GE Industrial Solutions EntelliGuard G NEUTRAL SENSOR User Manual

EntelliGuard-G
DEH-41387
Instruction sheet
Gebrauchsanleitung
-NEUTRAL SENSOR (ROGOWSKI COIL)
-NEUTRALWANDLER (ROGOWSKI SPULE)
DEH-41387 R02 R1213642 8/30/13
Instruction sheet
EntelliGuard-G
Gebrauchsanleitung
4.4.9 Neutral Rogowski Coil:
. When an EntelliGuard device in a 3 pole
configuration is used in a 4 wire network a fourth sensor needs to be placed in the
Neutral. It also must be connected to the Trip Unit input as indicated elsewhere in the User Manual.
The external neutral rogowski mounting kit comes with three mounting brackets, two fixing screws, two cable ties, one 2m long twisted pair extension lead and one neutral rogowski coil
The mounting bracket has been designed so to fit a multiple number of standard neutral bar arrangement as illustrated on figures A, B and C
As standard frame 1 breakers are provided with frame 1 external neutral rogowski coils. Likewise fame 2 breakers are provided with frame 2 external rogowski coils and frame 3 breakers with the frame 3 Rogowski coils.
Envelope 1
Cat No Rating
G04HNRC 400A G07HNRC 630A G08HNRC 800A G10HNRC 1000A G13HNRC 1250A G16HNRC 1600A G20HNRC 2000A
Envelope 3
Cat No Rating
G32LNRC 3200A G40LNRC 4000A G50LNRC 5000A G64LNRC 6400A

Fig A: Frame 1 Rogowski

Instrukcja arkuza
Envelope 2
Cat No Rating
G04MNRC 400A G07MNRC 630A G08MNRC 800A G10MNRC 1000A G13MNRC 1250A G16MNRC 1600A G20MNRC 2000A G25MNRC 2500A G32MNRC 3200A G40MNRC 4000A
The neutral rogowski coil should be fitted in the
correct location with respect to the neutral earth connection (restri For further details consult application notes and drawings provided.
The neutral rogowski coil should be positioned with the arrow facing the main bus bars as illustrated on figure A, B & C and shown diagrammatically on figures D and E.
The 2m extension lead should next be plugged into the neutral rogowski coil flying lead and routed back to the breaker. The end connectors marked +ve and -ve should be terminated at the secondary disconnect in-line with connections shown on figure D and E. Using a longer extension lead than that provided may result in EMI affecting the performance of the trip unit
Important Note:
a. If no neutral sensor is in use, then a shorting jumper must be installed between the NRC+ and NRC- terminals
b. If a neutral sensor is in use, it must be wired to these two terminals, and the shorting jumper must be removed.
cted or unrestricted neutral).
4.4.9-01
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