WEBTEC RMS Mors Smitt 2V75 Bedienungsanleitung
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2V75 User Guide
Metrosil Module
RMS Mors Smitt
Advanced Protection Devices
User Guide
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2V75
User Guide
About This Manual
This User Guide covers all 2V75 relays manufactured from May 2023. Earlier products do not
necessarily incorporate all the features described. Our policy of continuous development means that
extra features & functionality may have been added.
The 2V75 User Guide is designed as a generic document to describe the common operating
parameters for all relays built on this platform.
The copyright and other intellectual property rights in this document, and in any model or article produced from
it (and including any registered or unregistered design rights) are the property of RMS Mors Smitt. No part of
this document shall be reproduced or modified or stored in another form, in any data retrieval system, without
the permission of RMS Mors Smitt, nor shall any model or article be reproduced from this document without
consent from RMS Mors Smitt.
While the information and guidance given in this document is believed to be correct, no liability shall be
acceptedfor any loss or damage caused by any error or omission, whether such error or omission is the
result of negligence or any other cause. Any and allsuch liabilityis disclaimed.
Contact Us
RMS Mors Smitt
19 Southern Court • Keysborough 3173 • AUSTRALIA
Phone 61 3 8544 1200
Email sales.rms@wabtec.com • Web http://www.morssmitt.com/rms
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Contents
Technical Bulletin ..................................................................................................................................4
User Guide ............................................................................................................................................4
Modules with Internal Shunt Wiring.......................................................................................................6
Modules Suitable for External Shunt Wiring..........................................................................................6
Safety Section .......................................................................................................................................7
Unpacking..............................................................................................................................................8
Dimensions............................................................................................................................................9
Typical Rack Mounting with 2V75 mounted into a 19” sub rack frame with rack mount bracket........10
Typical surface mounting arrangement with surface mount bracket...................................................11
Example of Rack Mounting Installation...............................................................................................12
Equipment Operating Conditions ........................................................................................................16
Equipment Connections ......................................................................................................................16
Decommissioning & Disposal..............................................................................................................17
Mechanical Inspection.........................................................................................................................18
Contents .......................................................................................................................... 3
Documentation................................................................................................................ 4
Introduction..................................................................................................................... 5
Typical Connection Diagrams........................................................................................ 6
Installation....................................................................................................................... 7
Maintenance.................................................................................................................. 18
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Documentation
Technical Bulletin
The detailed technical attributes, functional description & performance specifications for the 2V75
are described in the product Technical Bulletin.
The order of precedence for product information is as follows:
•Technical Bulletin
•User Guide
User Guide
This User Guide covers all 2V75 relay versions & describes the generic features & attributes
common across all versions.
Different relay versions are required to cater for varying customer requirements such as auxiliary
voltage range, I/O configuration, case style, relay functionality etc.
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Introduction
The 2V75 Metrosil module is designed for application with high impedance differential protection
schemes.
An external Metrosil module having a nonlinear resistance characteristic is required for each phase
element to limit the peak voltage appearingacross the secondary differential circuits under internal fault
conditions.
The Metrosil module may also be fitted with resistors either for series connection to establish the
stabilisation voltage of the high impedance scheme or shunt connection to alter the high impedance
scheme sensitivity.
The 2V75 Module provides a compact, simple & cost effective means of fitting a pre-wired Metrosil &
resistor combination into protection panels employing high impedance differential schemes.
Mounting is achieved by first fitting a special panel to the front of the cubicle. This panel is suitable for
19 inch rack or flush mounting.
TheseparateMetrosilmoduleistheninstalledfromtherearofthecubicle&latchedontotheself-aligning
rails on the front rack mounting panel. Retention screws are provided to lock the Metrosil module in
place.
The Metrosil module may, alternatively, be surfacemounted in the rear of the cubicle using the surface
mount bracket.
Heavy duty screw terminals are provided on the rear of the Metrosil module to suit ring or crimp lug
terminals. Internal wiring utilizes 2.5mm2cable.
The rear terminal door may be swung open to access the stabilizing resistors (where fitted) to allow
adjustment.
The completed installation is compact while providing safety isolation, the desired level of ventilationfor
the stabilizing resistors & a means of simple adjustment.
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Typical Connection Diagrams
Modules with Internal Shunt Wiring
Modules Suitable for External Shunt
Wiring
Note: Internal shunt wiring is only available on
variants with a Metrosil.
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Installation
Safety Section
This Safety Section should be read before commencing any work on the equipment.
The information in the Safety Section of the product documentation is intended to ensure that
products are properly installed and handled in order to maintain them in a safe condition. It is
assumed that everyone who will be associated with the equipment will be familiar with the contents
of the Safety Section.
Explanation of Symbols & Labels
The meaning of symbols and labels which may be used on the equipment or in the product
documentation, is given below.
Caution: refer to product information
Caution: risk of electric shock
Functional earth terminal
Note: this symbol may also be used for a
protective/safety earth terminal if that terminal
is part of a terminal block or sub-assembly
eg. power supply.
!
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Unpacking
Upon receipt inspect the outer shipping carton or pallet for obvious damage.
Remove the individually packaged relays and inspect the cartons for obvious damage.
To prevent the possible ingress of dirt the carton should not be opened until the relay is to be used.
Refer to the following images for unpacking the relay:
Outer packing carton
showing shipping documentation pouch.
Address label on top of carton.
Inner packing carton with lid open showing
protective foam insert.
Panel mounting adapter is at the top.
1 x Front panel
4 x front panel locating thumb screws
1 x panel mount kit
1 x panel mount kit self threading screws
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Dimensions
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Typical Rack Mounting with 2V75 mounted into a 19” sub rack frame with rack mount
bracket
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