Download 3.4 Metering Functions

AmpCom
Consultant
Specification
AmpCom - Networkable
Motor & Energy
Management System
(MC16)
Products and Brands
Motor Control & Drives
Version : 0.7
Technical Specification – [AmpCom – Networkable Motor &
Energy Management System]
Table of Contents
1
General ........................................................................................................................................ 3
1.1
1.2
Scope .................................................................................................................................. 3
Standards and Codes .......................................................................................................... 3
2
Abbreviations .............................................................................................................................. 4
3
AmpCom ...................................................................................................................................... 6
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
General ................................................................................................................................ 6
Construction ......................................................................................................................... 7
Protection Functions ............................................................................................................ 8
Metering Functions ............................................................................................................ 11
Control Functions ............................................................................................................... 11
Communications ................................................................................................................ 12
Statistical Data ................................................................................................................... 12
Diagnostic Historical Data .................................................................................................. 12
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1
General
1.1
Scope
This specification covers motor and energy management systems primarily being used for
protecting motors and various motor load applications. It also covers motor and energy related
diagnostics over Profibus-DP and Modbus Ethernet/TCP networks.
1.2
Standards and Codes
All motor & energy management systems shall comply with the construction and operational
requirements as stipulated by International standards and Australian/New Zealand standards.
In the event of conflicting requirements between standards and codes, the Australian requirements
shall apply.
Applicable standards include but are not limited to:
60947.1- Low-voltage switchgear and controlgear – General rules
AS/NZS
2007
AS/NZS
2004
60947.4.1- Low-voltage switchgear and controlgear – Contactors and motor-starters –
Electromechanical contactors and motor-starters
AS/NZS
2004
60947.5.1- Low voltage switchgear and controlgear – Control circuit devices and
switching elements – electromechanical control circuit devices
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2
Abbreviations
The following abbreviations are used throughout this specification:
CPU
Central Processing Unit
SPST
Single Pole Single Throw
N.O.
Normally Open
AC-1
Utilisation Category of Control for Non Inductive or Slightly Inductive
loads, resistance furnaces & VSDs according to AS/NZS 60947.5.12004
AC-15
Utilisation Category of Control for A.C. electromagnetic loads according
to AS/NZS 60947.5.1-2004
DC-12
Utilisation Category of Control for Control of resistive and solid-state
loads according to AS/NZS 60947.5.1-2004
DC-13
Utilisation Category for Control of D.C. electromagnets according to
AS/NZS 60947.5.2-2004
RTD
Resistance Temperature Detector
PTC
Positive Temperature Coeffecient
AC
Alternating Current
V
Volts
DC
Direct Current
I/O
Inputs and Outputs
mA
Milli Amperes
LED
Light-Emitting Diode
Hz
Hertz
°C
Degrees Centigrade
IP20
International Protection Rating according to AS/NZS 60529-2004 –
Solid particle protection >12.5mm (fingers or similar objects)
IP65
International Protection Rating according to AS/NZS 60529-2004 –
Solid particle protection – dust tight (no ingress of dust; complete
protection against contact) and Liquid Ingress Protection – water jets
(water projected by a nozzle (6.3mm) against enclosure from any
direction shall have no harmful effects)
IN
Nominal Current
VN
Nominal Voltage
FLA
Full load amperes
m
Meters
mm
Milli Meters
A
Amperes
TCU
Thermal Capacity Utilised
kW
Kilo Watts
kVAR
Kilo Volt-Ampere Reduction
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kVA
Kilo Volt-Ampere
RJ11
Registered Jack 11 connector
PT100
Platinum Thermometer - 100 ohms at 0°C
RS485
Standard defining the electrical characteristics of drivers and receivers
for use in balanced digital multipoint systems published by the
Telecommunications Industry Association/Electronic Industries Alliance.
GSD
General Station Description – Profibus devices
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3
3.1
AmpCom – Motor & Energy Management System
General
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The motor and energy management system shall consist of
a Current/Voltage Measurement Module and a Main CPU
Module.
The motor and energy managements system shall have a
current operating range of 0.1 and 2000 amperes.
The motor and energy management system shall provide
current, voltage, power and temperature measurementbased protection functions.
Current and Voltage measurements shall be performed by a
three-phase Current/Voltage Module that provides electrical
isolation between the primary measurement circuit and the
Main CPU Module.
The three-phase Current/Voltage Module shall be capable of
primary pass through of motor cables up to 5A.
In medium and high voltage applications or low voltage
applications above 5A, the Current/Voltage Module shall be
wired in series with secondary windings from primary current
transformers with a secondary current rating of 5 amperes.
The three-phase voltage inputs for the Current/Voltage
Module shall be rated to 690V AC.
The three-phase voltage inputs on the Current/Voltage
inputs shall accept inputs from potential transformers in star,
delta or open delta configurations.
Two SPST output relays shall be available on the
Current/Voltage module for the motor starter control circuit.
Option for up to 20 configurable SPST output relays (10 x
expansion I/O modules) can be added to the Main CPU
Module.
All output relay contacts shall be rated AC-1, AC-15, DC-12
and DC-13.
All output relays shall be programmable for N.O., N.C. or
combination of both operation.
All output relays shall default to N.O. when auxiliary power is
removed from the Main CPU Module ensuring Fail-Safe
operation.
The Main CPU Module shall provide a minimum of three
inputs that are configurable for function.
Terminal connections and monitoring circuitry for connection
of a zero sequence (core balance) current transformer for
Earth Fault and Earth Leakage detection shall be available
as an option to the Main CPU Module.
Option for up to 20 inputs (10 x expansion I/O Modules) can
be added to the Main CPU Module.
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3.2
All inputs shall be configurable to accept digital Contact
Resistance or NPN inputs. All inputs shall also be
configurable to accept temperature PTC or PT100 inputs or
combination of either digital or temepareture.
The configured temperature PTC inputs shall provide PTC
protection and activate a Virtual Alarm. This Virtual Alarm’s
resistance setpoint shall be at 3.1kΩ and the Virtual Alarm’s
reset level shall be ≤ 1.65kΩ.
The configured temperature PTC inputs shall also provide
detection for PTC short circuits (< 20Ω) and PTC open
circuits (> 10kΩ).
The configured temperature PT100 inputs’ measurement
range shall be between -50° to 850° C with a resolution of 1°
C.
PT100 input Virtual Alarms shall be configurable to activate
on <, >, ≤ or ≥ of any of the values between the PT100
temperature measuring range.
The configured temperature PT100 inputs shall also provide
detection for PT100 short circuits (< 15Ω) and PT100 open
circuits
The motor and energy management system shall have an
operating power supply of 24V DC.
The motor and energy management system shall be
programmed by means of PC software and with the aid of a
PC interface.
LED indicators shall provide status indication that the motor
and energy management system is enabled & configured
and whether a communication bus fault is present.
The motor and energy management system shall be
equipped with an RS485 port at the Main CPU Module with a
RJ11 connector and 3-wire terminals. This port shall facilitate
system monitoring and programming.
The motor and energy management system shall continue to
provide a high level of motor protection in the event of
saturation of primary current transformers when used.
Construction
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The motor and energy management system shall be modular
in construction such that the functionality provided can be
configurable/expandable through the addition of field
installable and pluggable Expansion Modules.
The dimensions of the Current/Voltage Module shall not
exceed 90mm height x 53.7mm width x 63.2mm mounted
depth.
The dimensions of the Main CPU Module shall not exceed
90mm height x 35mm width x 63.2mm mounted depth.
Each additional Expansion Module (Earth Leakage & I/O)
shall add no more than 17.5mm to the width of the Main
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3.3
CPU Module and maintain the same height and width as the
Main CPU Module.
If required, Expansion Modules shall be detached from the
Main CPU Module with the aid of a Separate Mount Coupler
Module.
The motor management system shall be rated to IP65 when
installed in an appropriate enclosure.
Wiring terminals shall provide IP20 finger protection.
The motor and energy management system and accessories
shall be rated for an operating environment of -25 to +55°C.
The motor and energy management system shall be capable
of operating in an environment with a relative humidity range
of 0 to 90%, non-condensing.
Protection Functions
The motor and energy management system shall incorporate the following
protection function capabilities:
Current Elements
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Thermal overload (49)
- The thermal overload computational algorithm shall employ
a model that gives individual consideration to the motor
windings threshold.
- FLA (IN) setting range of 0.1 to 2000A
- Service factor setting range of 0.4 to 2.0
- Locked rotor current setting range of 250 to 1200% IN
- Locked rotor cold and hot time setting range of 1.0 to
18000 seconds
- Reset mode adjustable for manual or automatic reset
- Reset level setting range of 1 to 99% TCU
- Warning level setting range of 1 to 99% TCU
- Thermal start inhibit setting range of 1 to 99 % TCU
- Customization settings for cooling time and running state
time constants
- Adjustment settings for second speed ratings
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Current Imbalance
- Trip & Warning Setting range of 0 to 99%
- Trip & Warningdelay setting range of 0 to 2000 seconds
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Earth fault – residual method (64)
- Trip setting range of 1 to 200% IN
- Trip delay setting range of 0.1 to 99.9 seconds
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Undercurrent – load loss (37)
- Trip & Warning setting range of 1 to 99% IN
- Trip & Warning delay setting range of 1 to 300 seconds
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Overcurrent – load jam (50)
- Trip & Warning setting range of 10 to 600% IN
- Trip & Warning delay setting range of 0.0 to 120.0 seconds
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Inverse Sequence Current (46)
- Setting for Time Dependent/Independent function
- Trip & Warning setting range of 10 to 600% IN
- Trip & Warning delay setting range of 0.0 to 120.0 seconds
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Current Total Harmonic Distortion (Up to 32nd Harmonic)
- Trip & Warning setting range of 10 to 600% IN
- Trip & Warning delay setting range of 1 to 1999 seconds
Voltage Elements
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Undervoltage (27S)
- Trip & Warning setting range of 10 to 100% Vnom
- Trip & Warning delay setting range of 1 to 120 seconds
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Overvoltage (59)
- Trip & Warning setting range of 0.1 to 760 Volts
- Trip & Warning delay setting range of 1 to 30000 seconds
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Phase Reversal (47) – voltage based
- Setting to enable/disable function
- A trip shall occur 0.5 second after application of threephase voltage and phase rotation determined
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Phase Loss (27D) – voltage based
- Setting to enable/disable function
- Trip when VN drops below 70% within 3 seconds
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Voltage Assymetry
- Trip & Warning setting range of 1 to 200% VN
- Trip & Warning delay setting range of 1 to 30000 seconds
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Voltage Total Harmonic Distortion (Up to 32nd Harmonic)
- Trip & Warning setting range of 0.1 to 760 Volts
- Trip & Warning delay setting range of 1 to 1999 seconds
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Power Elements
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Under and Over Real Power
- Trip & Warning setting range of 1 to 25,000 kW
- Trip & Warning delay setting range of 0 to 2000 seconds
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Power Factor
- Lead and lag Trip & Warning setting ranges of 0.05 to 0.99
- Trip & Warning delay setting range of 0 to 2000 seconds
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Reactive Power
- Negative and positive Trip & Warning setting ranges of 1 to
25,000 kVAR
- Trip delay setting range of 0 to 2000 seconds
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Over and Under Apparent Power
- Trip & Warning setting range of 1 to 25,000 kVA
- Trip & Warning delay setting range of 0 to 2000 seconds
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Under and Over Frequency
- Trip & Warning setting range of 1 to 250Hz
- Trip & Warning delay setting range of 0 to 2000 seconds
Temperature Elements
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PTC Thermistor
- Reset mode adjustable for manual or automatic reset
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RTD PT100
- Each channel shall be individually settable
- Trip & Warning setting range of -50 to 850° C
Motor Starting Elements
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Start Inhibit (66)
- Setting range of 1 to 100 starts/hour
- Setting range for minimum time between starts of 1 to 5400
seconds
- Setting range for minimum time between stop and start of 1
to 5400 seconds
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Emergency Start
- Implemented by the use of the pre-defined configuration
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Reduced Voltage Starting (Star-Delta Starting)
- Implemented by the use of the pre-defined configuration
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Reversing motor control
- Implemented by the use of the pre-defined configuration
Other Elements
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3.4
Remote Trip
- The motor & energy management system shall have
provisions for tripping from an external device (e.g. vibration
switch) through contact closure to an assigned input.
Metering Functions
The motor & energy management system shall offer the following
metering functions:
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3.5
Individual phase currents in amperes (± 1% accuracy)
Average current in amperes (± 2% accuracy)
Average motor load as a percentage of the motor full load
ampere rating (± 2% accuracy)
Percent current imbalance (± 2% accuracy)
Residual ground fault current in amperes (± 2% accuracy)
Zero sequence (core balance) ground fault current in amperes
(± 2% accuracy)
Phase-to-phase voltage measurements (± 1% accuracy)
Three-phase average phase-to-phase voltage measurements
(± 2% accuracy)
Phase-to-neutral voltage measurements (± 1% accuracy)
Three-phase average phase-to-neutral voltage measurements
(± 2% accuracy)
Percent voltage asymmetry (± 2% accuracy)
Real three-phase power expressed in kW (± 1% accuracy)
Reactive three-phase power expressed in kVAR (± 2%
accuracy)
Apparent three-phase power expressed in kVA (± 5%
accuracy)
Power factor (± 2% accuracy)
Frequency (± 0.1 Hz of reading)
Individual RTD temperature measurements in °C (± 0.5°C
accuracy)
Control Functions
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The motor & energy management system shall have
provisions to reset a trip through contact closure to an
assigned input.
The motor & energy management system shall incorporate
control capability for star (wye)-delta motor applications.
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3.6
Communications
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3.7
The motor & energy management system shall provide two
on-delay timers for control purposes. The timers shall have an
adjustable range of 0 to 6500 seconds.
Network communications shall be accomplished through the
Main CPU Module expansion slot in the motor & energy
management system. Communication options shall include:
- Modbus Ethernet/TCP
- Profibus-DP
The Profibus-DP version shall be supported by a GSD file.
Statistical Data
The motor & energy management system shall provide the following statistical values related to
motor operation.
- Percent thermal capacity utilized (%TCU)
- Active Energy – kWh
- Reactive Energy -kVARh
- Total Number of Starts
- Number of Starts per Hour
- Time before trip (associated with ANSI 49)
- Time before restart (associated with ANSI 66)
- Total Running Hours
- Partial Running Hours
- Maximum Motor Start Time (associated with ANSI 51LR)
3.8
Diagnostic Historical Data
The motor & energy management system shall store diagnostic data events. The data chosen shall
record based on:
 Event
 Time Interval
 Start Up
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