IS-NT-Async-SPI, SW Version 1.2, ©ComAp – February 2011
IS-NT-Async-SPI-1.2.PDF
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COMMON: Three pole GCB’s are supposed for the gen-set. When MCB is closed Neutral contactor opens.
Hint:
Configure Binary output Neutral CB C/O and Binary input Neutral CB fdb Prior to Neutral contactor function
is used.
Neutral contactor fail is detected when no feedback comes within 400ms or when are closed MCB and
Neutral contactor for more than 400 ms.
Basic settings
Gen-set name
User-defined name, used for controller identification at remote connections. Gen-set name is max 15
characters long and has to be entered using PC software.
Hint:
The setpoint can be changed using PC SW only (e.g. InteliMonitor). Gen-set name isn’t affected by
GenConfig SW.
Nomin power [ kW – MW* ] (FV)
Nominal power of the generator.
Step: 0,1 kW / 1 kW / 0,01 MW*
Range: 0,1 kW – 320,0 MW*
Force value possibility: Yes
*Note:
The actual setpoint units and range depend on setting of the Power format (see GenConfig manual).
Nomin current [ A ] (FV)
This is the current limit for the generator. IDMT over current and short current protections are based on this
setpoint. See Generator protections: 2Inom del, Ishort setpoints. Nominal current can be different from
generator rated current value.
Step: 1 A
Range: 1 - 10000 A
Force value possibility: Yes
!!! VERY IMPORTANT !!!
• The maximum input current to the controller current terminals is 11 Amps. Higher value is
displayed as measured limit, e.g. 15 Amps from CT is measured and displayed as 11 Amps.
• Take special care when selecting CT’s. All available 5 Amp CT’s do not have a range up to 11
Amps.
CT ratio prim [ A ]
Gen-set phases Current Transformers ratio – primary side.
Step: 1 A
Range: 1 – 10000 A
CT ratio sec [ /5A / /1A ]
Gen-set phases Current Transformers ratio – secondary side selection /5A or /1A. Available in IG-xxC and
IS-NT versions. In standard IG-EE/NT units only 5 A range available.
Hint:
Do not switch to 1A range unless you have IG-NTC/EEC or IS-NT hardware.
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