The PGR-4300 series relay operates on solidly-grounded ac systems. This generator ground-fault relay provides a simple method for detecting a ground-fault condition on generators without the need for current transformers (CTs). The lack of CTs greatly simplifies the installation process. This relay also monitors the neutral-to-ground path for continuity, and it is compatible with both three- and four-pole transfer switches. The PGR-4300 relay is ideal for any generator or application where there is not sufficient space to install CTs.
Features
No CTs required
Adjustable pickup (100–1200 A)
Adjustable time-delay (0–1.0 s)
Output contacts
POWR-GARD® technology
Analog output (0–1 mA)
N–G continuity alarm
Passive filtering