DVCAS — modular and compact secondary distribution switchgear up to 38.5 kV, 630 A
DVCAS is modular and compact gas-insulated secondary distribution switchgear up to 38.5 kV and 630 A. The units are designed for installation inside wind turbines and also work in solar plants, energy storage, data centres and traction lines.
- Rated voltage
- 36 / 38 / 38.5 kV
- Rated frequency
- 50 / 60 Hz (38.5 kV — 50 Hz)
- Rated current
- 630 A (function S — 1250 A)
- Short-time withstand current
- 20 kA, 3 s; 25 kA, 1 s
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
DVCAS provides secondary distribution at voltages up to 38.5 kV in modular and compact versions. The units work in wind and solar plant networks, including those with energy storage, in distribution networks, data centres, oil and gas facilities, commercial and industrial buildings, metro systems, and tram and railway lines. The dimensions are chosen for installation inside a wind turbine, and no adjustment on site is needed. DVCAS units are installed in more than 18,000 wind turbines with a total capacity of over 40,000 MW.
All MV equipment is enclosed in an earthed stainless steel tank filled with SF6 and sealed for life, which the catalogue states as 30 years. The series is made of four functional modules. I is the line function with a three-position load break switch rated 630 A (classes M1/E3, earthing switch M0/E2). D provides transformer protection by a 630 A vacuum circuit breaker (classes E2/M1, sequence O–0.3 s–CO–15 s–CO) with a three-position disconnector and a VIP relay. Module 0 gives direct cable connection to the busbars, and S contains a three-position disconnector and 1250 A busbars for lines with current above 630 A. Compact units come in the configurations ID, IID, D0 and others, and modular ones are supplied as separate functions and their combinations.
The versions are compact, compact extensible, modular, outdoor and Harsh for severe environments. The outdoor versions ID, IID, IIID, IIDI, DIID, IIDD and DDD have a sealed carbon steel enclosure with C4H coating and degree of protection IP54. The units are serviced from the front only, have mechanical and electrical interlocks and are tested for internal arc resistance per IEC 62271-200 with gas exhaust upward or downward. Height is 1800 mm and depth 980 mm. Module I with a width of 422 mm weighs 260 kg, and the compact IID with a width of 1320 mm weighs 600 kg. Cables are connected by screened T-type connectors to type C bushings with an M16 bolt.
Protection and automation are built on VIP 400/410 relays powered from current transformers, MiCOM P116 and Easergy P3. They are supplemented by Flair short-circuit current indicators, VD23 voltage presence relays and a PS100 backup power supply. Control is manual, local or remote, configured at the factory or on site. Each unit undergoes a factory leak test, a dielectric test and contact resistance measurement, and the results are included in the test report.
The units are certified to IEC 62271-1, -100, -102, -103, -200 and IEC 60529, they comply with IEEE/ANSI standards and hold UL certification. Production is located in Mungia (Spain), the quality system is certified to ISO 9001, environmental management to ISO 14001, and stainless steel welding to ISO 3834-2.
Technical specifications
| Rated voltage | 36 / 38 / 38.5 kV |
|---|---|
| Rated frequency | 50 / 60 Hz (38.5 kV — 50 Hz) |
| Rated current | 630 A (function S — 1250 A) |
| Short-time withstand current | 20 kA, 3 s; 25 kA, 1 s |
| Peak withstand current | 50 / 52 / 62.5 / 65 kA |
| Power frequency withstand voltage | 70 / 70 / 80 kV |
| Lightning impulse | 170 / 170 / 180 kV |
| Internal arc resistance | 16 / 20 / 25 kA, 1 s, IAC AFL / AFLR |
| SF6 overpressure at 20 °C | 0.3 bar |
| Degree of protection | IP65 (MV tank); IP3X (LV compartment); IP54 (outdoor version) |
| Operating temperature | −25 to +40 °C |
| Installation altitude | up to 2000 m |
| Unit height × depth | 1800 × 980 mm |
Request a price and lead time
DVCAS — modular and compact secondary distribution switchgear up to 38.5 kV, 630 A. We reply within one business day.
Or email sales@usk.ua or call 044 339-50-20.
Customs codes
| UKTZED (Ukraine) | 8537 20 91 00 |
|---|---|
| HS, 6 digits | 8537 20 |
| CN (EU) | 8537 20 91 |
| HTSUS (USA) | 8537 20 00 20 |
| China customs tariff | 8537 20 90 00 |
Codes are for reference: the final code is determined at declaration for the specific model.
Questions and answers
Which functions are included in the DVCAS series?
Line function I with a 630 A load break switch, transformer protection D with a vacuum circuit breaker, direct connection 0, and function S with 1250 A busbars.
Is there an outdoor version of DVCAS?
Yes, the versions ID, IID, IIID, IIDI, DIID, IIDD and DDD have a carbon steel enclosure with C4H coating and degree of protection IP54.
In what conditions does DVCAS work?
The units are designed for temperatures from −25 to +40 °C and installation altitude up to 2000 m. Internal arc resistance is 16, 20 or 25 kA for 1 s.
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