Littelfuse PGR-6800 Series - Manual

Protection Relays & Controls
© 2013 Littelfuse Protection Relays & Controls
Motor Protection–Pumps (PGR 6000 Family)
PGR-6800 SeRieS
Pump Protection Relay
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.
PGR-6800 SERIES
PGB-6800
(Remote Indication
and Reset Assembly)
(Pump Protection Relay)
M
L2
L1
ORdeRinG nuMbeR COnTROL POWeR FuLL-LOad CuRRenT
PGR-6801-24 24 Vdc 7-19.6 A
PGR-6801-120 120 Vac 7-19.6 A
PGR-6801-240 240 Vac 7-19.6 A
PGR-6802-24 24 Vdc 19-44.2 A
PGR-6802-120 120 Vac 19-44.2 A
PGR-6802-240 240 Vac 19-44.2 A
PGR-6803-24 24 Vdc 40-90.4 A
PGR-6803-120 120 Vac 40-90.4 A
PGR-6803-240 240 Vac 40-90.4 A
Ordering Information
Simplified Circuit Diagram
PGB-6800 Remote Indication
and Reset Assembly
Optional remote indication of overload,
undercurrent, phase unbalance, phase loss,
and phase sequence. Remote reset included.
Accessories
A
A
aCCeSSORieS RequiReMenT
PGB-6800 Optional
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
Features & Benefits
Specifications
Protective Functions
(IEEE Device Numbers)
Input Voltage
See ordering information
Frequency 50, 60 Hz
Dimensions H 83 mm (3.3”); W 78 mm (3.1”); D 99 mm (3.9”)
Test Button Standard feature
Reset Button Standard feature
Output Contacts Isolated form A and Form B
Approvals UL Listed (E343314)
Warranty 5 years
Mounting DIN
Overload (49, 51)
Phase sequence (46)
Undercurrent (37) Unbalance (current) (46)
Phase loss (current) (46)
Littelfuse.com/pgr-6800
Rev: 4-A-050213
Based on Manual Rev 0