Meg-Alert, GP500-G-DC, GenGuard Automatic Single Generator Insulation Tester Kit with 1% Analog Switchboard Meter, Input Voltage 24VDC
GP500-G-DC Includes Only:
- GP7000 1% analog switchboard meter, color-coded dial, 500 VDC Scale.
Features:
- DC Input model (Single Generator) (AC/DC)
- Auto/Manual test operation
- Adjustable alarm and pre-alarm set points
- Pre-alarm contacts with auto reset
- Latching Low-alarm contacts with manual reset
- Fused input and test lead output
- 500 VDC test voltage
- Calibration and system test switch
- Long-life, remote LED/switch assembly
- Ground Interrupter safety interface
- 1% Meg ohm meter with 4" color-coded dial
Applications:
- AC Synchronous Generators
- DC Generators
- Wind Turbine Generators
- Standby Generators
- Hydro Generators
Automatic Insulation Resistance Tester that monitors and protects critical-duty generators.
Operation
GenGuard applies a current-limited, fixed DC voltage to the generator's windings during idle periods. On four wire neutral grounded systems the ground interrupter automatically opens the neutral ground while the GenGuard is testing the windings. The ground interrupter safety circuit will not allow the generator to operate unless the neutral ground is closed. A solid-state comparator circuit monitors measured leakage current to 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. GenGuard will not impair the normal operation of the equipment being monitored.
For more information, please see 
Wiring Diagram
