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PWBH type pole mounted low voltage reactive power automatic compensation device

Basic Information
Place of Origin: XI'AN CHINA
Certification: ISO9001
Minimum Order Quantity: 1PC
Packaging Details: Export packing
Delivery Time: 30-45 DAYS
Payment Terms: L/C, T/T, D/P, D/A, Western Union, MoneyGram
Rated Voltage: 380V±20% Rated Frequency: 50Hz
Rated Compensation Capacity: 20~1000kvar Capacitance Deviation: -5%~10%
Altitude: ≤2000 Cotrol Method: Full Phase Or Split Phase


The pole mounted low voltage reactive power automatic compensation device is installed on the  outdoor poles or brackets. The device is mainly composed of a box, self-healing capacitors, switches or contactors, lightning arresters, and circuit breakers.
The pole mounted low-voltage reactive power automatic compensation device takes the intelligent reactive power controller as the core, and uses special switching devices as the switching unit of the capacitor bank. According to the power factor of the grid, reactive power or line voltage, the capacitor is automatically switched on and off, the performance is stable. Quality is reliable.

2. Function

Used in power, machinery manufacturing, metallurgy, mining, railway, chemical, oil fields, hotels and other 380 volt power systems to increase grid power factor, reduce line losses, and improve power quality. The device uses low-voltage intelligent capacitors inside, and the structure is compact; the switch uses composite switch, and the switching current is small; the device can compensate three phases or single phase, and the capacity distribution is more reasonable.

3. Structural features

(1) The cabinet body is made of high-quality cold-rolled steel plate (or stainless steel), with good flatness, and the surface is treated with anti-rust and anti-corrosion treatment; the inner frame is made of galvanized steel sheet aluminum-zinc steel sheet to ensure better conductivity and corrosion resistance.
(2) Complete protection functions: short-circuit, overload, over-voltage, under-voltage, and lack of equal protection; various parameter settings are convenient; when an external related fault occurs, it will automatically exit operation, and automatically resume operation after power is supplied.
(3) The device has a high intelligent program, which can realize GPRS connection and realize remote monitoring.

4. Model description

E.g: PWBH0.4-30

P: Distribution network, load monitoring

W: Reactive power

B: Compensation device


0.4: System voltage (kV)

30: Device capacity (kvar)

5.Technical data

Rated voltage 380V±20%
Rated frequency 50Hz
Rated compensation capacity 20~1000kvar
Capacitance deviation -5%~10%
Altitude ≤2000
Compensation method The capacitor bank wiring adopts the compensation mode of common compensation or common division combination
Cotrol method Full phase or split phase
Switching mode Loop or code
Ability to suppress inrush current <10I
Environmental temperature category -25℃~+55℃
Dielectric strength The phase-to-phase and phase-to-ground of the main circuit is 2.5kv, 1s; the auxiliary circuit is 2.0Kv, 1s to the ground; the capacitor current generated by the power frequency steady-state overvoltage and harmonics during the operation of the device does not exceed 1.3 times the nominal capacitor current.
Insulation class Insulation resistance under normal atmospheric conditions≥4MΩ
Capacitor discharge time Three minutes after the capacitor is removed, the remaining voltage drops below 50V
Relative humidity The monthly average is not more than 90%; the daily average is not more than 95% (at 25°C)
Chemical conditions There is no corrosive gas, no conductive dust, no flammable and explosive medium in the surrounding environment
Installation There is no severe vibration and bumps in the installation site, and the installation inclination is not more than 5 degrees

Contact Details

Phone Number : +86-18740359806

WhatsApp : +8618202998636