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ARMY TM 9-6115-644-24
AIR FORCE TO 35C2-3-446-12
MARINE CORPS TM 09249A/09246A-24/2
DIFFERENCES BETWEEN MODELS.
1-10-1 The differences between models of the generator sets covered in this manual are as follows:
a. Model MEP-805A is equipped with a 50/60 Hz generator, 50/60 Hz frequency meter, and 50/60HZ frequency
selector switch.
b. Model MEP-815A is equipped with a 400 Hz generator and 400 Hz frequency meter.
1-10-2 Performance characteristics for the two models are shown in TABLE 1-2.
TABLE 1-2. Performance Charateristics
(a).
(b)
(c)
(d)
(e)
( f
(g)
(h)
(i)
(j)
Voltage wave form
deviation factor
Single voltage
harmonics:
Voltage unbalance
Phase balance voltage
Voltage modulation
Voltage regulation
Short-term stability
(30 seconds)
Long-term stability
(4 hours)
Voltage drift (60° F
(16° C) in 8-hour
period)
Dip and rise for
rated load
Recovery time
Dip for low power factor
load
Recovery time
MEP-805A
5% (max)
2% (max)
5% of rated
voltage (max)
1% of rated
voltage (max)
1% (max)
1% (max)
1% of rated
voltage
2% of rated
voltage
± 1% (max)
15% of rated
voltage (max)
0.5 seconds
30% of no-load
voltage (max)
0.7 seconds
85% of no-load
voltage
MEP-815A
5% (max)
2% (max)
5% of rated
voltage (max)
1% of rated
voltage (max)
1% (max)
1% (max)
1% of rated
voltage
2% of rated
voltage
± 1% (max)
12% of rated
voltage (max)
0.5 seconds
25% of no-load
voltage (max)
0.7 seconds
95% of no-load
voltage
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