Secheron UR46-81S, Инструкция по эксплуатации

Страница: 59 / 68

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: g-UR46-8S_options_en.fm
G-59
UR46-81/82S Options
G.3 Manual tripping device: M3 type
Sécheron’s reference of the complete kit : SG104226R00500.
G.3.1 Description
The circuit-breaker can be manually tripped by pushing the rod (1).
Pressure on the rod (1) causes the plate (2) to rotate, which lifts the fork (3), and releases the
moving contact (4).
04651-S
Note! The force F needed to perform a manual release is 70 N. The stroke of the rod (1) until the
release point is 13 mm, on a total possible stroke of 20 mm.
G.3.2 Maintenance - J clearance
J = 1,0
±0.25
mm
Note! This measurement is taken with the circuit-breaker closed.
Measure the J clearance between the fork (3) and the plate (2), using a feeler gauge. If needed
adjust the J clearance.
Adjustment
a) Loosen the screw (7).
b) Rotate (8) the shaft (2) until the proper J clearance is obtained.
Note! The stroke (K) must be of 17± 2 mm.
c) Tighten the screw (7).
Important!
When the circuit-breaker trips following a manual release, the fork (3) remains in
closed position and need to be reset (18) to its open position by giving an “OFF”
order to the closing coil.
2
3
2
1
5
18
4
8 7
2
K
F
Important!
After adjustment, at least two open/closing operations must be performed prior to
rechecking the clearance to check that nothing interferes with the movement of the
fork (3) as well as with its hooking on the catch (5).