Installation manual

Specifications
A–4 153396 Revision D
This manual is for use by qualified installers only
Over Voltage, Under Voltage and Frequency Ranges
Table A-4 provides the over voltage, under voltage, over-frequency, and
under-frequency detection limits for the Xantrex GT250. These detection limits
have been factory tested and deemed to be in compliance with UL1741 2nd Ed.
and IEEE 1547 requirements for utility interaction.
Table A-4 Over/Under Voltage and Over/Under Frequency Ranges
Vac Condition
(% of Nominal)
Xantrex GT250 480
Xantrex GT250 480 PG
Voltage Range Trip Time
Vac < 50%
(Fast Under-voltage)
Vac < 240 10 cycles
50% <=Vac < 88%
(Under-voltage)
240 <= Vac < 423ª 24 cycles
88% < Vac <= 110%
(Nominal)
423 < Vac <= 528 normal operation
110% < Vac < 120%
(Over-voltage)
528 < Vac < 576ª 12 cycles
120% >= Vac
(Fast Over-voltage)
576 >= Vac 10 cycles
f < rated -3.0
(Fast Under
Frequency)
f < 57.0 10 cycles
f < rated -0.7
(Under Frequency)
f < 59.3ª 10 cyclesª
f > rated +0.5
(Over Frequency)
f > 60.5 2 cycles
a
Adjustable, password-protected.