Eaton IZMX40 Montageanweisung Seite 6

Instruction Leaflet IL01301059E
effective September 2012
Section 3: Functional Test of Interlock Assembly
Begin test sequence with all breakers OPEN.
Check 1: CHARGE and CLOSE Breaker A.
• Inspect driven lever on Breaker B – It should be positioned as
shown in Figure 15 - Check 1.
• CHARGE Breaker B and attempt to close Breaker B – it should not
respond to CLOSE attempt (no noise, spring discharge or contact
motion)
• If Breaker B responds to the CLOSE attempt additional adjustments
may be required at cable mounting brackets (refer to Section 2,
Step 9).
Check 2: OPEN Breaker A
• The interlock should release
• CLOSE Breaker B – Verify it closes with OPEN/CLOSED indicator
• Breaker A should now be held in the OPEN position
• OPEN Breaker B
Repeat Checks 1 and 2 above on Breaker B
• Verify proper operation
The mechanical interlock is now properly installed and adjusted. Utilize
a light amount of the supplied lubricant grease (I) if any interlock parts
are sticky. This is only recommended if needed.
6 EATON CORPORATION www.eaton.com
Installation and Removal Instructions
for Series NRX Drawout Breaker
Two-Way Cable Interlock Kit
Begin test sequence
(Breaker A OPEN)
(Breaker A CLOSED)
(Breaker A OPEN)
Interlock Logic
Breaker A
0
1
0
Figure 15. Test Sequence
(Breaker B OPEN)
(Breaker B OPEN)
(Breaker B CLOSED)
Breaker B
0
0
1