Internal bypass source

DOE-SPEC-3021-97

! Ground fault on high-resistance grounded systems causing [260]%

voltage surges of [50] milliseconds. Unfaulted phases may rise to full

line-to-line voltage for extended periods of time.

ATTENTION:

Internal bypass source parameters should be the same as those given for the normal source input, above. If the

input may come from more than one source (such as commercial power or standby generator), then enter the

worst case parameters.

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Internal bypass source. The internal bypass source for the UPS system has the

3.2.2

following characteristics:

Voltage

Phase/Wire

System Grounding Solid,

High Resistance, Ungrounded

Available Short Circuit Current

(amperes rms sym. at rated

voltage)

Steady-State Voltage

Variations

(+)

(-)

(+)

Frequency Variations

(-)

Total Harmonic Distortion