TBBZ High‑voltage Automatic Reactive Power Compensation Cabinet, 6kV‑10kV Capacitor Compensation Device

The TBBZ‑series high‑voltage automatic reactive‑power compensation device monitors grid‑side & load‑side operating conditions for 6kV‑10kV busbars.
The control system automatically switches capacitor banks to provide real‑time reactive‑power compensation, raising the system power‑factor above 0.9.

It optimizes power quality, cuts down active‑power losses, lowers electricity costs, and improves the transmission capacity of your power distribution network.

Model example：TBBZ‑10‑1500(600 900)‑AK
10kV rated voltage; total compensation capacity: 1500kVar; 2 groups:600kVar 900kVar; single‑star connection, open‑delta voltage‑protection.

1. Altitude: ≤ 1000 m above sea‑level
2. Ambient temperature: ‑25℃ ~ 55℃
3. Relative humidity: ≤ 85%
4. Installation site: No explosive‑risk substances, no corrosive gas, no conductive dust, no steam or heavy mould.

1. Over‑voltage endurance capacity
Stable long‑time operation at 1.1× rated‑voltage; continuous operation under transient‑over‑voltage up to 1.3× capacitor rated‑current.
2. Vacuum‑contactor switching
Vacuum contactors for capacitor switching, suitable for frequent switching‑on & switching‑off cycles.
3. Fast capacitor discharge circuit
Discharge coils fitted for every capacitor branch; residual voltage drops below 50 V within 5 seconds after disconnection.
4. Comprehensive multi‑protection
Relay‑based or microprocessor protection for each capacitor branch, including over‑current, voltage‑unbalance, under‑voltage and over‑voltage protection. Faulted branch can be isolated without shutting‑down the rest of the compensation system.
5. Surge‑protection design
Each capacitor circuit is equipped with surge arresters for over‑voltage & lightning‑surge protection.
6. Intelligent monitoring & communication
Large LCD controller displays real‑time voltage, current and power‑factor. Built‑in RS232 / RS485 interface supports remote "four‑remote" monitoring function.
7. Optional harmonic‑suppression reactor
Series reactors can be configured to suppress inrush‑current or filter specific‑order harmonics.