Code and Implication

Application

ZHIMING  brand of the ZM-SVG Static Var Generator is an advanced reactive power compensation device that utilizes modern power electronics and high-speed DSP (Digital Signal Processing) technology. It is designed to provide precise and dynamic reactive power support for improved power quality and system stability.
The device consists of two main components: the reference current detection circuit and the compensation current generation circuit.

• The reference current detection circuit continuously monitors the line current in real time. It converts the analog current signals into digital form and transmits them to the DSP.
• The DSP processes the signals, separating harmonic components from the fundamental current. Based on system requirements, it generates PWM control signals.
• These signals are sent to the compensation current generation circuit, which drives IGBT or IPM power modules to produce a reactive compensation current matching the system’s needs.

The ZM-SVG injects this reactive current into the power system, dynamically adjusting to maintain voltage stability, reduce power losses, and improve power factor.
This solution is ideal for industries with rapidly changing load conditions or strict power quality requirements.

Technical Features

Rated Capacity	35kvar	50kvar	75kvar	100kvar
Rated voltage	AC380V±15%/AC690V±15%
Electrical Wiring	Three-Phase three-wire,three-phase four-wire
Capacitor bank control mode	Node Control: +1212 inputs, outputs; communication and control: RS485 connection, MODBUS communication protocol
Compensation settings	Reactive power compensation, phase unbalance, harmonic filter set
Protection	Voltage protection, load over-current protection, and over-current compensation system voltage protection and DC voltage protection
Response time	≤10ms
Device power loss	Rated for full-load operation, the loss does not exceed 2%of the point power

Main Technical Data

Rated voltage: 230VAC，250VAC，400VAC，415VAC, 450VAC，525VAC， other special voltage, please note it.
Rated capacity: 1~50kvar
Rated frequency: 50Hz or 60Hz
Capacity tolerance: -5~+10%
Loss Angle Tangent( Power Frequency Rated Voltage ): tgδ≤0.01 at 20°C
Anti-voltage: between two poles 2.15 times rated voltage is 10s, between two poles 3kV, please choose the highest value 10s, there is no permissibility puncture and Flash over
Max permit over voltage: 1.1 times rated voltage, the high permit over voltage is not more than 8 hours within 24 hours, 1.15 times rated voltage, it is not more than 30 minutes within 24 hours, 1.2 times rated voltage, it is not more than 5 minutes, 1.3 times rated voltage, it would not be more than 1 minute.
Max permit over current: it is permitted that the overcurrent is not more than 1.3 times the rated current. Interim overcurrent, it should consider overvoltage， capacity positive tolerance, and harmonic effect. Interim over current is not more than 1.43 times rated current.
Discharge property: the left voltage will reduce from √2 Un to below 50V within 3 minutes when the power is cut off.

Product Size

Note: Other special specification models are supplied according to user requirements.