Secheron UR46-81S, Instruction Manual

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Installation UR46-81/82S
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.
C-26
File: c-UR46-8S_inst_en.fm
C.13 Maximum current release (Id) setting
C.13.1 Direct release
The direct release may or may not be equipped with a removable core (11) according to your
specification of the release range. When the core is removed, store it in the special clip (13).
04650
C.13.2 Setting procedure
a) Remove the caps (6 & 7).
b) Loosen the lock nut (3).
c) Loosen or tighten the special nut (4) to move the indicating mark (5) to the required value.
d) Tighten the lock nut (3) and re-insert both caps (7& 6).
The direct release (1) is calibrated at the factory and adjusted either to the lowest value on the
adjustment scale or to the value requested by the customer when ordering. A label (2 & 9) shows
the correspondence between the current values and the scale (8).
Version with core
Two ranges of setting are available:
– With the core (11) inserted in the direct release (1): the setting range is, according to
label (9A), between 2000 and 5000 A, with corresponding scale (5) from 1.1 to 4.8.
– With the core (11) removed from the direct release (1): the setting range is, according to
label (9B), between 4050 and 8000 A, with corresponding scale (5) from 1.0 to 4.3.
Example: to set the maximum current release value Id at 6000 A, an extrapolation from the
label (9) requires the indicating mark (5) to be set at 2.4 on the scale with the core (11) removed.
03620-1
A. Values with the core inserted (in amperes corresponding to the beginning, middle and end of
the scale).
B. Values with the core removed (in amperes corresponding to the beginning, middle and end of
the scale).
5
4
3
2
1
11
1
1
13
11
1
5
4
3
2
1
A B
Pt. 1,8
= 2450 A
3
4
8
5
9
1
7
6
11