PRODUCTS

To be composed of:

The contactless stabilizer is mainly composed of compensation circuit, voltage regulating circuit, control circuit, input sampling circuit, output sampling circuit, Output Control Circuit, protection circuit and bypass circuit.

Operating principle

When the input voltage fluctuates or the load changes, the feedback voltage obtained by the sampling circuit, compared with the reference voltage, and then the control circuit outputs the control signal to control the components (IGBT or SCR) in the voltage regulating circuit, the compensation circuit produces compensation voltage with different polarity(＋or －) and amplitude to stabilize the output voltage. At the same time, the control circuit also controls the protection circuit and the output control circuit to produce the corresponding action.

Standard to be followed

Chinese Standard, YD/T 1270-2003 contactless compensatory AC voltage stabilizer

Product Features: 

• No carbon brush, Contactless;

• Output Voltage to be stabilized by compensatory method,

• Fast Response up to 20-100ms;

• Output voltage, stabilized voltage accuracy and protections could be set in advance;

• Output Voltages and currents could be displayed/RMS values;

• Phase A,B,C could be set together or each one separately

  i) Phase A,B,C to be set together

  To sample A,B,C voltage RMS values together, then balanced calculations; To improve A,B,C balance output by respective compensations;

  ii) Phase A,B,C, to be set each one separately

• Ensure each phase within its accuracy. Specially suit for single phase load.

• Output after voltage reach its set values;

• Load Protection: By pass output within 1 second while overvoltage or under voltage emerged; phase loss, overload, short circuit protection also available;

• Suitable for resistive, capacitive and inductive loads;

General Specifications

² Outputs

n Rated voltage: phase voltage 220V, line voltage 380V

Customized values, such as 200V,220V,400V,460V,690V,etc;

n Stable voltage accuracy: ± (1-5)% selectable (conventionally set to ± 2%)

n Response time: 20-100ms

n Waveform distortion: no additional waveform distortion (static)

n Efficiency: ≥98%

n Three-phase unbalance: three-phase voltage auto-balanced,

n Delay output: steady voltage first, then output (protect equipment from shock)

² Inputs

n Voltage Range: three-phase 304V-456V, single-phase 176V-264V

n Frequency: 47HZ-63HZ

² Protection:

n Overvoltage: output phase voltage over 10% , cut off output or uninterruptible turn by-pass

n Undervoltage: output phase voltage below 10% , cut off output or uninterruptible turn by-pass

n Phase missing: with (automatic cut off)

n Overload: electronically detected, cut off output within 3 minutes of overload

n Over current: electronic detection and circuit breaker double protection

n Short Circuit: electronic detection and circuit breaker double protection

n Bypass: uninterrupted automatic bypass

² Indications:

n Voltage: A, B, C, ABC THREE-PHASE LCD display true-effective value

n Current: A, B, C,ABC THREE-PHASE LCD display true-effective value

n Working state: Stabilized state/Mains power state

n Abnormal: overvoltage, under voltage, overload, fuse break

²Overload: 1 second of 5 times of rated current;

²Option for remote control: Equipped with RS232, which could be replaced with RS485/CAN/RJ45, meeting MODBUS-RTU protocol.

Models and their main specifications

Three Phase

Single Phase:

Order Information

While you send us one inquiry or placing an order, besides the rated capacity, let's know more your information as below:

i) Three Phase or Single Phase;

ii)Power input, three phase four wire or three phase three wire only;

iii)Power output;

iv) Please advise you stable voltage accuracy:±5%, ±2%,±1%. 

v) Your load. If your precision equipment need surge protection, peak suppression, filtering or extra isolating, please clarify;

vi) Remote control, RS232/RS485/CAN/RJ45

Retated products:

TUNNEL AUTO VOLTAGE STABILIZER