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Power Quality & DC

HJ-PFC Series Automatic Capacitor Bank

Name: HJ-PFC Series Automatic Capacitor Bank
Brand: HJATIS

The HJ-PFC Series Automatic Capacitor Bank is a microprocessor-controlled reactive power compensation system for low-voltage networks. It automatically tracks load fluctuations and switches capacitor steps to improve power factor, reduce line losses, and free transformer capacity. Suitable for industrial plants, commercial complexes, and water treatment facilities. Available in standard and custom configurations.

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HJATIS

PUBLISHED PRODUCT DATA

Catalogue ratings and configurations.

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Technical Specifications

Technical Specifications
Electrical Parameters
Standards referenced in the source catalogue	IEC 61439-1 / IEC 61921 / GB/T 15576
Rated Working Voltage	Up to 450V AC (Custom 690V available)
Rated Grid Frequency	50 Hz / 60 Hz
Total Compensation Capacity	Typically 150kVAr to 1000kVAr per cabinet (Expandable via parallel cabinets)
Switching Elements	Capacitor-Duty Contactors / Thyristors (for dynamic loads)
Switching Response Time	≤ 20ms (Thyristor) / 1~60s adjustable (Contactor)
Inrush Current Limitation	< 25 In
Detuned Reactor Factor	7% (for 5th/7th harmonics) or 14% (for 3rd harmonics)
Data Communication	RS-485 (Modbus) / GPRS module optional
Enclosure Protection Degree	Standard IP30 (Customized IP40/IP54 available)

CONFIGURATION

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ParameterCatalogue indicationProject input required

01Rated Working VoltageUp to 450V AC (Custom 690V available)Specify system voltage (e.g., 400V or 690V)

02Total Compensation CapacityTypically 150kVAr to 1000kVAr per cabinet (Expandable via parallel cabinets)Required reactive power (kVAr) and number of cabinets

03Switching ElementsCapacitor-Duty Contactors / Thyristors (for dynamic loads)Select contactor or thyristor based on load type

04Switching Response Time≤ 20ms (Thyristor) / 1~60s adjustable (Contactor)Specify required response time for dynamic or static loads

05Detuned Reactor Factor7% (for 5th/7th harmonics) or 14% (for 3rd harmonics)Specify harmonic environment (e.g., 5th/7th or 3rd)

STANDARDS & REPORTS

Standards and product documents.

Applicable references: GB/T 15576 and IEC 61921 / IEC 61439-1 (assembly enclosure; verify). Ask for the edition and reports covering the model offered; a standard number alone does not confirm product compliance.

PRODUCT DOCUMENTSProduct documents available

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APPLICATIONS

Questions for your application.

Industrial power distribution

For compensation equipment, what do the load measurements show? Include harmonic levels, power factor and the operating range.

Substation auxiliary power

For a DC supply, which loads must remain powered and for how long? Send the DC load list and battery duty.

TECHNICAL LIBRARY

Product documents

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All documents

Test report2021

HJ-PFC — Test report

Reported model GGJ

400 V / 60-440 kvar / 68.9-505 A / 15 kA

Report no.: 02401-2111925793-S
Test basis: GB/T 15576-2020

Tests on the stated capacitor-bank assembly. Not evidence for an active harmonic filter.

62 pages·28.6 MB·English guide + Chinese original

Download PDF Open PDF

The English guide is prepared by HJATIS; it is not a laboratory translation or an IEC certificate. Results apply to the tested sample and configuration. The original report and its stated standard editions govern.

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