Switchgears for mining industry PREM-GO IV-* series
Purpose
PREM-GO IV-* flameproof distribution field is dedicated for electrical energy distribution in alternating current grids with rated frequency of 50 Hz and operating voltage 6 kV. Primarily in underground mining plants.
Application
PREM-GO IV-* flameproof distribution field is designed for methane-free and methane areas, mining headings classified under methane explosion and coal dust explosion hazard categories.
Equipment will automatically trip-off in case if allowed methane gas concentration will be exceeded.
General characteristics
Flameproof distribution field, PREM-GO IV-* is a field full compartmental in a metal flameproof enclosure, whose components are located in separate compartments of reduced metal partitions. The field is fully assembled with the exception of external connections.
The introduction of cable / wire to the inside of the cover is done by certified busbars and cable entries. Flameproof enclosure "d" provides protection against dust and water to IP 54. Flameproof distribution field PREM-GO IV-* can be configured depending on the type of equipment used, switches the main circuit.
The autonomous version predisposes the flameproof distribution field for installation in the one or multi-section distribution systems.
In order to realize the multifield and sectional distributor the following distribution field versions are foreseen: incoming, outgoing, coupling versions and on-load switch.
Features
- compact cubicle size and small dimensions,
- operational safety through the elimination of switching faults by mechanical interlocking system, between the lower earth switch and withdrawable part,
- operation surety provided by reliable vacuum or SF6 switching devices,
- fiber optic sensor arc in each compartment field,
- motorized drives of the withdrawable part (option),
- insulation shutters automatically separates the fixed contact while the withdrawable part is being retracted to the test position,full visua
- lization of monitoring the operating and emergency conditions, including the possibility to measure, record and review events,
- possibility of control by the supervision system,
- outgoing control circuits outside the switchgear by central-locking leakage protection,
- insulation resistance control medium voltage cables in the outgoing fields by locking leakage protection,
- casing compartments are mounted on hinges to facilitate opening and closing,
- industrial electroheat in casings field,
- easy and convenient access into the compartments,
- variety of modern protective relays application for example MUPASZ 710 (MUPASZ 710 plus) or multiMUZ-3.
Elewacja i przekrój pola dopływowego
- busbar
- busbar spout insulator
- contact of the tulip joint
- withdrawable part
- motor-drive mechanism (option)
- insulating moving shuteters
- current transformer
- voltage transformers
- auxiliary transformer
- earth-fault transformer
- upper earthing switch
- lower earthing switch
- drive socket upper earthing switch
- drive socket lower earthing switch
- withdrawable part operating mechanism
- end cap of cable entries
- high voltage indicator
- high voltage indicator
- fuses
- surge arrester
- bus connection cable
- optical fiber
- inspection holes
- busbar compartment casing
- rear casing connection compartment
- front casing connection compartment
- casing compartment withdrawable part
- auxiliary compartment casing
- control buttons
- busbar
- cable entries
Technical data
| Type of the switchgear | PREM-GO IV-* | |
| Rated voltage | kV | 7,2 |
| Power frequency withstand voltage | kV | 20 |
| Lightning impulse withstand voltage | kV | 60 |
| Rated current: | ||
| witch a circuit breaker witch a contactor short-time withstand current peak withstand current |
A A kA/s kA |
up to 850 up to 400 up to 25/1 up to 63 |
| Internal arc withstand current | kA/s | 25/0,3 |
| Rated frequency | Hz | 50 |
| Degree of protection | IP 54 | |
| WE type test certificate | TEST 15 ATEX 0015X | |
| Explosion proof design marking | (M1) d [ia Ma] (M1) d [ia op is Ma] I M2 Ex I Mb I M2 Ex I Mb |
|
| Dimensions of cubicles: | ||
| width [A] height [B] depth [C] |
mm mm mm |
784 1640 1376 |
| Internal Arc Classification | BFLR | |
| Loss of Service Continuity Classification | LSC2B | |
| Compliance with standards | PN-EN 60079-0, PN-EN 60079-1, PN-EN 60079-11, PN-EN 60079-28 | |
Exemplary schematic diagrams
Product card in pdf formatSwitchgears for mining industry PREM-GO IV-* series plik .pdf
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