ii
I.L. 40-386.12
PREFACE
Scope
This manual describes the functions and features of the REL 301(Non-pilot Relay System) and REL 302 (Pilot
Relay System) Reclosing/Synchronism check option. It is intended primarily for use by engineers and techni-
cians involved in the installation, testing, operation and maintenance of the REL 301/302 Reclosing Option.
Equipment Identification
The REL 301/302 equipment is identified by the Catalog Number on the REL 301/302 chassis nameplate. The
Catalog Number can be decoded by using Catalog Number Table in Section 1.6 which is included for reference
only.
Production Changes
When engineering and production changes are made to the REL 301/302 equipment, a revision notation
(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 rep-
resentative for RMR authorization. All equipment should be returned in the original packing containers if possi-
ble. 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 installation and test of the reclosing option.
Contents of Relay System
The REL 301/302 Relay System includes the style numbers, listed below, for each module.
Module Style Number
FT-10 Surge Protection 1502B35
Backplane Surge Protection 1612C53
Option (Reclosing/synch-check) 1614C19
Filter (Input Module) 1612C34
Microprocessor 1613C55
Display (Optional) 1613C69
Power Supply/Relay Outputs 1612C68
VT 1612C80
CT 1612C79
RS 232 Communication Interface 1614C94
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