Secondary distribution switchgears type UNIPANEL

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Purpose

Distribution of three - phase alternating current electrical energy with nominal frequency 50 Hz and nominal voltage up to 24 kV.

Application

  • in electricity distribution networks and industrial plants,
  • in secondary distribution,
  • in industrial plants,
  • in public buildings,
  • in and distribution - transformer transportable stations.

General characteristics

  • metal enclosed, with a single system of busbars,
  • cubicles fulfill the requirements of standards on internal arc protection,
  • manufactured in high class numerically controlled machining centers.

Features

  • small overall dimensions,
  • possibility of closing and opening of the disconnector with motor drive mechanism,
  • the design switchgear provides safety by performing connecting processes only with closed doors,
  • guarantee of proper switching operation owing to the system of interlocks eliminating faults,
  • withstand for internal arcing fault,
  • safety for the operating staff,
  • possibility of carrying out repair and maintenance works within the unit without a need to de-energise the bus bars of the switchgear,
  • high voltage indication in each cubicle,
  • possibility of quick replacement the circuit-breaker mounted on a truck,
  • convenient access to connect cables and apparatus,
  • minimal inspection and maintenance requirements,
  • environment friendly production and operation,
  • producer's professional service,
  • perfect quality finish (painted or galvanized),
  • all kinds of cubicles: incoming, outgoing, transformer, measurement and coupling allows to produce switchgear with any primary circuit configuration
  • easy logic for connectors operation,
  • adjustment to Client's individual needs,
  • switchgear can be equipped with any control and connecting devices to meet Client's requirements.

Characteristic cubicles of the switchgears

Front view and cross-section of the measuring cubicleFront view and cross-section of the measuring cubicle Front view and cross-section of the switch disconector cubicleFront view and cross-section of the switch disconector cubicle 

Front view and cross-section of the circuit breaker cubicleFront view and cross-section of the circuit breaker cubicle

  1. Busbars
  2. Pressure relief flaps
  3. Swith-disconnector
  4. Voltage transformers
  5. Fuses
  6. Current transformers
  7. Circuit breaker
  8. Earthing switch

Technical data

Type of the switchgear UNIPANEL
Rated voltage kV 12 17,5 24
Power frequency withstand voltage kV 28 38 50
Lightning impulse withstand voltage kV 75 95 125
Rated current:     
normal 
short-time withstand current
peak withstand current
A
kA/s
kA
up to 1250
up to 21/3
up to 50
Internal arc withstand current kA/s up to 20/1
Rated frequency Hz 50
Degree of protection   IP 4X
Dimensions of cubicles:     
width [A]
height [B]
depth [C]
mm
mm
mm
375 ÷ 900
1705
1080 + 90
Internal Arc Classification   AFLR
Partition class   PM
Loss of Service Continuity Classification   LSC2A
Compliance with standards   PN-EN 62271-200; PN-EN 62271-100; PN-EN 62271-103; PN-EN 62271-105; PN-EN 60529; PN-EN 62271-1

Exemplary schematic diagrams

Product card in pdf formatSecondary distribution switchgears type UNIPANEL plik .pdf

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+48 63 24 66 348

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