Littelfuse PGR-3100 Series User Manual download pdf

Protection Relays & Controls

Ground-Fault Protection – Ungrounded AC Systems

PGR-3100 SERIES

Ground-Fault Indication System

Description

The PGR-3100 indicates the presence of voltage on each

phase of a three-phase system. The LEDs on the panel

illuminate when voltage is present. When a ground-fault

occurs, the voltage on the faulted phase reduces to ground

potential, causing the LEDs for the faulted phase to dim

and the LEDs for the unfaulted phases to become brighter.

Ungrounded ac systems are required by the National

Electrical Code (NEC

) Article 250.21(B) and the Canadian

Electrical Code Part 1, Section 10-106 (2) to have ground

detectors, such as the PGR-3100, installed on the system.

External potential transformers (PTs) can be used to step

down system voltage, allowing the PGR-3100 to be applied to

any system voltage. PTs are not required for system voltages

up to 600 Vac. Also available mounted in NEMA 4 enclosure.

Speciﬁcations

Input Voltage Up to 600 Vac 50/60 Hz

Indicator Off Voltage < 30 Vac line to ground

Dimensions H 88.9 mm (3.5”);

W 108 mm (4.3”);

D 54 mm (2.1”)

Test Button Local

Approvals

CSA certiﬁed, UL Listed

Conformally Coated Standard feature

Warranty 5 years

Mounting Panel

ORDERING NUMBER MOUNTING

PGR-3100 Panel mount

Ordering Information

Simpliﬁed Circuit Diagram

FEATURES BENEFITS

NEC

and CEC Code

compliant

Meets National Electrical Code (NEC

) Article

250.21(B) and Canadian Electrical Code Part 1,

Section 10-106 (2) requirements for ungrounded

systems

Phase LEDs

Indicates presence of a ground fault and the

faulted phase as well as phase-to-ground

voltage on an energized bus

Redundant LEDs

Redundant long-life LEDs (two per phase) to

ensure reliability

Lamp test button Veriﬁes LEDs are operating

Features & Beneﬁts

PGR-3100

UNGROUNDED

SUPPLY

PGR-3200

(Ground-Fault

Indication System)

(Ground-Fault

Protection System)

Rev: 4-B-050213

Based on Manual Rev 6

Littelfuse reserves the right to make product changes, without notice. Material in this document is as accurate as known at the time of publication. Visit Littelfuse.com for the most up-to-date information.

Littelfuse.com/PGR-3100

Littelfuse PGR-3100 Series User Manual

Browse online or download User Manual for Hardware Littelfuse PGR-3100 Series. Littelfuse PGR-3100 Series User Manual

Summary of Contents

Comments to this Manuals

Littelfuse PGR-3100 Series User Manual

Browse online or download User Manual for Hardware Littelfuse PGR-3100 Series. Littelfuse PGR-3100 Series User Manual

Summary of Contents

Comments to this Manuals

Related products and manuals for Hardware Littelfuse PGR-3100 Series