ComAp IL-NT MRS15 - Voltage Measurement; Single Phase Applications

InteliLite
NT
– MRS3,4, AMF8,9, SW version 1.4, ©ComAp – October 2008 25
IL-NT-MRS3,4-AMF8,9-1.4-Reference Guide.pdf
Voltage measurement
G
GENERATOR MAINS
L3L2L1N
L1
L2
L3
N
L3L2L1N
G
GENERATOR MAINS
L3L2L1N
L1
L2
L3
L3L2L1N
Hint:
No separation transformers for three wires voltage connection (without N) are needed.
Switchboard lighting strikes protection according standard regulation is expected !!!
Single phase applications
There is not a separate archive file for single-phase applications. Use standard ail archives.
Recommended wirings
Generator (and mains) single-phase voltage has to be connected to all three-voltage terminals L1, L2
and L3. Generator current has to be connected to L1l and COM terminals only.
Voltage measurement
G
GENERATOR MAINS
L3L2L1N
L
N
L3L2L1N
Hint:
Switchboard lighting strikes protection according standard regulation is expected !!!
Current measurement
To ensure proper function
Use cables of 2,5mm
2
Use transformers to 5A
Connect CT according to following drawings. Terminals L2l and L3l are opened.