IB 6.1.12.1-1C
3
3
ABB
Table B3 - Standard Microelectronic Trip Devices
Reference IB 6.1.1.7-4 for MPS Operating Instructions and Testing Procedure
Device Elements
Device
Type
LT ST INST GND
Time-Current Curve
MPS-3
✓
✓
TD-9601
MPS-4
✓
✓
✓
TD-9602 [ST I
2
t OUT]
TD-9604 [ST I
2
t IN]
MPS-5
✓
✓
✓
✓
TD-9602 [ST I
2
t OUT]
TD-9604 [ST I
2
t IN]
MPS-nG
a
✓
TD-9603
a
Ground type devices add a ground trip element to the “n” type functions.
Table B4 – Standard Microelectronic Trip Devices with Communication
Reference IB 6.1.1.7-5 for MPS-C Operating Instructions and Testing Procedure
Reference IB 6.1.2.8-1 for MPS-C 2000 Operating Instructions and Testing Procedure
Reference IB 6.1.1.7-6 for BTSB Operating Instructions and Testing Procedure
Device Elements
Overcurrent
Device
Type
LT ST INST GND
Time-Current Curve
MPS-C-3
✓
✓
TD-9651
MPS-C-4
✓
✓
✓
TD-9651 [ST I
2
t OUT]
TD-9653 [ST I
2
t IN]
MPS-C-5
✓
✓
✓
✓
TD-9651 [ST I
2
t OUT]
TD-9653 [ST I
2
t IN]
MPS-C-nG
a
✓
TD-9652
MPS-C 2000
b
✓
✓
✓
✓
✓
TD-9651 [ST I
2
t OUT]
TD-9653 [ST I
2
t IN]
TD-9652
a
Ground type devices add a ground trip element to the “n” type functions.
b
The I
2
T delay feature for ST or INST, and GND is defeatable.
Courtesy of NationalSwitchgear.com
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