Eaton NRX Series Instruction Leaflet
Eaton NRX Series Instruction Leaflet

Eaton NRX Series Instruction Leaflet

Drawout and breaker three-way cable interlock installation and removal instructions
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Instruction Leaflet
Series NRX drawout and breaker
three-way cable interlock installation
and removal instructions
Instructions apply to:
UL489 Series NRX RF Frame
IEC IZMX40
(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.
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.
IL01301060E
m WARNING
m WARNING
Effective June 2016
Series NRX

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Summary of Contents for Eaton NRX Series

  • Page 1 Instruction Leaflet IL01301060E Effective June 2016 Series NRX Series NRX drawout and breaker three-way cable interlock installation and removal instructions Instructions apply to: UL489 Series NRX RF Frame IEC IZMX40 m WARNING (1) ONLY QUALIFIED ELECTRICAL PERSONNEL SHOULD BE PERMITTED TO WORK ON THE EQUIPMENT.
  • Page 2: Section 1: General Information

    (Ja) Interlock assembly types 31 or 33 (3) (Jb) Interlock assembly type 32 (3) (K) Cable assembly - type 31 (4) or types 32 and 33 (8) - 5, 6, 8 and 10-foot lengths (1.5, 1.8, 2.4, and 3.0 m) (L) Long spacer tube (3) EATON www.eaton.com...
  • Page 3: Section 2: Installation Of Three-Way Cable Interlock

    (mounted in Step 5) using two M6 x 10 mm thread-forming screws (H). Torque to 65 - 85 in.-lbs (7 .3 - 9.6 N•m) (refer to Figure 8 for the correct configuration of type 31 interlock kits). (E) Drive Figure 3. Steps 3 and 4. EATON www.eaton.com...
  • Page 4 SHOWN IN FIGURES 14-16. MOUNTING FOR THE DRIVEN SIDE OF TYPE 32 IS SHOWN IN FIGURES 17-20. Step 8e: This step offers cable routing and installation procedures. Make sure that cables move freely in their cable housings before installation. EATON www.eaton.com...
  • Page 5 12. Lower nuts should be shouldered against end of thread and upper nut tightened against spacer tube (see Figure 13). 13. Hold lower nuts and torque upper nut to 30 - 40 in.-lbs (3.3 - 4.5 N•m). EATON www.eaton.com...
  • Page 6 Torque cable bulkhead nuts on both ends to 100 -120 in.-lbs (11 - 13 N•m) when proper clearance is attained on driven end. Rubber boot Outer bulkhead Bulkhead nut Driven end cable bracket Driven end cable bracket Figure 14. Step 10. EATON www.eaton.com...
  • Page 7 Torque cable bulkhead nuts on both ends to 100 - 120 in.-lbs (11 - 13 N•m) when proper clearance is attained on driven end. Lever plate Gap ø Connected breaker closed Figure 19. Step 12. Connected breaker open Figure 16. Step 12. EATON www.eaton.com...
  • Page 8: Section 3: Functional Test Of Interlock

    OPEN - OPEN Breakers A and C. The mechanical interlocks are now properly installed with the successful completion of the appropriate tests. Utilize a light amount of the supplied lubricant grease (G) if any interlock parts are sticky. This is only recommended if needed. EATON www.eaton.com...
  • Page 9 Series NRX drawout and breaker Instruction Leaflet IL01301060E three-way cable interlock installation Effective June 2016 and removal instructions Notese: EATON www.eaton.com...
  • Page 10: Disclaimer Of Warranties And Limitation Of Liability

    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...

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Ul489 series

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