ARMY TM 9-6115-641-24
AIR FORCE TO 35C2-3-456-12
Table 1-1. Tabulated Data - Continued
8 Protection Devices:
a.
Low Oil Pressure Switch:
(1) Trip Pressure
(2) Voltage Rating
(3) Current Rating
b. Coolant High
Temperature Switch:
(1) Trip Temperature
(2) Voltage Rating
(3) Current Rating
c. Overvoltage Relay:
(1) Trip Point
Condition
(2) Trip Point
MEP-802A
15 ± 3 psi (103.4 ± 20.7 kPa)
24 VDC
7 amps
225 ± 5°F (107 ± 3°C)
24 VDC
7 amps
153 ± 3 VAC for no less than 200
milliseconds (120 VAC coil winding)
No more than 1.25 seconds after
trip conditions exist
MEP-812A
15 ± 3 psi (103.4 ± 20.7 kPa)
24 VDC
7 amps
225 ± 5°F (107 ± 3°C)
24 VDC
7 amps
153 ± 3 VAC for no less than 200
milliseconds (120 VAC coil winding)
No more than 1.25 seconds after
trip conditions exist
1-10. DIFFERENCES BETWEEN MODELS.
1-10-1. The differences between models of the generator sets covered in this manual are as follows:
a.
Model MEP-802A is equipped with a 60 Hz generator and 60 Hz frequency meter.
b.
Model MEP-812A is equipped with 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 Characteristics
1 Voltage:
(a) Voltage waveform
Deviation factor:
Single phase
Three phase
Single voltage
harmonics:
Single phase
Three phase
(b) Voltage unbalance
(c) Phase balance voltage
(d) Voltage modulation
(e) Voltage regulation
(f) Short-term stability
(30 seconds)
(g) Long-term stability
(4 hours)
MEP-802A
6% (max)
5% (max)
3% (max)
2% (max)
5% of rated voltage (max)
1% of rated voltage (max)
2.5% (max)
3% (max)
± 2% of rated voltage
± 4% of rated voltage
MEP-812A
6% (max)
5% (max)
3% (max)
2% (max)
5% of rated voltage (max)
1% of fated voltage (max)
2.5% (max)
3% (max)
± 2% of rated voltage
± 4% of rated voltage
