Subsea Systems, Inc.

GFM-4800 Ground Fault Monitor

The Model GFM-4800 Ground Fault Monitor was developed for use in underwater electrical safety applications. The patented design will interrupt power within 20 milliseconds of sensing a ground fault. The modular design ground fault monitor can be constructed in an AC or DC configuration.

Each signal from an external sensor module is displayed on an analog meter, calibrated to read the resistance to ground from 0-10 megohms. Each channel's trip point is individually set and displayed on the meter. When a ground fault occurs on a specific channel, the ground fault monitor provides an interruption.

Model GFM-4800 Advantages

Economy- Customer provided the option of purchasing the exact number of channels (up to a total combination of eight AC or DC channels) required to meet specific service needs. No more purchasing multi-channel equipment that is over specified for service.

Future Expandability- Customer has the option of adding channel modules to the Model GFM-4800 to meet additional service requirements.

Compact Size- The Model GFM-4800 provides expanded performance (up to 8 channels) within a standard 19" component width.

Features

Offers full protection even when system power is off

Continuously monitors DC resistance to ground

Permits centralizing circuit monitoring

Eliminates nuisance tripping, even on long cables

Allows user to select individual trip points for each channel

GFM-4800 Condensed Specifications

Rack Mount Chassis:	Standard 19"
AC, DC, or Combo modules:	1 - 8
Monitor Range:	40 to 4,000 VAC, 24 to 600 VDC
Shut Down time:	20 msec nominal
Power Requirements:	120/240 VAC, 50/60 Hz, 30 W
Front panel controls, fault warning indicators and analog meter
SPDT Annunciating relay / Solid state 10 Amp 240 VAC: relay output on each module
Remote reset and override capability
0-5 VDC analog output

DOWNLOAD PDF FILE: gfm4800-ds.pdf

Subsea Systems, Inc.

Model GFM-4800 Advantages

Last modified: August 16, 2010