PGR-4700 Datasheet, PDF (1/1 Pages) Littelfuse – The PGR-4700 Sensitive Ground-Fault Relay provides

POWR-GARD^® Protection Relays, Monitors & Systems
Ground-Fault Protection – Solidly Grounded System (PGR 4000 Family)
PGR-4700 SERIES (RCD300M2)
Sensitive Ground-Fault Relay
Simplified Circuit Diagram
CT _A
A
GROUNDED
SUPPLY
B
C
PGR-4700 SERIES
(Sensitive Ground-Fault Relay)
L1
L2
POWR-GARD
B
ANALOG%
CURRENT METER
(optional)
PGA-0500
Ordering Information
PGR-4700-24
PGR-4700-120
PGR-4700-240⁽¹⁾
Notes: 1. Not available with UL
24 Vdc Control Power
120 Vac Control Power
240 Vac Control Power
© 2015 Littelfuse Protection Relays & Controls
Description
The PGR-4700 Sensitive Ground-Fault Relay provides
sensitive ground-fault protection without nuisance tripping.
It detects very low-level leakage current on large circuits
to avoid or significantly reduce equipment damage. The
leakages can be identified as they develop and ground faults
can be detected before they become critical.
Applications
Ground-fault relays can be used for the protection of critical
circuits in panel boards and switch boards, OEM power
distribution panels and custom controls. They are typically
used in critical load applications with costly downtime and
hazards, such as high humidity, water, dust, chemicals, and
vibration.
Features/Benefits
• Adjustable trip level settings from 10 mA to 3.0 A
• Advanced harmonic filtering
• Compatible with VFD applications
• Adjustable time delay
• Metering output with PLC interface for continuous
monitoring of system
• CT loop monitoring
Accessories
A
PGC-5000 Series Ground-Fault Transformer
Required zero-sequence current transformer
specifically designed for low level detection. Flux
conditioner is included to prevent saturation.
PGA-0500 Analog % Current Meter
B
Optional panel-mounted analog meter displays ground-
fault current as a percentage of the set-point.
Specifications
IEEE Device Numbers
Input Voltage
Dimensions
Trip Level Settings
Trip Time Delay Settings
Contact Operating Mode
Harmonic Filtering
Test Button
Reset Button
CT Loop Monitoring
Relay Contacts
Communications
Conformally Coated
Approvals
Warranty
Mounting
50G, 50N, 51G, 51N
See ordering information
H 75 mm (3.0”); W 55 mm (2.2”); D 115 mm (4.5”)
10 mA – 3.0 A
0–1.5 s
Selectable fail-safe or non-fail-safe
(Internal switch)
Standard
Standard
Standard
Standard
2 Form C
Analog Output
Consult factory
UL listed (E183688)
5 Year
DIN, Surface (Standard)
Panel (with PMA-55 or PMA-60 adapter)
Rev: 1-B-092315
Based on Manual Rev: 2-A-073115