Meg-Alert, GP500-MU-AS 1%, MotorGuard Automatic Insulation Resistance Tester Kit with 1% Analog Switchboard Meter
GP500-MU-AS 1% Includes Only:
- GP7000 1% analog switchboard meter, color-coded dial, 500 VDC scale
- GP8013-MU-AS remote LED four (4)/switch assembly
Features:
- Single Motor Model
- Auto/Manual test operation
- Adjustable alarm set point
- Adjustable pre-alarm set point
- Latching alarm contacts with manual reset
- Fused input and test output
- 500 VDC test voltage
- Long-life, remote LED/switch assembly
- Compact, lightweight enclosure
- DIN Rail mounting bracket
- 1% Meg ohm meter with 4" color-coded dial
Applications:
- AC Induction Motors
- AC Synchronous Motors
- DC Motors
- Wound Rotor Motors
- Servo Motors
- Submersible Motors
Automatic Insulation Resistance Tester that monitors and protects critical-duty motors.
Operation
MotorGuard applies a current-limited, fixed DC voltage to the motor windings during idle periods. A solid-state comparator circuit monitors measured leakage current to the ground. Two adjustable set points, factory preset to customer specifications, can be programmed to signal a pre-alarm, alarm, and lockout the equipment from operating if the low set point is exceeded. The manual reset feature enables a return to operational status only after the alarm condition has been corrected. MotorGuard will not impair the normal operation of the equipment being monitored.
Note: For shunt wound separately excited DC motors, two (2) Motor Guards are needed: one (1) for the armature/rotor and one (1) for the fields.
Note: Motors powered by a Variable Frequency Drive or by most solid-state Soft Starts will REQUIRE isolation.
For more information, please see 
Wiring Diagram
