Features and application
Pegaso indoor switchgears are designed for power distribution at the rated voltage of up to 24 kV in indoor and container industrial transformer stations. Pegaso bays can be used in separate electrical rooms as wall-mounted and free-standing units.
Advantages:
- modern switchgear apparatus in the form of rotary disconnectors and disconnecting switches with air insulation and double-throw pin-out
- small-size bays; the width of feeder bay and transformer bay is only 500 mm
- compartment-like structure of the switchgear ensures high operational safety
- the used mechanical interlock prevents incorrect switching procedures
- two-compartment bays construction allowing the primary busbars to be divided from the power cable connections compartment
- long operation due to the use of modern drives and copper power buses without the need for service and maintenance operations
- universality in designing different switchgear configurations with any number of bays
- feeder and transformer bays can be equipped with disengaging coil, allowing remote bay switch-off
- bays can be made as single units or parts of freely-configured switchgear. In addition, feeder and transformer bays can be equipped with reactance insulators cooperating with voltage signalling devices
- the switchgear has primary busbars and cable compartments, which are separated by a supporting frame with disconnector, forming a mechanical and electrical separation between these compartments.
Specification
|
Parameter |
Value |
|
Rated voltageRated voltage |
24 kV |
|
Power frequency withstand voltage - insulation to earth and between phases - across the isolating distance |
50 kV 60 kV |
|
Lightning impulse withstand voltage - insulation to earth and between phases - across the isolating distance |
125 kV 145 kV |
|
Rated frequency |
50 Hz |
|
Rated continuous current - busbars - transformer and feeder bays |
630 A 400 A |
|
Rated short-time withstand current (1 s) |
12,5 kA; 16 kA; 20 kA |
|
Rated peak withstand current |
31,5 kA; 40 kA; 50 kA |
|
Rated short-time withstand current of earthing switch circuit (1 s) |
16 kA |
|
Rated peak withstand current of earthing switch circuit |
40 kA |
|
* Internal arc resistance (1 s) |
AFL 16 kA |
|
Protection degree |
IP 4X |
Options
The following bays can be distinguished in PEGASO switchgear: feeder bay, transformer bay, measurement bay (right or left-sided), circuit-breaker bay, coupler bay (1000 mm, 2x500 mm), measurement and coupler bay, as well as bus bay.
PEGASO MV switchgears can be equipped with the following devices:
Main MV:
MV transformers:
MV fuse blocks and links:
MV lightning arresters:
Voltage signalling devices:
Circuit-breakers:
Protections:
SZR automatic control:
UPS:
PEGASO switchgear can be equipped with the following interlocks:
Mechanical interlocks:
Key-type interlocks:
Electrical interlocks:
PEGASO MV switchgears can be equipped with the following devices:
Main MV:
- two-wire rotary air disconnectors with/without earthing switch R5P, R5B, R10
- two-wire rotary air disconnecting switch with/without earthing switch: S5, ST7,5R, ST7,5L
- upper/lower earthing switch
MV transformers:
- current transformers (e.g. GS24 manufactured by RITZ)
- voltage transformers (e.g. GE24 manufactured by RITZ)
- auxiliary transformers (e.g. GZE manufactured by RITZ)
MV fuse blocks and links:
- fuse block with fuse links JT6 0.6 A
- WBP fuse block
- fuse links
MV lightning arresters:
- ASW-18N lightning arrester (manufactured by Apator SA)
Voltage signalling devices:
- WNd voltage signalling devices manufactured by Energotest Gliwice
Circuit-breakers:
- MV vacuum circuit breaker (e.g. VCB/IMS/TEL manufactured by Tavrida Electric)
- SF6 MV circuit breaker (e.g. SF1 manufactured by Schneider Electric)
Protections:
- overcurrent protection (e.g. Wic1 manufactured by Woodward)
- current transformers (e.g. WIC-W manufactured by Woodward)
SZR automatic control:
- SZR module (e.g. APZmini manufactured by Energotest-Elektropomiar)
UPS:
- UPS power supply unit (e.g. RM22 1600 kVA manufactured by Cover Partner)
PEGASO switchgear can be equipped with the following interlocks:
Mechanical interlocks:
- mechanical strand-type interlock for two AC-BLOK vacuum circuits breakers, manufactured by Apator Control (we have an industrial design registered in the Patent Office)
- mechanical interlock preventing against opening of the door when the earthing switch is open
- mechanical interlock preventing against closing the earthing switch when the disconnector / disconnecting switch is closed
Key-type interlocks:
- key-type interlock when the disconnector / disconnecting switch is open/closed
- key-type interlock when the earthing switch is open/closed
Electrical interlocks:
- electrical interlock preventing against putting the lever in the drive slot of the disconnector / disconnecting switch when the circuit-breaker is on
- electrical interlock between MV circuit breakers
Certificates and authorisations
The switchgear meets the requirements of the following standards:
- PN-EN 62271-200:2007 High-voltage switchgear and controlgear. Part 200: AC metal-enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV.
- PN-EN 62271-1:2009 High-voltage switchgear and controlgear. Part 1: Common specifications and related standards.
- PN-EN 62271-105 High-voltage switchgear and controlgear. Part 105: Alternating current switch-fuse combinations.
- PN-E-05115 AC power systems with voltage higher than 1 kV.
- has certificate no. 1010/NBR/2011.
