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Eaton NRX Series Installation And Operating Instructions Manual

Eaton NRX Series Installation And Operating Instructions Manual

Pt module
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Instruction Leaflet
Series NRX PT module installation and
operation instructions
Instructions apply to:
UL1066/ANSI, UL489 series NRX NF frame
IEC IZMX16
• 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.
IL01301074E
Effective July 2016
Supersedes February 2012
UL489 series NRX RF frame
IEC IZMX40
Series NRX

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Summary of Contents for Eaton NRX Series

  • Page 1 Effective July 2016 Instruction Leaflet IL01301074E Supersedes February 2012 Series NRX Series NRX PT module installation and operation instructions Instructions apply to: UL1066/ANSI, UL489 series NRX NF frame UL489 series NRX RF frame IEC IZMX16 IEC IZMX40 • WARNING (1) ONLY QUALIFIED ELECTRICAL PERSONNEL SHOULD BE PERMITTED TO WORK ON THE EQUIPMENT.
  • Page 2: Section 1. Description

    RESULT FROM CONTACT WITH ENERGIZED EQUIPMENT. ALWAYS VERIFY 208V L-L 1.95V L-N THAT NO VOLTAGE IS PRESENT BEFORE PROCEEDING. ALWAYS FOLLOW SAFETY PROCEDURES. EATON IS NOT LIABLE FOR THE MISAPPLICATION OR 240V L-L 2.25V L -N MISINSTALLATION OF ITS PRODUCTS.
  • Page 3: Section 2. Installation

    BREAKER Figure 5. Series NRX breakers with PXR trip units - 3-pole, 4- wire. MODULE 31 VC 30 VB 29 VA To additional breakers BREAKER Figure 3. Series NRX breakers with PXR trip units - 3-pole, 3-wire. EATON www.eaton.com...
  • Page 4 The PT module secondary may connect up to 16 Series NRX breakers using 18 AWG wire for each phase in a daisy-chain configuration and may extend to the furthest breaker in the the chain, to a maximum of 250 feet (Figure 8). EATON www.eaton.com...
  • Page 5: Section 3. Operation

    PHASE CONNECTED WILL DAMAGE THE PT MODULE. DISCONNECT ALL OF THE PHASES FROM THE MAINS (BY SELECTING “0”) BEFORE TESTING. AFTER TESTING, RETURN ALL PHASE SWITCHES TO THE “I” POSITION. Line phase switches Figure 9. Line phase switches. EATON www.eaton.com...
  • Page 6: Disclaimer Of Warranties And Limitation Of Liability

    Effective July 2016 Disclaimer of warranties and limitation of liability In no event will Eaton be responsible to the purchaser or user in The information, recommendations, descriptions, and safety contract, in tort (including negligence), strict liability, or otherwise notations in this document are based on Eaton Corporation’s...