Installation
P846/EN IN/D
MiCOM P846
(IN) 15-5
5.
RELAY MOUNTING
MiCOM relays are dispatched either individually or as part of a panel/rack assembly.
Individual relays are normally supplied with an outline diagram showing the dimensions for
panel cutouts and hole centers. This information can also be found in the product
publication.
Secondary front covers can also be supplied as an option item to prevent unauthorized
changing of settings and alarm status. They are available in size 80TE (GN0038 001) for the
P846, suitable to fit the 80TE case model.
The design of the relay is such that the fixing holes in the mounting flanges are only
accessible when the access covers are open and hidden from sight when the covers are
closed.
If a P991 or MMLG test block is to be included, it is recommended that, when viewed from
the front, it be positioned on the right-hand side of the relay (or relays) with which it is
associated. This minimizes the wiring between the relay and test block, and allows the
correct test block to be easily identified during commissioning and maintenance tests.
P0146ENc
Figure 1: Location of battery isolation strip
If it is necessary to test correct relay operation during the installation, the battery isolation
strip can be removed but should be replaced if commissioning of the scheme is not
imminent. The red tab of the isolation strip can be seen protruding from the positive side of
the battery compartment when the lower access cover is open. To remove the isolation
strip, pull the red tab whilst lightly pressing the battery to prevent it falling out of the
compartment. When replacing the battery isolation strip, ensure that the strip is refitted as
shown in Figure 1, i.e. with the strip behind the battery with the red tab protruding.
5.1
Rack mounting
MiCOM relays may be rack mounted using single tier rack frames (our part number
FX0021 001), as illustrated in Figure 2. These frames have been designed to have
dimensions in accordance with IEC60297 and are supplied pre-assembled ready to use. On
a standard 483mm rack system this enables combinations of widths of case up to a total
equivalent of size 80TE to be mounted side by side.
The two horizontal rails of the rack frame have holes drilled at approximately 26mm intervals
and the relays are attached via their mounting flanges using M4 Taptite self-tapping screws
with captive 3mm thick washers (also known as a SEMS unit). These fastenings are
available in packs of 5 (our part number ZA0005 105).
IN
Содержание MiCOM P846
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Страница 5: ...Safety Section P846 EN SS H11 SS SAFETY SECTION...
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Страница 16: ...P846 EN IT D Introduction MiCOM P846 IT...
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Страница 26: ...P846 EN TD D Technical Data MiCOM P846 TD...
Страница 38: ...P846 EN GS D Getting Started MiCOM P846 GS...
Страница 58: ...P846 EN ST D Getting Started MiCOM P846 ST...
Страница 60: ...P846 EN ST D Settings ST 4 2 MiCOM P846 ST...
Страница 78: ...P846 EN OP D Operation MiCOM P846 OP...
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Страница 106: ...P846 EN AP D Application Notes MiCOM P846 AP...
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Страница 124: ...P846 EN PL D Programmable Logic MiCOM P846 PL...
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Страница 144: ...P846 EN MR D Measurements and Recording MiCOM P846 MR...
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Страница 160: ...P846 EN FD D Firmware Design MiCOM P846 FD...
Страница 182: ...P846 EN CM D Commissioning MiCOM P846 CM...
Страница 228: ...P846 EN CM D Commissioning CM 10 46 MiCOM P846 CM...
Страница 230: ...P846 EN MT D Maintenance MiCOM P846 MT...
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Страница 238: ...P846 EN TS D Troubleshooting MiCOM P846 TS...
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Страница 252: ...P846 EN SC D SCADA Communications MiCOM P846 SC...
Страница 272: ...P846 EN SG D Symbols and Glossary MiCOM P846 SG...
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Страница 282: ...P846 EN IN D Installation MiCOM P846 IN...
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Страница 293: ...Installation P846 EN IN D MiCOM P846 IN 15 11 7 P846 CASE DIMENSIONS Figure 3 Case dimensions IN...
Страница 295: ...Installation P846 EN IN D MiCOM P846 IN 15 13 P1756ENa IN Figure 5 Model B with 32 output contacts and 24 digital inputs...
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