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I.L. 40-386.3
Scope
This manual describes the functions and features of the REL 301(Non-pilot Relay System) and REL
302 (Pilot Relay System). It is intended primarily for use by engineers and technicians involved in the
installation, testing, operation and maintenance of the REL 301/302 system.
Equipment Identification
The REL 301/302 equipment is identified by the Catalog Number on the REL 301/302 chassis name-
plate. The Catalog Number can be decoded by using Catalog Number Table in Section 1.6.6.Both REL
301 and REL 302 can be either vertically or horizontally mounted.
Production Changes
When engineering and production changes are made to the REL 301/302 equipment, a revision no-
tation (SUB #) is reflected on the appropriate schematic diagram, and associated parts information.
Equipment Repair
Repair work is done most satisfactorily at the factory. When returning equipment, contact your field
sales representative for RMR authorization. All equipment should be returned in the original packing
containers if possible. Any damage due to improperly packed items will be charged to the customer.
Document Overview
SECTION 1 provides the Product Description. SECTION 2 presents the Functional Specification.
SECTION 3 presents the Setting Calculations. Installation and Operation are described in SECTION
4. Finally, SECTION 5 covers Acceptance Test, Maintenance Test and Calibration procedures.
Contents of Relay System
The REL 301/302 Relay System includes the style numbers, listed below, for each module.
Module
FT-10 Surge Protection
Backplane Surge Protection
Option (Reclosing/synch-check)
Filter (Input Module)
Microprocessor
Display (Optional)
Power Supply/Relay Outputs
VT
CT
RS232C Communications (Optional)
PREFACE
Style Number
1502B35
1612C53
1614C19
1612C34
1613C55
1613C69
1612C68
1612C80
1612C79
1614C94
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