5 input voltage tolerances – Compaq 9900 User Manual
Page 99

Hitachi Lightning 9900™ User and Reference Guide
85
5.2.5 Input Voltage Tolerances
Table 5.3 lists the input voltage tolerances for the three-phase 9960. Transient voltage
conditions must not exceed +15-18% of nominal and must return to a steady-state tolerance
within of +6 to -8% of the normal related voltage in 0.5 seconds or less. Line-to-line
imbalance voltage must not exceed 2.5%. Nonoperating harmonic contents must not exceed
5%.
Table 5.3
Input Voltage Specifications for Three-Phase Power
Frequency
Input Voltages (AC)
Wiring
Tolerance (%)
60 Hz
± 0.5 Hz
200V, 208V, or 230V
three-phase three wire + ground +6% / -8%
50 Hz
± 0.5 Hz
200V, 220V, 230V, or 240V three-phase three wire + ground +6% / -8%
50 Hz
± 0.5 Hz
380V, 400V, or 415V
three-phase four wire + ground
+6% / -8%
Note: User input requires a 30-amp circuit breaker for three-phase power.
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