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GU641A Controller Operation Manual
23
7. Parameters Setting
7.1 SYSTEM:
NO.
Items
Preset
Value Range
1.1
CT Ratio
200
1 to 1200
1.2
VT Ratio
1.0
1.0 to 25.0
1.3
Rated ph-voltage
220
45 to 9999VAC
1.4
Rated current
1000
0 to 6000A
1.5
Rated active power
500
0 to 3000KW
1.6
Voltage Type
1
1 to 5
1.7
Comm. Address
1
1 to 247
1.8
Startup mode
0
0 MAN/ 1 AUTO/ 2 the same
as last time
1.9
Auto scroll time
0s
1 to 60s / 0 Not used
1.10
Default settings
1.11
Password
0000 to 9999
1.12
Firmware update
Menu descriptions:
CT Ratio:
l
The current is derived from CT on generator.
l
Secondary current on CT is fixed at 5A.
l
Used to calculate for GEN: KVA, KW and PF.
l
Used for shutdown alarm: over current, overload, etc.
VT Ratio:
l
The voltage is derived from VT on Gen and Mains.
l
Used to detect frequency of Gen and Mains.
l
Used to calculate for GEN: KVA, KW and PF.
l
Used for shutdown alarm: over/under voltage, overload, etc.
Rated ph-voltage:
l
Used to define the rated voltage (phase to neutral) of Gen and Mains, rated V
Ph-Ph
=
“
Rated ph-
voltage
”
* 1.732.
l
Reference value for judging over/under voltage.
Rated current:
l
Used to define the rated current of generator.
l
Reference value for judging current.