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Electrical Specifications
975-0466-01-01
A–3
Islanding Protection
Adjustable Disconnect Settings
Voltage and frequency disconnect and islanding protection are essential safety
features that ensure no person working on the grid is harmed by a distributed
energy source. Default software settings are programmed into each GT Inverter at
the factory to ensure it does not island according to relevant safety regulations
(AS4777.3 Clause B4) and that out-of-bounds voltage or frequency results in
disconnection as required (AS4777.3 Clause B2 and B3).
In some instances it may be desirable to adjust these default settings. For example,
the GT Inverter may experience nuisance trips (taking the inverter offline) if the
grid is weak and the voltage falls outside the allowable range specified in the
regulations. With permission from the utility, the factory settings may be changed
to allow the GT inverter to operate over a wider grid voltage range.
The utility disconnect settings are password protected and should only be changed
by qualified service personnel, using the Xantrex GTConfigLite software tool. For
more information about installing and using GTConfigLite, see the
GTConfigLite
User’s Guide
, available with the software.
Default Utility Disconnect Settings and Adjustment Ranges
Requirement
AS4777.3 Clause B4
Type
Active rate-of-change of voltage
Setting
Default
Min
Max
Phase-to-Phase (rms) High Threshold Voltage
265.00
230.00
270.00
Phase-to-Phase (rms) Reconnect Voltage
265.00
230.00
270.00
Phase-to-Phase (rms) Low Threshold Voltage
203.00
200.00
230.00
Voltage (rms) High Clearing Time (ms)
2000
2000
5000
Voltage (rms) Low Clearing Time (ms)
2000
2000
5000
Frequency High Threshold (Hz)
51.00
50.00
55.00
Frequency Low Threshold (Hz)
48.00
45.00
50.00
Frequency High Clearing Time (ms)
2000
2000
10100
Frequency Low Clearing Time (ms)
2000
2000
10100
Reconnect Delay (ms)
60000
10000
305000
Summary of Contents for GT2.8-AU-QC-230
Page 1: ...Xantrex Grid Tie Solar Inverter Owner s Manual GT2 8 AU QC 230 GT5 0 AU QC 230 ...
Page 2: ......
Page 3: ...Xantrex Grid Tie Solar Inverter Owner s Manual ...
Page 8: ...vi ...
Page 14: ...Contents xii 975 0466 01 01 ...
Page 16: ...xiv ...
Page 18: ...xvi ...
Page 58: ...4 4 ...
Page 70: ...Monitoring the Inverter 5 12 975 0466 01 01 ...
Page 76: ...Maintenance and Troubleshooting 6 6 975 0466 01 01 ...
Page 82: ...A 6 ...
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