HV Capacitor Bank
SGCB series automatic high-voltage capacitor banks are divided into two main types:
Transformer test capacitor bank
Composed of shunt capacitors, pneumatic disconnectors, pneumatic earthing switches, current transformers, connecting busbars, post insulators, and a computerized central control system. It provides adjustable capacitive reactive current at different voltages and capacities to compensate inductive reactive current during transformer and shunt reactor load tests, so the test supply outputs mainly active current.
Synthetic circuit test capacitor bank
Composed of a main capacitor tower, a TRV frequency-tuning capacitor tower, and an arc-extension circuit capacitor tower. It is the core energy storage equipment for synthetic tests of high-voltage circuit breakers, GIS, and other switchgear. It supplies pre-charge injection voltage and generates the required transient recovery voltage (TRV).
Features
Transformer test capacitor bank
- Wide adjustment: test voltage 3-252 kV;
Capacity 10–1200 Mvar
- High insulation: oil-immersed all-film capacitors, grading rings, and insulators
- Low loss: mainly reactive compensation, very low active loss
- Modular tower structure: easy transport and rapid on-site assembly
- Pneumatic switching: PLC/programmable module control, remote monitoring, effective isolation
- Multi-busbar access and customized design
Synthetic circuit test capacitor bank
- High impulse withstand: rated voltage typically 100–1200 kV
- Low inductance, high energy density, high du/dt capability
- Wide adjustment through series/parallel switching between layers
- Modular tower layers for on-site lifting and assembly
- Coaxial/symmetrical layout to reduce inductance and preserve high-frequency waveforms
- Core function: pre-charged to hundreds of kV and discharged in microseconds to produce standard TRV waveforms
Catalogue
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2026-09-18 SGCB Series Capacitor Bank Technicial Data.pdf
끂29 940.59 KB -
2026-09-04 SGIS Series Single-pole isolating switch Technicial Data.pdf
끂38 1.1 MB
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