Meg-Alert, GP2500-MU-AS, MotorGuard Single Automatic Single Motor Insulation Tester Kit with Analog Switchboard Meter, 2500VDC
GP2500-MU-AS Includes Only:
- GP7000-2 1% analog switchboard meter, color-coded dial, 2500 VDC scale
- GP8012-MU-AS remote LED / Switch assembly with power on/test on/pre-alarm/alarm LED indicators and 15 ft. cable
- GP10016 HV fuse block assembly
- GP10025 HV test lead 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 H.V. test lead
- 15 ft. two-way current-limited H.V. test switch
- 2500 VDC test voltage
- Remote Calibration and system test switch
- Long-life, flashing remote LED/switch assembly w/ 15 ft. cable
- 1% Panel meter with 4" color-coded dial
Applications:
- AC Induction Motors
- AC Synchronous Motors
- Wound Rotor 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
