AEZ GCM02 - Thresholds

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GCM02-MT-ING4 NEW.doc c/02 04/03/2003 ENG Page 38 of 57
alarm prior to starting.
6 Stopping delay.
This establishes the timing required between GE/MAINS switching and
stopping to enable the motor to cool down. If a=0 excluded stop
60” 10 - 255”
7 Differential tripping
When the differential current exceeds the value established for a longer
amount of time than this the generator switch or contact maker is
opened.
1” 1-30”
8 Generator overload delay.
If the set current is exceeded the time set at the end of which the
overload alarm is triggered is overridden only by a possible short-circuit
current.
60” 15 - 255”
9 Sparkplug pre-heating time - PRC
This is the time setting of the sparkplug pre-heating prior to starting.
20” 1-255”
10 EJP Delay
This is the starting delay following the 30 mins. command
25’ 0-255’
11 Delay failure CG
If it doesn’t close, at the end of time, it is required signalled failure CG
OFF OFF-255”
12 Delay failure CR
If it doesn’t close, at the end of time, it is required signalled failure CR
OFF OFF-255”
13 Delay change 2 GE in stand-by
At the end of the programmed time, it is required the intervention of the
other group
4h
1÷24h
14 Hour counter
Pressing reset we have the reset of the hour meter
15 Starts counter
Pressing reset we have the reset of the starts counter
16 Kilowatthour
Pressing reset we have the reset of the kilowatthour
2.12.4 THRESHOLDS
N° DESCRIPTION VALUE Ref.value 400V Valore rif.400V
1 Three-phase or single-phase
This establishes the type of control over the mains power supply
input and generator input
Three-phase Three-phase /
Single-phase
2 Max. mains voltage.
The generator is started.
+ 10% Vn
210÷600V
440 V
3 Min. mains voltage.
The generator is started.
- 20% Vn
100÷400V
320 V
4 Maximum mains power supply frequency
Determines start up of the unit.
+20% Hz n
51÷75 Hz
60 Hz
5 Minimum mains power supply frequency
Determines start up of the unit.
-20% Hz n
35÷55 Hz
40 Hz
6 Max. generator voltage.
Alarm triggered - stoppage
+ 10% Vn
210÷600V
440 V
7 Min. generator voltage.
Alarm triggered + stoppage following cooling delay
- 20% Vn
100÷400V
320 V
8 Max. generator frequency
Alarm triggered + stoppage after 3 secs.
+20% Hz n
51÷75 Hz
60 Hz
9 Min. generator frequency
Alarm triggered + stoppage following cooling delay
-20% Hz n
35÷55 Hz
40 Hz
10 Max. generator current.
This establishes the max. current admitted on generator beyond
which an alarm is triggered and generator is stopped following
appropriate delay.
Value of max. current
on generator.
(Gener.nameplate )
1÷2040 A
1200A
11 Generator short-circuit.
This is the value of the generator current multiplied 3 or 4 times
Ig x 3
1024*3=3072
1÷8160A
12 Motor started Hz value
Interrupts automatic starting when this frequency is exceeded.
17 HZ
17÷25 Hz
13 Max. battery charger current
13,5÷27 V 5,4÷14,4 V