PGR-6803-240工業(yè)自動(dòng)化與控制的保護(hù)繼電器系統(tǒng)規(guī)格書(shū)PDF中文資料

Description

The PGR-6800 Pump Protection Relay provides protection for

pumps with three-phase motors up to 1,000 Vac. No current

transformers are required for currents up to 91 A. The protective

functions include overload, phase unbalance, phase loss, phase

sequence and undercurrent. The PGR-6800 Pump Protection

Relay is ideally suited for applications where operating without

load can induce failure. Motor current is monitored and an

undercurrent trip occurs when the current drops below a

preset level. No additional level detectors are required.

Features BENEFITS

No CTs required No current transformers required for currents up

to 91 A

Adjustable trip

settings

Adjustable overload trip class setting from 5 to 15

for use with a wide variety of pumps

Output contacts Form A and Form B ground-fault output contacts for

operation of separate annunciation and trip circuits

Remote indication Cause-of-trip indication and reset button

Overload Prevents insulation failures and fires; extends

motor life

Phase loss/Phase

sequence Detects unhealthy supply conditions

Unbalance (current) Prevents overheating due to unbalanced phases

Undercurrent Detects low level or no-load conditions