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Eaton Series NRX Installation Instructions Manual
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Eaton Series NRX Installation Instructions Manual

Eaton Series NRX Installation Instructions Manual

Series nrxt, type nf frame (rear connect), ult 489, ul 1066, iec series nrx, type nf frame (front connect) ul 489, iec series nrx, type nf frame (hybrid), ul 489, iec
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Download this manual See also: Instruction Manual, Instruction and Installation Manual
front connect, and hybrid configurations
Instructions apply to:
Series NRXT, Type NF frame (rear connect),
ULT 489, UL 1066, IEC
Series NRX, Type NF frame (front connect)
UL 489, IEC
Series NRX, Type NF frame (hybrid),
UL 489, IEC
Effective November 2016
Supersedes July 2015
Contents
Description
General information . . . . . . . . . . . . . . . . . . . . . . . . 2
Rear connected configurations . . . . . . . . . . . . . . . 3
Front connected configurations . . . . . . . . . . . . . . . 5
Hybrid connected configurations . . . . . . . . . . . . . 10
Page

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Summary of Contents for Eaton Series NRX

  • Page 1: Table Of Contents

    Hybrid connected configurations . . . . . . . . . . . . . 10 Instructions apply to: Series NRXT, Type NF frame (rear connect), ULT 489, UL 1066, IEC Series NRX, Type NF frame (front connect) UL 489, IEC Series NRX, Type NF frame (hybrid), UL 489, IEC...

  • Page 2: Instruction Leaflet Il01301015E

    Holes for (Figure 1) and front connect configurations (Figure 2) . The arc hood surface on a Series NRX fixed circuit breaker is positioned over the breaker’s mounting arc chambers to primarily direct arc gas discharge (Figure 1 and Figure 2) . An arc hood is used on all fixed circuit breakers whether they are configured for rear or front connection .

  • Page 3: Rear Connected Configurations

    IT IS RECOMMENDED THAT APPROPRIATE INTERPHASE BARRIERS BE INSTALLED BETWEEN INSIDE AND OUTSIDE PRIMARY TERMINALS WITH ALL REAR CONNECTED CONFIGURATIONS TO ENSURE INSULATION INTEGRITY. IF INTERPHASE BARRIERS ARE ORDERED FROM EATON, INSTALLATION INSTRUCTIONS ARE PROVIDED WITH THE BARRIERS. Rear connect kit installation This breaker configuration uses universal bus adapters that bolt to the rear primary terminal pads (Figure 3) .
  • Page 4 Instruction Leaflet IL01301015E Installation instructions for Series NRX Type NF frame fixed breaker rear connect, Effective November 2016 front connect, and hybrid configurations Table 1. List of rear adapters UL 489 UL 1066 List Catalog number Connector number 42/50 kA...

  • Page 5: Front Connected Configurations

    Instruction Leaflet IL01301015E Installation instructions for Series NRX Type NF frame fixed breaker rear connect, Effective November 2016 front connect, and hybrid configurations Front connected configurations m CAUTION Arc hood IT IS IMPORTANT NOT TO EXCEED THE RECOMMENDED TORQUE VALUES WHEN MAKING BOLTED CONNECTIONS TO THE EQUIPMENT OR TO THE ADAPTERS THEMSELVES, ALL WHICH HAVE PRE-TAPPED HOLES.
  • Page 6 There are several connection configurations that can be used on the Step 2 Series NRX front connect . The list of available connections is shown With the screws removed, pull out the front of the arc hood and set in Figure 9 . These connectors can be used in any combination at it aside (Figure 11) .
  • Page 7 Instruction Leaflet IL01301015E Installation instructions for Series NRX Type NF frame fixed breaker rear connect, Effective November 2016 front connect, and hybrid configurations Step 4 Step 6 Remove four screws and lift up front cover . On the line side, remove Bus conductor extension kit installation—catalog number NRXBUSEXT .
  • Page 8 Instruction Leaflet IL01301015E Installation instructions for Series NRX Type NF frame fixed breaker rear connect, Effective November 2016 front connect, and hybrid configurations Step 7 Cable terminal connections can be made directly to the bus adapters Phase barriers inside the breaker or to the bus conductor extensions that extend out of the line and load sides of the breaker (refer to Step 5) .
  • Page 9 Instruction Leaflet IL01301015E Installation instructions for Series NRX Type NF frame fixed breaker rear connect, Effective November 2016 front connect, and hybrid configurations 2. Install additional cable terminal connections as required 4. Phase barriers made from a flexible rubber material are supplied (Figure 21) .

  • Page 10: Hybrid Connected Configurations

    Figure 25 and Figure 26 show two of the most common configurations . For proper installation procedures, please refer to pages 3–9 of this manual or contact the Eaton production facility for further information . Figure 23. Terminal shield installed on a front connect breaker Figure 25.
  • Page 11 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...
  • Page 12 Instruction Leaflet IL01301015E Installation instructions for Series NRX Type NF frame fixed breaker rear connect, Effective November 2016 front connect, and hybrid configurations Eaton 1000 Eaton Boulevard Cleveland, OH 44122 United States Eaton .com © 2016 Eaton All Rights Reserved Printed in USA Eaton is a registered trademark.