiting Fuses
No Venting
Fuses do not VENT. Therefore fuses will not affect other components in the
panel while clearing a fault. Additional guards or barriers are not required.
Component Protection via current limitation
Current limitation provides protection of circuit components for even the most
susceptible components such as equipment grounding conductors.
Selective Coordination
Achieving selective coordination is simple. Typically selective coordination can
be achieved between current-limiting fuses by simply maintaining a minimum
amp ratio between upstream and downstream fuses. This can aid in
diagnostics within the building electrical system or machine panel as only the
affected circuit is isolated. Selective coordination helps isolate faulted circuits
from the rest of the system and prevents unnecessary power loss to portions
of a building.
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A comparison: fuses vs circuit breakers
Both types of devices can meet the needed requirements, but
are circuit breakers or fuses best suited for a particular
application? Unfortunately, there is no simple answer to this
question—several other factors must be taken into account,
such as the level of protection provided, selective coordination
requirements, reliability, renewability and costs.
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Fuses speed/peak let through current
In case of large short circuit currents, no other protection
system is faster than the fuse. The consequence is that the
peak current is limited down to low values by the fuse.
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Fuses maintenance
Talking about fuses systems, it’s mandatory to distinguish
between
-Maintenance BEFORE a short circuit
and
-Maintenance AFTER a short circuit
BEFORE
No particular maintenace
is needed, because fuse
characteristics doesn’t
change
AFTER
Need to replace blown fuse
with a new one, with the
right safety precautions
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Fuses selective coordination
Selective coordination of overcurrent protective devices is required to ensure
that two somewhat mutually-exclusive goals are met—faults should be cleared
from the system as quickly as possible in order to minimize damage to
equipment, while the act of clearing the faults from the system should interrupt
power to as small a portion of the system as possible.
Selectivity between two fuses
operating under short-circuit
conditions exists when the total
clearing energy of the loadside
fuse is less than the melting
energy of the lineside fuse. The
following explains this process.
For a given overcurrent, a specific
fuse, under the same circumstances,
will open at a time within the fuse’s
time-current band.
Fuses have an inverse time-current
characteristic, which means the
greater the overcurrent, the faster
they interrupt
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Ground fault protection
Phase-to-ground faults are the most common form of electrical faults
(95% to 98%)
Ground faults are the most destructive type of electrical fault.
Fuses do NOT provide selective coordination
from most phase-to-ground faults
When ground-fault protection is required in a fusible system, the
disconnecting means (usually a switch, sometimes a contactor) must
be capable of tripping automatically, and external relaying and a zerosequence CT or set of residually-connected phase CTs must be
installed to detect the ground faults and send the trip signal to the
disconnecting means.
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Fuses motor protection
PROBLEM
Motor Starting Currents
When an AC motor is energized, a high
inrush current occurs. Typically, during the
initial half cycle, the inrush current is often
higher than 20 times the normal full load
current.
SOLUTION
Fast Acting Fuses
To offer overload protection, a protective
fuse, depending on its application and the
motor’s Service Factor (SF), should be
sized to prevent damages.
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Fuses motor protection: a drawback
The use of fuses has the potential to produce a severe unbalance
condition commonly referred to as single-phasing.
Single-phasing occurs when one phase in a three-phase motor circuit opens
but the other two phases remain in service. If the single-phasing occurs
upstream of the motor but at the same voltage level, then zero current flows
on the phase with the open fuse and elevated current levels flow in one or
both of the remaining phases.
To help guard against motor damage or failure due to single-phasing size
motor circuit fuses closer to the full-load current rating of the motor.
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Fuses semiconductor protection
One of the great advantages of a current-limiting overcurrent protective device
is that it can literally limit the peak magnitude of fault current that flows
through it by opening within the first half-cycle after fault initiation, before the
fault current has a chance to reach its peak value. Highly current-limiting fuses
for special applications, such as semiconductor fuses that are designed to
protect power electronic equipment, are also available.
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Fuses temperature derating
The higher the ambient temperature, the hotter the fuse will operate, and the
shorter its life will be. Conversely, operating at a lower temperature will
prolong fuse life. A fuse also runs hotter as the normal operating current
approaches or exceeds the rating of the selected fuse.
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Fuse carrier selection
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Fuse carriers: different approaches
SPX and SPX3-V
SPX-D
Blade type cartridge fuses
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Fuse holders: different approaches
Blade type cartridge fuses
 Cheapest approach
 Chance to mount poles one-aside-one
 Reliability difficulties  it’s not simple to substitute fuses:
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Fuse holders: different approaches
SPX-D
 very quick exchange between status (ON/OFF)
 simplified and robust load commutations
 status switching time indipendent by handling time
 DIN Rail mounting possibility
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Fuse holders: different approaches
SPX and SPX3-V
 Safe circuits interruption
 Handle to simplify fuses extraction
 Electrical test input via
 status switching time dipendent by handling time
 Busbar or plate (just SPX) mounting
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The offer
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A view on the offer
On a woldwide scenario, on many plants there could be the necessity
to protect devices with fuses.
Accomplishing this idea, Legrand has enhanced its fuse carriers
offers: with new SPX and SPX3-V devices it’s possible to protect
against short-circuits and overloads and to disconnect electric circuit
parts without load or at full load, maintaning switching selectivity.
To manage the power over the busbar system, a new MCCB adapter
has been designed to integrate our DPX3 1600 breakers.
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A view on the offer
SPX3-V
SPX
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3
SPX -V
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SPX3-V overview
. Vertical DIN 43 620 fuse carriers
. 185mm busbar mounting
. Standard IEC 60947-3
. Transparent window to check fuses
. Simultenous switching of all poles
. Wide range of fuses dimensions (from 00 to 3)
. Standard range of currents (from 160 A to 630 A)
. Chance to integrate DPX3 1600 MCCBs
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SPX3-V overview
Just 2 frames to allow
protection from 160A to 630A:
• Frame 1: 160A deep (ready for current
transformers accessorizing)
• Frame 2: same for 250A, 400A and
630A
Adapter for DPX3 1600, to allow
the managing of main power by
Legrand MCCB breakers, with
simple and quick mount on
185mm busbar system
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SPX3-V overview
• Hinged windows for time-saving
mounting and no need to dismantle
the fuse disconnector
• Easily accessible cable terminal
compartment Lid can be locked in the
open and closed positions
• Lid position monitoring with two
signalling switches per lid
• Easy switching thanks to ergonomic
operating handle
• Considerable scope for cable
connecting
• Outgoing feeder connections top or
bottom
•Lid can be lead-sealed
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SPX3-V overview: parking position
The lids of the 1-pole switching fuse
disconnectors can be unhinged.
A safe parking position is assured
from them being turned over and remounted.
The lid can no longer be inadvertently
closed.
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SPX3-V overview: cooling and ventilation
Ventilation ducts to
reduce overheating
Exhaust ducts for arching gases: no
more need of arching chambers
The lateral ducts of the SPX3-V produce
a kind of draw-off chimney which acts as a
cooling and ventilation system and pinpoints
the discharge of switching gases and heat.
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SPX3-V overview: busbar mounting
•Accessories for mounting on
drilled and undrilled bars (without
or with covers).
•Easy access to mounting screws.
No more need to dismantle the
product to install it
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SPX3-V overview: busbar mounting
Mounting with M8/M12 bolt connection
Three M8/M12 screws can be used to fix
the fuse disconnector onto either drilled or
punched busbars in the traditional method
after the added labour of drilling holes in
the busbars.
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SPX3-V overview: connection on terminals
Hinged connection compartment
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SPX3-V overview: connection on terminals
Multiple connection possibility and accessories
Box terminal
No additional terminal compartment cover is
needed when using a box terminal for the
connection.
Drawer-type method
The drawer-type method allows for a considerable
variation in connections. Connection can be flexibly
made with either nut or stud bolt – depending on
installation requirements. An additional terminal
housing cover is needed when using a cable lug for
the connection. These covers can be linked in series
to form longer covers.
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SPX3-V overview: current transformers
A complete range of integrated Current Transformers
• Currents from 80 to 600A
• Class accuracy 1
• No additional space required
• Simplified installation
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SPX3-V overview: adapter for Legrand MCCB
Adapters enable circuit breakers
to be quickly and easily mounted on
the 185 mm busbar system.
They can be used for both feed- and
tap-mounting of circuit breakers to the
busbar system.
Compatibility is given to all DPX3 1600
family circuit breakers
Space-saving integration of current transformers
can be accommodated on the adapter assembly
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SPX3-V range
DIN 43 620 NH in-line fuse switch disconnector, 3-pole switchable,
connection top/bottom
Reference
Nominal current
Fuse cartridge
size
6 058 00
160 A
00
6 058 01
250 A
1
6 058 02
400 A
2
6 058 03
630 A
3
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SPX3-V accessories
Cage terminals
Prism terminals for flexible copper rail conductor, flexible or rigid multicore
copper cables and aluminium cables
Reference
Conductor size
SPX3-V frame
6 058 65
10 – 95 mm2
160 A
6 058 66
70 – 240 mm2
250/400/630 A
6 058 67
120 – 400 mm2
250/400/630 A
6 058 65
6 058 66
6 058 67
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SPX3-V accessories
Signalling contact
To show the status of the cover: 5 A with 250Vac or 4 A with 30Vdc
Reference
SPX3-V frame
6 052 30
All frames
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SPX3-V accessories
185 mm busbar support
universal busbar support 185mm for drilled and undrilled flat busbars
Reference
Number of poles
6 058 80
3
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SPX3-V accessories
DPX3 1600 MCCB adapter
185 mm busbar system adapter for all DPX3 1600, connections with the circuit
breaker on top or on the bottom, screw connection to drilled busbars
Reference
Link
6 058 60
Top connection
6 058 61
Bottom connection
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SPX3-V accessories
Current transformers
accuracy class 1, secondary rated current 5A
Reference
Rated current
SPX3-V frame
6 058 70
80 A
160 A
6 058 71
150 A
160 A
6 058 73
150 A
250/400/630 A
6 058 74
200 A
250/400/630 A
6 058 75
250 A
250/400/630 A
6 058 76
400 A
250/400/630 A
6 058 77
600 A
250/400/630 A
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SPX
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SPX overview
. Horizontal fuse carriers
. Plate or busbar mounting
. Standard IEC 60947-3
. Transparent window to check fuses
. Simultenous switching of all poles
. Complete range of fuses dimensions (from 000 to 3)
. Complete range of currents (from 125 A to 630 A)
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SPX plate mounting
Reference
Nominal current
Fuse size
6 052 00
125 A
000
6 052 02
160 A
00
6 052 04
250 A
1
6 052 06
400 A
2
6 052 08
630 A
3
6 052 00
6 052 02
6 052 04
6 052 06
6 052 08
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SPX 60 mm busbar mounting
Reference
Nominal current
Fuse cartridge
size
6 052 01
125 A
000
6 052 03
160 A
00
6 052 05
250 A
1
6 052 07
400 A
2
6 052 09
630 A
3
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SPX accessories
Cage terminals
Prism terminals for copper and aluminium rail conductor, flexible or
rigid multicore copper cables and aluminium cables
6 052 22
Reference
Conductor size
SPX frame
6 052 22
16 – 70 mm2
160 A
6 052 23
70 – 150 mm2
250 A
6 052 24
120 – 240 mm2
400 A
6 052 25
150 – 300 mm2
630 A
6 052 23
6 052 24
6 052 25
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SPX accessories
Terminal shields
To fix at top or bottom of fuse carrier
Reference
SPX frame
6 052 49
160 A, plate mounting
6 052 31
160 A, busbar mounting
6 052 32
250 A, all mounting
6 052 33
400 A, all mounting
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SPX accessories
Signalling contact
To show the status of the cover: 5 A with 250Vac or 4 A with 30Vdc
Reference
SPX frame
6 052 30
All frames
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SPX accessories
60mm busbar support
Isolating support for 12, 15, 20, 25, 30 x 5, 10mm flat rigid copper
rails.
It can be installed in XL3 400/800/4000 distribution board using
vertical adaptors for uprights.
Reference
Number of poles
6 052 46
3
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SPX accessories
Covers
Reference
Details
6 051 64
Cover for 60 mm busbar system
6 051 65
Support for cover
6 051 64
6 051 65
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Annex A
Characteristics
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SPX3-V electrical characteristics
Size
Nominal current In
Type of current
Nominal voltage Un
Rated insulating voltage Ue
Rated impulse withstand voltage Uimp
Category of use EN 60947-3
400V
500V
SPX3-V 160A
00
SPX3-V 250A
1
160A
250A
AC (50/60 Hz)
AC (50/60 Hz)
690 V AC
690 V AC
1000V
1000V
8kV
8kV
AC 22 B
AC 23 B
AC 22 B
690V AC 21 B (125A)
500V
Conditional rated
short-circuit current (with gG/gL fuses) 690V
100kA
120kA
100kA
100kA
28W
24W
SPX3-V 400A
2
SPX3-V 630A
3
400A
630A
AC (50/60 Hz)
AC (50/60 Hz)
690 V AC
690 V AC
1000V
1000V
8kV
8kV
400V
500V
AC 23 B
AC 22 B
AC 23 B
AC 22 B
690V
AC 21 B
AC 21 B
120kA
100kA
80kA
80kA
60W
118W
Power dissipated by fuse carrier
(without fuse component)
Size
Nominal current In
Type of current
Nominal voltage Un
Rated insulating voltage Ue
Rated impulse withstand voltage Uimp
Category of use EN 60947-3
AC 21 B
Conditional rated
500V
short-circuit current (with gG/gL fuses) 690V
Power dissipated by fuse carrier
(without fuse component)
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SPX3-V connection characteristics
Size
00
Screw
terminal
Direct connection
terminals
M8
1 x 10 - 70 mm2
rm, sm, f, f+AE
-
70 mm2
Prism connection
1 x 95 mm2
rm, sm, f
1 x 35 - 150mm2 sm
1 x 50 - 185mm2 se
1 x 35 - 70mm2 rm
M12
1
2 x 185mm2 240mm2
1 x 50mm2 re
Md 32 - 40Nm
2 x 35 - 150mm2 sm
-
2
2 x 50 - 185mm se
2 x 35 - 70mm2 rm
2 x 35 - 50mm2 re
Md 18 - 24Nm
1 x 35 - 150mm2 sm
1 x 50 - 185mm2 se
1 x 35 - 70mm2 rm
M12
2
2 x 185mm2 240mm2
1 x 50mm2 re
Md 32 - 40Nm
2 x 35 - 150mm2 sm
-
2 x 50 - 185mm2 se
2 x 35 - 70mm2 rm
2 x 35 - 50mm2 re
Md 18 - 24Nm
1 x 35 - 150mm2 sm
1 x 50 - 185mm2 se
1 x 35 - 70mm2 rm
M12
3
2
2 x 185mm 240mm2
1 x 50mm2 re
Md 32 - 40Nm
2 x 35 - 150mm2 sm
2 x 50 - 185mm2 se
2 x 35 - 70mm2 rm
2 x 35 - 50mm2 re
Md 18 - 24Nm
-
sm: stranded sectored
se: solid sectored
rm: stranded round
re: solid round
f: flexible
AE: wire-end ferrules
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SPX electrical characteristics
Fuse carrier
Uninterrupted nominal current In (A)
Type of current
Nominal voltage Un (V)
SPX 000
125
SPX 00
160
SPX 1
250
AC / DC
SPX 2
400
SPX 3
630
690 V AC
440 V DC
690 V AC
440 V DC
690 V AC
440 V DC
800
690 V AC
440 V DC
690 V AC
440 V DC
Rated insulating voltage U e (V AC)
Rated impulse withstand
voltage Uimp (kV)
6
50 - 60
Nominal frequency (Hz)
Category of use at 415 V AC
AC-23B
AC-23B
AC-22B;
AC-23B (160A)
AC-23B
AC-23B
Category of use at 500 V AC
AC-22B
AC-23B (125A)
-
-
-
Category of use at 690 V AC
AC-21B
AC-21B
AC-21B
AC-22B
AC-22B
Category of use at 220 V DC
DC-21B;
DC-22B (160A)
DC-22B (100A)
-
-
-
Category of use at 440 V DC
DC-21B (80A); DC-21B(160A);
DC-22B (63A) DC-22B (125A)
DC-20B
DC-21B
DC-21B
45 W
60 W
Conditional rated short-circuit
current (gG fuses)
Power dissipated by fuse carrier
(without fuse component)
50 kA (690V)
10.5 W
17.7 W
26 W
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SPX connection characteristics
Size
Screw
terminal
000
-
00
1
2
3
M8
70 mm2
M10
120mm2
M10
240mm2
M12
2 x 185mm2
Clamp for
flat coonductor
2.5 - 50 mm2 f
1.5 - 50 mm2 f+AE
Prism connection
-
-
16 - 70 mm2
rm, sm, f, f + AE
-
35 - 150 mm2
rm, sm, f, f + AE
-
50 - 150/120 - 240 mm2
rm, sm, f, f + AE
-
150 - 300 mm2
rm, sm, f, f + AE
sm: stranded sectored
rm: stranded round
f: flexible
AE: wire-end ferrules
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Annex B
Dimensions
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SPX3-V dimensions
SPX3-V 00
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SPX3-V dimensions
SPX3-V 1/2/3
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SPX dimensions
SPX 000, plate mounting
SPX 00, plate mounting
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SPX dimensions
SPX 1/2/3, plate mounting
SPX 1
SPX 2
SPX 3
SPX 1
SPX 2
SPX 3
a
184
210
256
h
220
249
259
b
243
288
300
l
107
124
127.5
c
111.5
128
142.5
m
214.5
255
267
d
66
80
94.5
p
185
210
210
e
220
q
21.5
25
30
f
45.5
48
48
r
M10
M10
M12
g
84
92
98.5
x
57
65
81
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SPX dimensions
SPX 000, busbar mounting
SPX 00, busbar mounting
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SPX dimensions
SPX 1/2/3, busbar mounting
SPX 1
SPX 2
SPX 3
SPX 1
SPX 2
SPX 3
a
184
210
256
h
220
249
259
b
243
288
300
l
101
118
121.5
c
128.5
145
159.5
m
214.5
255
267
d
83
97
111.5
p
104.5
128
136.5
e
221
228
285
q
110.5
124.5
139
f
45.5
48
48
r
M10
M10
M12
g
90
98
104.5
x
57
65
81
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SPX dimensions (accessories)
Terminal shields
6 052 31 / 49
6 052 32
6 052 33
a
105
182.5
208.5
b
34
68
51.5
c
46
65
79
Signalling contact
d
22
33
43
x
33
57
65
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SPX dimensions (accessories)
Covers
60mm busbar support
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SPX3-V dimensions
185 mm busbar system support
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Annex C
Maximum fuses
power ratings
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Fuses selecting table for SPX3-V
DIN 43 620 Fuses ratings (A)
SPX3-V
00
1
2
3
In (A)
160
250
400
630
Pmax (W)
12
23
34
48
aM
125
250
400
500
gG
160
250
400
630
gR
32
63
125
160
aR
40
80
125
200
Please note: these values are for guidance only; check compliance of fuses maximum power
dissipation and rated current on corresponding datasheets
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Fuses selecting table for SPX
SPX
000
00
1
2
3
In (A)
125
160
250
400
630
Pmax (W)
9
12
23
34
48
DIN 43 620 Fuses ratings (A)
aM
gG
gR
aR
100
100
25
25
125
160
32
40
250
250
63
80
400
400
125
125
500
630
160
200
Please note: these values are for guidance only; check compliance of fuses maximum power
dissipation and rated current on corresponding datasheets
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Annex D
Diazed fuse holders
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Legrand diazed fuse holders range
Devices for the protection of the electric circuits from overcharge and short circuit using D0
fuses type. They have to be installed in 60mm BUS-BAR systems. The D0 fuses
have a high value of Icu and their maintenance and substitution is very fast and easy.
Reference
Description
6 051 50
Diazed base up to 25A
6 051 51
Diazed base up to 63A
6 051 60
42mm wide cover for diazed base up to 25A
6 051 62
84mm wide cover for diazed base up to 25A
6 051 61
57mm wide cover for diazed base up to 63A
6 051 63
114mm wide cover for diazed base up to 25A
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