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Type NR oil switch installation and operation instructions
INSTALLATION AND OPERATION INSTRUCTIONS
MN230008EN November 2016
Product information
Introduction
Service Information MN230008EN provides installation
instructions, operation information and testing procedures
for the Type NR oil switch.
The information contained in this manual is organized
into the following major categories; Safety Information,
Product Information, Ratings and Specifications, Installation
Procedure, Switch Operation, Dimensions and Weights, and
Maintenance Information. Refer to the Table of Contents for
page numbers.
Read this manual first
Read and understand the contents of this manual and follow
all locally approved procedures and safety practices before
installing or operating this equipment.
Additional information
These instructions cannot cover all details or vari ations
in the equipment, procedures, or process described, nor
provide directions for meeting every possible contin gency
during installation, operation, or maintenance. When
additional information is desired to satisfy a problem not
cov ered sufficiently for the user’s purpose, please contact
your Eaton’s Cooper Power series product representative.
Acceptance and initial inspection
Each switch is completely assembled, inspected, tested and
adjusted at the factory and is filled to the correct level with
insulating oil. It is in good condition when accepted by the
carrier for shipment. Upon receipt of a switch:
1. Inspect the switch thoroughly for damage and loss of
parts or oil incurred during shipment. If damage or loss
is discovered, file a claim with the carrier immediately.
2. Check for oil leakage and tighten all bolts that may have
loosened during shipment, especially the bolts attaching
the head to the tank.
Handling and storage
If the switch is to be stored for an appreciable time before
installation, provide a clean, dry storage area. Locate the
switch so as to minimize the possibility of mechanical
damage, particularly to the bushings.
Description of operation
The Type NR oil switch is a single-phase device for use on
distribution circuits. Compact design makes this switch ideal
for use on capacitor banks, especially pole-top installations.
This switch is electrically operated and can be controlled by
time switches, voltage- or current-sensitive control devices,
or by single-pole, double-throw switches. An operating
handle, which also serves as a contact position indicator,
is provided for manually opening and closing the switch.
WARNING
Never manually close this switch into a faulted line . The
make-and-latch rating of the switch applies only when
it is electrically operated . Closing a switch manually on
a faulted line can result in death, severe personal injury,
and equipment damage .
G127 .0
Check switch ratings prior to installation
The switch must be applied within its specified ratings.
Check data plate ratings and compare with the system
characteristics at the point of application, prior to
installation. Tables 1 and 2 list the specifications and ratings
for the Type NR oil switch.
Quality standards
ISO 9001 Certified Quality Management System
