TM 5-6115-586-34
Table 2-6. Power Plant Operating Limits (Electrical System)
Limit
Type
400-Hz
60 Hz
Tolerance
Remarks
No-load to full-load.
390 Hz
58.5 Hz
Maximum
410
61.5
Maximum
(2) Voltage Regulation:
Rms 1.2
Line-to-neutral.
120 volts
120 vac
At balanced loads under all ambient operating
conditions. Line side of main contactor.
(3) Specified
Outputs:
Rated power output
120 kva
12.5 kva
Nominal
At 0.8 power factor.
Line-to-neutral
120 volts
120 vac
Refer to nameplate rating.
Line-to-line
208 volts
240 vac
Refer to nameplate rating.
Frequency
400 Hz
60 Hz
See Item (1).
{4) System Electrical Output:
(a) Rated continuous per-
90kw
10kw
Approx
At all specified operating conditions.
formance.
0kw
10 kw
Approx
(b) Rated continuous ex-
30kw
10)kw
Approx
At all specified operating conditions.
ternal power through the
(0.8 pf)
(0.8 pf)
output receptacle.
(c) 400 Hz remote output
25 kw
Approx
12.5 kw each output. Mode sw in OFF or
VENT.
(d) 400 Hz auxiliary output
60 kw
Approx
30 kw each output. Environmental system
locked out.
(5) Undervoltage Trip:
Average line-to-neutral
voltage
90 volts
90 vac
Relay has nominal actuation time of 4.5
seconds
(6) Overvoltage Trip:
Average line-to-neutral
129 vac
129 vac
No trip.
Step input above 120 vac base voltage.
voltage
135 vac
135 vac
0.5 to 10
seconds
(7) Overspeed Switch:
420 Hz
Minimum
Centrifugal switch will shut down the turbine
440 Hz
Maximum
and de-energize the ac system.
(8) Underfrequency Switch:
370 Hz
Minimum
Protective panel will de-energize the ac system
378 Hz
Maximum
and open line contactor.
(9) Battery Charger:
(a) Charging rate
30 amps dc
Peak rate
Charging system is completely automatic.
0.5v,0
(b) Voltage range
28 vdc
Maximum at any charge rate.
(10) Overload Protection
(Gen.):
110 percent load
No trip (367
No trip (58
amps load
amps load
current)
current)
(11) Overload Protection (400
Hz Output Receptacle)
Single or three-phase
225 amp at
Overload sensor will trip the output contactor
calibrated
in 10 to 70 seconds at 77F.(25C).
temperature
12) Overload Protection (400
Hz Remote Output)
10 to 30
95 amps each
Overload sensor will trip remote output
output (190
contactor in 10 to 70 seconds at 77 .
F
amp total) at
(25C).
calibrated
temperature
(13) Overload Protection (400
Hz auxiliary output
receptacle):
3-phase
225 amps at
Overload sensor will trip the output contactor
in 10 to 70 seconds at 77F. (25C)
calibrated
temperature
at either
out put
receptacle.
2-14