SPCS-27 — solid insulated vacuum capacitor switch 15.5–27 kV
SPCS-27 is a vacuum switch for capacitor banks on 15.5 and 27 kV overhead lines, with solid epoxy insulation and a magnetic actuator. Rated current is 200 A, mechanical life 50,000 operations, and the ETCAP121 controller switches the bank by voltage, reactive power or schedule.
- Versions
- 1-phase 15.5 and 27 kV; 3-phase 27 kV
- Rated current
- 200 A
- Short-time withstand current
- 4.5 kA, 1 s
- Making capacity
- 15 kA (peak)
Price, availability and lead time on request. We help with analogue selection, customs clearance and delivery.
Description
SPCS-27 switches capacitor banks on overhead lines and regulates reactive power in unstable distribution networks. The device is made in single-phase and three-phase versions and is designed for the heavy duty of frequent capacitive current switching. The model was developed in 2012–2013. KERI carried out type tests to IEEE C37.66, and the switch meets the highest category for restrikes.
The drive is built on a permanent magnet actuator. Magnetic holding fixes the contacts faster and more precisely than mechanical latches and requires no maintenance. The arc is extinguished by vacuum interrupters embedded in epoxy bushings, and the vacuum technology is rated for 50,000 trouble-free mechanical operations. The bushings made of hydrophobic cycloaliphatic epoxy resin HCEP work in heavily polluted areas and resist surface tracking, ultraviolet radiation and vandalism, and the creepage distance meets ANSI. The tank and the control cabinet are stainless steel, with no oil or SF6. A manual trip lever is provided for emergencies.
Single-phase versions are rated for 15.5 and 27 kV, the three-phase version for 27 kV. Rated current is 200 A, frequency 50/60 Hz. Short-time withstand current is 4.5 kA for 1 s, making capacity 15 kA (peak). The power frequency withstand voltage under rain, according to the manufacturer's table, is 45 kV. The control circuits are powered from 110–220 V AC or 24 V DC, operating temperature is −25…+70 °C, and the maximum number of operations is 10,000.
The switch is equipped with the microprocessor controller ETCAP121 for feeder automation. It measures three-phase voltages and currents, controls the bank automatically or manually and switches it by line voltage, reactive power or a schedule with four annual programs. From the load profile and the event history the controller analyzes the operation of the line. Communication runs over DNP 3.0, MODBUS and IEC 60870-5-101/104.
SPCS-27 is mounted on overhead line poles together with capacitor banks. The device maintains voltage and power factor and reduces losses in distribution networks. It contains no gas or oil, so there is nothing on the pole to top up or check for leaks, and the condition of the device is visible from the controller data.
Technical specifications
| Versions | 1-phase 15.5 and 27 kV; 3-phase 27 kV |
|---|---|
| Rated current | 200 A |
| Short-time withstand current | 4.5 kA, 1 s |
| Making capacity | 15 kA (peak) |
| Service life | 50,000 mechanical operations without maintenance; 10,000 max. |
| Drive | magnetic actuator |
| Controller | ETCAP121 |
| Temperature | −25…+70 °C |
| Standard | IEEE C37.66 (highest category for restrikes) |
Request a price and lead time
SPCS-27 — solid insulated vacuum capacitor switch 15.5–27 kV. We reply within one business day.
Or email sales@usk.ua or call 044 339-50-20.
Customs codes
| UKTZED (Ukraine) | 8535 30 10 00 |
|---|---|
| HS, 6 digits | 8535 30 |
| CN (EU) | 8535 30 10 |
| HTSUS (USA) | 8535 30 00 80 |
| China customs tariff | 8535 30 00 00 |
Codes are for reference: the final code is determined at declaration for the specific model.
Questions and answers
Which versions of SPCS-27 are available?
Single-phase for 15.5 and 27 kV and three-phase for 27 kV. The rated current of all versions is 200 A.
Which standard does the capacitor switch comply with?
KERI carried out type tests to IEEE C37.66, and the device meets the highest category for restrikes. Withstand current is 4.5 kA for 1 s.
By which parameters does the controller switch the bank?
ETCAP121 switches the capacitor bank by line voltage, reactive power or schedule. Communication with SCADA runs over DNP 3.0, MODBUS and IEC 60870-5-101/104.
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