Accessories - ABB Tmax T7 Operating Instructions Manual

4.

ACCESSORIES

4.1. External neutral
This is a current sensor for the external neutral pole of the circuit-breaker, designed to provide neutral protection for three-pole
circuit-breakers. Further details about connection of the external neutral are available from the website http://www.abb.com/
abblibrary/ DownloadCenter/ in document 1SDH000529R0513.
4.2. SGR sensor
SGR is a single-pole current sensor for earth fault protection with external sensor (Gext), available for the LSIG version of PR332/P
and PR333/P releases.
The presence, size and protection parameters of protection Gext must be selected when the release is configured (consult the
description of protection Gext in this manual). Further details about sensor connection are available in the website http://www.
abb.com/abblibrary/DownloadCenter/ in document 1SDH000460R0507.
IMPORTANT: Sensor SGR (and the relative Gext protection) are an alternative to sensor Rc (and relative protection).
4.3. RC toroid
RC is the external residual current sensor for protection Rc, available for the LSIG and LSIRc versions of PR332/P and the LSIG
version PR333/P releases.
Module PR330/V and the specific Rating Plug Rc must be present in order to install this sensor (consult the description of pro-
tection Rc in this manual).
Further details about sensor connection are available in the website http://www.abb.com/abblibrary/DownloadCenter/ in docu-
ment 1SDH000529R0514.
IMPORTANT: Sensor Rc (and the relative protection) are an alternative to sensor SGR (and relative Gext protection).
4.4. Rating Plug
The rating plug defines the rated current In, which is essential for regulating the protections. This is because the
regulation of all the protections refers to In (e.g.: I1= 0.4 xIn).
The rating plug is installed in the protection release, on a dedicated front connector and is available to the user.
The protection release can be equipped with various different Rating Plug models, up to value Iu (uninterrupted
rated current Iu of the CB given on the rating plate of the front guard).
Example: CB E1B800 has Iu= 800 A, and can be fitted with a rating plug with In≤ 800A.
The module is interchangeable, with the protection release off and the CB open.
The protection release continuously checks for the presence of the rating plug and signals its absence or any assembly errors.
WARNING: Replacement of the rating plug with the protection release on or the CB closed could lead to faulty
relay operation or undesired opening of the CB.
4.5. PR030/B
PR030/B is an external unit allowing the protection release to be energized so that Installation, Autotest and
Trip Test can be performed, along with verifications with the CB open. The unit is connected to the protection
release by means of the front service connector.
4.6.
PR010/T allows the parameters and logs recorded by the protection release to be verified. It also allows the
operation of the thresholds and trip times of protection functions L-S-I-G to be checked.
The unit is supplied in a case containing the connection cables, external power supplier and rechargeable
batteries, cable and SW for PC.
The SW in the PC allows several files corresponding to the devices with which it is possible to interface, to
be loaded into PR010/T. It also allows test reports to be downloaded. This means that the corresponding
files must be uploaded before PR010/T can be used with the protection release. The unit is connected to the
protection release by means of the front service connector via a dedicated cable.
Consult the Operation Manual of the unit (RH0025) for further details.
B0431
Model
PR010/T
B1751
Apparatus
Emax X1-Tmax T7-Tmax T8
1SDH000587R0002
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