
Document number: SG104148TEN
Revision: B01
Issue date: 20.8.2012
Copyright© 2012 Sécheron SA - This document is not contractual and contains information corresponding to the level of technology at the date of release.
File: c-UR46-8S_inst_en.fm
C-27
UR46-81/82S
Installation
Version without core (optional)
Example: to set the maximum current release value Id at 2500 A, an extrapolation from the
label (2) requires the indicating mark (5) to be set at graduation 1.8.
03616-1
A. Current in amperes.
B. Corresponding line on the direct release scale (8).
C.14
Final visual inspection and tests
Perform the following operations before putting the circuit-breaker into service.
a) Check the following points:
– Closing pulse duration set between 0.5 and 1 s, followed by the holding current.
– Holding current value (in the case of an E type circuit-breaker) set at 5% of the closing
current value.
b) Ensure that both catches (1) of the moving contact are properly inserted in both grooves (2)
of the fork unit (3).
03617-S
c) Check that all fixing and connection bolts are correctly tightened.
d) Check that the circuit-breaker can close and open several time consecutively.
5
4
3
2
1
2500
1,8
2000
1,2
2,3
2,8
3,2
4,2
3000
3500
4000
5000
Pt. 1,8
= 2500 A
3
4
8
5
2
1
7
6
2500
1,8
2000
1,2
2,3
2,8
3,2
4,2
3000
3500
4000
5000
3
1
2
Important!
Operate the circuit-breaker to test it WITHOUT connecting it to the high voltage
circuit.
Never operate the circuit-breaker under electric load without the arc chute and the
sparks arresters fitted.
Содержание UR46-81S
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