Generac Power Systems MAGNUM MMG75D User Manual

Operation
33701 C MMG75D-100D Operating Manual 29
Figure 3-7. Voltage Selector Switch Settings
VOLTAGE REGULATOR
The automatic voltage regulator controls the output of the generator by regulating the current into the exciter field.
The regulator has four screwdriver adjustable potentiometers that may be adjusted for under frequency (U/F) dip,
protention (U/F), stability, and voltage. The voltage regulator is adjusted before shipment from the factory. Contact
Generac Mobile Products LLC 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.
VOLTAGES AT RECEPTACLES
277/480V 3-PHASE
Switch styles vary by model.
L1-L2 = 480V L1-N = 277V N =
L2-L3 = 480V L2-N = 277V
L3-L1 = 480V L3-N = 277V
277/
480V
120/
208V
RECEPTACLE L-L L-N
GFCI - 139V
GFCI w/Buck - 120V
Twist-locks 240V 139V
00083
= Not recommended for normal use
L1-L2 = 240V L1-N = 120V N =
L2-L3 = 240V L2-N = 208V
L3-L1 = 240V L3-N = 120V
VOLTAGES AT RECEPTACLES
120/240V 3-PHASE
Switch styles vary by model.
RECEPTACLE L-L L-N
GFCI - 120V
GFCI w/Buck - 120V
Twist-locks 120V 0/120V
120/
240V 3PH
277/
480V
120/
208V
120/
240V
1PH
4 Position Voltage Selector Switch Option
00086
= Not recommended for normal use
L1-L2 = - L1-N = 120V N =
L2-L3 = - L2-N = -
L3-L1 = 240V L3-N = 120V
VOLTAGES AT RECEPTACLES
120/240V 1-PHASE
Switch styles vary by model.
RECEPTACLE L-L L-N
GFCI - 120V
GFCI w/Buck - 120V
Twist-locks 240V 120V
120/
208V
120/
240V
00087

Generac Power Systems MAGNUM MMG75D Specifications

General

Brand	Generac Power Systems
Model	MAGNUM MMG75D
Category	Portable Generator
Language	English