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Eaton Series NRX Manual

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Series NRX - installation and removal
instructions for drawout cassette
primary IP20 safety shutters
Instructions apply to:
UL489 series NRX RF frame
IEC IZMX40
Effective July 2016
Supercedes March 2011 Series NRXInstruction Leaet IL01301044E
•WARNING
(1) ONLY QUALIFIED ELECTRICAL PERSONNEL SHOULD BE PERMITTED TO WORK
ON THE EQUIPMENT.
(2) ALWAYS DE-ENERGIZE PRIMARY AND SECONDARY CIRCUITS IF A CIRCUIT
BREAKER CANNOT BE REMOVED TO A SAFE WORK LOCATION.
(3) DRAWOUT CIRCUIT BREAKERS SHOULD BE LEVERED (RACKED) OUT TO THE
DISCONNECT POSITION.
(4) ALL CIRCUIT BREAKERS SHOULD BE SWITCHED TO THE OFF POSITION AND
MECHANISM SPRINGS DISCHARGED.
FAILURE TO FOLLOW THESE STEPS FOR ALL PROCEDURES DESCRIBED IN
THIS INSTRUCTION LEAFLET COULD RESULT IN DEATH, BODILY INJURY, OR
PROPERTY DAMAGE.
•WARNING
THE INSTRUCTIONS CONTAINED IN THIS IL AND ON PRODUCT LABELS HAVE TO
BE FOLLOWED. OBSERVE THE FIVE SAFETY RULES:
– DISCONNECTING
– ENSURE THAT DEVICES CANNOT BE ACCIDENTALLY RESTARTED
– VERIFY ISOLATION FROM THE SUPPLY
– EARTHING AND SHORT-CIRCUITING
– COVERING OR PROVIDING BARRIERS TO ADJACENT LIVE PARTS
DISCONNECT THE EQUIPMENT FROM THE SUPPLY. USE ONLY AUTHORIZED
SPARE PARTS IN THE REPAIR OF THE EQUIPMENT. THE SPECIFIED
MAINTENANCE INTERVALS AS WELL AS THE INSTRUCTIONS FOR REPAIR AND
EXCHANGE MUST BE STRICTLY ADHERED TO PREVENT INJURY TO PERSONNEL
AND DAMAGE TO THE SWITCHBOARD.
2EATON www.eaton.com
Series NRX - installation and removal
instructions for drawout cassette
primary IP20 safety shutters
Instruction Leaet IL01301044E
Effective July 2016
ote:N The content of this IL applies to both PXR and Digitrip equipped breakers.
Appearance of product may vary.
Section 1: General information
Cassette safety shutters are insulating type shutters tested to IP20
protection. They operate automatically to cover a cassette’s fixed
primary contacts when the breaker is not in the CONNECT position
(Figure 1). Provisions are provided for padlocking the shutters in the
closed position.
Figure 1. Drawout cassette (front view, shutters open).
A complete drawout cassette shutter installation is comprised of two
duplicate, already assembled, shutter assemblies (Figure 2). Become
familiar with the shutter assemblies provided.
Figure 2.
Padlock
hole
Mounting tabs
Shutter
assembly
(up side down)
Shutter assembly
(right side up)
Spring retainers
Retainer
edge
Shutter assemblies.
The two interchangeable shutter assemblies are installed in the rear
backplane (Figure 3). The backplane is shown here removed from
its cassette for clarification purposes only. Become familiar with the
cassette’s rear backplane.
Figure 3.
Padlock hole
Mounting tab slots
(2 on each side)
Retainer
levers (2 on
each side) Spring retainer
pocket
Backplane
center
divider
Rear backplane only.
Fixed primary contacts
Three-pole shown in CLOSED position
Three-pole shown
4000 NRX RF DRAWOUT SUBTITLE IMAGE (12/15/2010)
3
EATON www.eaton.com
Instruction Leaet IL01301044E
Effective July 2016
Series NRX - installation and removal
instructions for drawout cassette
primary IP20 safety shutters
Section 2: Installation of cassette safety
shutter
This installation procedure will cover a three-pole installation. A
four-pole installation is done in a similar fashion. Proceed with the
following step for a three-pole installation:
Step 1: Note two mounting tabs located on the shutter assembly
opposite the padlock hole and the shutter retainer on the opposite side
(Figure 2).
It does not matter which shutter assembly is installed first, as long as
the padlock hole is positioned toward the center of the backplane.
Insert either shutter assembly at an angle as shown so the mounting
tabs engage small pockets in the backplane. Complete the installation
by pushing down on the other end of the shutter assembly until the
shutter retainer edge engages the backplane center divider, which is
indicated by a click (Figure 3). Once both ends of a shutter assembly
are engaged, test for a secure installation by gently tugging on the
shutter assembly to ensure the proper engagement.
An installed shutter assembly will automatically return to the CLOSED
position once it is not being held open.
Figure 4.
One shutter assembly
with mounting tabs
being engaged
One shutter
assembly shown
installed
Shutter assembly.
Figure 5. Shutter assemblies installed.
Section 3: Removal of cassette safety
shutter
Proceed with the following step for the removal of a shutter assembly.
Step 1: Push the two retainer levers on the backplane center divider
simultaneously (Figure 3) away from the shutter assembly being
removed to release the retainer edge. The shutter assembly can be
lifted up and out, once both tabs are released.
Figure 6.
Retainer lever
(1 of 2)
Retainer tabs.
Both shutter assemblies shown installed
4EATON www.eaton.com
Series NRX - installation and removal
instructions for drawout cassette
primary IP20 safety shutters
Instruction Leaet IL01301044E
Effective July 2016
Eaton is a registered trademark.
All other trademarks are property of their
respective owners.
Eaton
Electrical Sector
1000 Eaton Boulevard
Cleveland, OH 44122
United States
877-ETN-CARE (877-386-2273)
Eaton.com
© 2016 Eaton
All Rights Reserved
Printed in USA
Publication No. IL01301044E / TBG001278
Part Number: IL01301044EH02
July 2016
Disclaimer of warranties and limitation of liability
The information, recommendations, descriptions, and safety notations
in this document are based on Eaton Corporation’s (“Eaton”)
experience and judgment, and may not cover all contingencies.
If further information is required, an Eaton sales office should be
consulted.
Sale of the product shown in this literature is subject to the terms
and conditions outlined in appropriate Eaton selling policies or other
contractual agreement between Eaton and the purchaser.
THERE ARE NO UNDERSTANDINGS, AGREEMENTS, WARRANTIES,
EXPRESSED OR IMPLIED, INCLUDING WARRANTIES OF FITNESS
FOR A PARTICULAR PURPOSE OR MERCHANTABILITY, OTHER
THAN THOSE SPECIFICALLY SET OUT IN ANY EXISTING CONTRACT
BETWEEN THE PARTIES. ANY SUCH CONTRACT STATES THE ENTIRE
OBLIGATION OF EATON. THE CONTENTS OF THIS DOCUMENT
SHALL NOT BECOME PART OF OR MODIFY ANY CONTRACT
BETWEEN THE PARTIES.
In no event will Eaton be responsible to the purchaser or user in
contract, in tort (including negligence), strict liability, or otherwise
for any special, indirect, incidental, or consequential damage or loss
whatsoever, including but not limited to damage or loss of use of
equipment, plant or power system, cost of capital, loss of power,
additional expenses in the use of existing power facilities, or claims
against the purchaser or user by its customers resulting from the use
of the information, recommendations, and descriptions contained
herein.
The information contained in this manual is subject to change without
notice.