FEDERAL PIONEER 50H3 User Manual

INSTRUCTIONS FOR THE CARE AND MAINTENANCE
OF H-3 AND HL-3 CIRCUIT BREAKERS
C-3-222-1
April 2000
FEDERAL
PIONEER
Courtesy of NationalSwitchgear.com

FEDERAL PIONEER 50H3 Specifications

General

Brand	FEDERAL PIONEER
Model	50H3
Category	Circuit breakers
Language	English

Summary

Instructions for Care and Maintenance of H-3 and HL-3 Circuit Breakers

Section 1: General Description

Section 2.5-2.6: Power Terminal and Secondary Control Connections

Guidelines for correctly connecting power terminals and secondary control circuits.

Section 4: Breaker Operation

Section 4.1-4.3: Drawout, Grounding, and Control Contacts

Section 4.4-4.8: Closing, Opening, and Interlocks

Section 4.9-4.13: Protection, Fuses, and Indicators

Features like rejection, fault protection, fuses, and anti-single-phase devices.

Section 6: Pre-Service Inspection

Section 6.1-6.5: General Inspection and Testing

Visual checks, wiring inspection, interlock verification, and manual operation tests.

Section 6.6-6.7: Fixed and Drawout Breaker Checks

Section 7: Basic Breaker Maintenance

Section 7.1-7.2: Maintenance Requirements and Tools

Section 7.3: Basic Maintenance Procedure

Step-by-step guide for performing basic maintenance, including cleaning and checks.

Section 8: Detailed Maintenance Instructions

Section 8.1-8.3: Linkage and Latch Adjustments

Procedures for adjusting closing linkage eccentric, close latch, and trip latch.

Section 8.4-8.7: Interlocks, Trip Coils, and Switches