Product Manual

ManualsBrandsGenerac ManualsSkid mounted120kW (Prime) / 144kW (Standby) Skid-Mount Diesel Generator (John Deere Engine) w/ Single-Axle Trailer

Owner’s Manual for Mobile Generator 35

Operation

Fine Voltage Adjustment

See Figure 3-8. Adjust fine voltage with the fine voltage

potentiometer (A). Voltage adjustment range is ±10%.

Figure 3-8. Fine Voltage Potentiometer

Voltage Regulator

The voltage regulator controls the output of the generator

by regulating the current into the exciter field. The voltage

regulator is adjusted before shipment from the factory.

The regulator has four screwdriver adjustable

potentiometers that may be adjusted for under frequency

roll-off (U/F), U/F dip (DIP), stability (STAB), and voltage

(VOLT). Contact a GMP ASD for additional information

before attempting to adjust the voltage regulator. NOTE:

For units equipped with a Marathon DVR2000E+

automatic voltage regulator, see the Marathon operating

manual provided with the unit.

Customer Convenience

Receptacles

The unit is equipped with five receptacles. The 240/

120VAC twist-lock receptacles are rated at 50A each.

The 120VAC duplex receptacles are rated at 20A each,

with ground fault circuit interrupt (GFCI) protection. The

receptacles are not routed through the main circuit

breaker. Each receptacle has its own circuit breaker,

located directly above or next to the receptacle. Each

breaker is sized to the maximum rating of the

corresponding receptacle.

Figure 3-9. Receptacle and Breaker Locations

NOTE: Power to the receptacles is available any time

the generator is running, even if the main circuit breaker

is OFF (O). Verify equipment connected to the

receptacles is turned OFF before turning the breakers

ON (I).

NOTE: When the voltage selector switch is in position for

480/277V 3-phase, voltage at the two GFCI receptacles

is 139 volts and the voltage at the three twist-lock

receptacles is 240/139 volts. Generac Mobile does not

recommend using the receptacles in the 480V position.

When the voltage selector switch is in position for 208/

120V 3-phase, voltage at the three twist-lock receptacles

and the two GFCI receptacles is 208/120 volts.

011136

CAUTION

(000303)

Equipment Damage. Verify voltage application

before making changes to factory settings. Incorrect

voltage applied to a load could result in equipment

damage.

A 20 A circuit breakers

B 50 A circuit breaker (3 locations)

C 120/240 V twist-lock receptacle (3 locations)

D 120 V GFCI receptacle (2 locations)

004866