HT Capacitors
HT Capacitors
Introduction
Most of the apparatus and loads connected to the electrical power system consume both active and reactive (inductive) power. Some examples of such components are transformers, transmission and distribution lines, induction motors, rectifiers, induction furnaces, etc. The most economical method of reducing reactive power consumption in electrical power systems is by installing HT capacitor banks. This method is called reactive power compensation.
The capacitor injects reactive power into the system, thus reducing the load in the entire transmission and distribution system. The advantage of reactive power compensation was realized early and today, most power utilities as well as large consumers of electrical power are installing capacitor banks in their systems.
Salient Features:
- Impregnated capacitor unit — CHD – The CHD type is a single-phase power capacitor of the all-film type, with low dielectric losses and long service life.
- Different fuse technologies – ABB capacitor units are available with all types of fuse technologies – internal fuses, external fuses or fuseless.
- The ABB capacitor unit is designed for heavy duty operation in shunt, harmonic filter, series capacitor, SVC and HVDC applications in all climatic conditions.
- ABB HV Capacitors are designed in both single-phase and three phase with low dielectric losses and long service life.
- The edges of the electrode foils are folded, enabling higher electrical stress.
- The capacitor units have an extremely low failure rate and high reliability.
Range:
Output: 100 Kvar to 600 Kvar of Single unit
Voltage: 1kV 20kV, 50/60Hz
Phases: Single Ph & Three phase
Specifications:
AC single-phase CHD type Capacitor |
CHDB Internally Fused |
CHDE Externally Fused |
CHDF Fuseless |
Power (50 Hz) |
100 – 1,200 kvar |
100 – 500 kvar |
300 – 1,200 kvar |
Power (60 Hz) |
100 – 1,400 kvar |
100 – 600 kvar |
300 – 1,400 kvar |
Voltage |
1 – 15 kV |
1 – 20 kV |
1 – 20 kV |
Max current |
180 A |
60 A |
180 A |
CHD (Three-Phase) |
Parameters |
Power |
100 to 600 kvar |
Voltage range |
1-20 kV |
Frequency |
50-60 Hz |
Current |
Maximum 110 A |
Dielectric |
Polypropylene film |
Impregnant |
Non-PCB |
Discharge resistors |
Built-in |
Losses |
≤ 0.2 W/kvar including resistors |
Operating temperature |
-10/+50°C |
Location |
Indoor or outdoor |
Altitude |
≤ 1,000 m above sea level |