Product Specifications:

Electrical Core Parameters

Table

Parameter Item

Standard value

Note

Rated operating voltage

AC 380/400 V, three-phase four-wire/five-wire system

Power frequency: 50 Hz, compatible with 60 Hz

Rated Insulation Voltage

690V

Primary circuit withstand voltage: 2 kV

Single-cabinet compensation capacity

50 kvar to 3000 kvar

Single-circuit capacity: 10/15/20/30/40/50/60 kVAR, optional.

Rated short-time withstand current

15kA/30kA/50kA

Match the parameters of the front-end GGD incoming switchgear.

Protection rating

Standard configuration: IP20; sealed upgrade options: IP30/IP42.

Indoor distribution rooms commonly use IP20.

Implementation Standard

GB/T 7251.1, GB/T 15576, IEC 61439

Mandatory national standard requirements for low-voltage reactive power compensation equipment

 

Cabinet and Environmental Parameters

  1. Cabinet material 8MF Standard cold-formed steel bolted assembly, steel plate thickness 2.0 ~ 2.5mm , electrostatic powder coating for corrosion protection, 20mm Standard modular mounting holes Hongfa Shares
  2. Standard cabinet dimensions (width × Deep × High) 800×600×2200mm 1000×800×2200mm 1200×1000×2200mm
  3. Operating environment : Ambient temperature - 5℃ ~ +40℃ 24h Average temperature ≤35℃ ; altitude ≤2000m ; No corrosive gases, no severe vibrations, and no flammable or explosive dust.
  4. Internal configuration : Intelligent reactive power compensation controller, switching contactor, series reactor (harmonic suppression), self-healing low-voltage capacitor, fuse, surge arrester, grounding copper busbar

 

Application scenarios:

  1. Industrial Plant Substation : Centralized compensation on the low-voltage side of the plant’s transformers addresses the low power factor caused by inductive loads such as motors, fans, and pumps, thereby reducing or eliminating penalties for power factor charges imposed by the utility.
  2. Architectural Public Projects : Distribution rooms in office buildings, shopping malls, hospitals, schools, and residential complexes, accommodating large inductive loads from central air conditioning, elevators, and lighting.
  3. New energy support infrastructure : Reactive power compensation on the grid‑connection point and on the low‑voltage side of the energy storage converter, to stabilize the grid‑connection point voltage and reduce transmission line losses.
  4. Municipal infrastructure : Dynamic reactive power compensation for wastewater treatment plants, pumping stations, waste incineration plants, and rail transit distribution systems
  5. Old Distribution Network Renovation : Upgrade of the existing distribution room to meet power factor requirements, expansion of transformer capacity with a corresponding compensation cabinet, and adaptation. GGD Low-voltage switchgear parallel installation

 

Product Advantages:

  1. Intelligent automatic switching, energy saving and consumption reduction : The controller continuously measures the system’s power factor and automatically switches capacitor banks to maintain the power factor at 0.92 ~ 0.99  In this range, transformer losses and line voltage drops are effectively reduced, leading to savings on electricity costs.
  2. Harmonic‑resistant design ensures a longer equipment lifespan. : Optional series reactors suppress harmonics generated by nonlinear loads such as variable-frequency drives and arc welders, prevent capacitor bulging and breakdown, and reduce subsequent component replacement costs.
  3. The cabinet structure is standardized, ensuring excellent compatibility. : and GGD The distribution cabinet body features fully standardized modules and dimensions, enabling side-by-side assembly into a complete low-voltage distribution system with a neat layout and convenient installation and wiring.
  4. Scientific heat dissipation design, stable operation. : The cabinet is equipped with upward and downward convection‑type ventilation louvers, creating a natural airflow path that efficiently dissipates the heat generated by the capacitors, preventing overheating and tripping in high‑temperature environments.
  5. Comprehensive security protection : Cabinet door sealing strip, complete grounding circuit of the cabinet body, built-in discharge resistor in the capacitor, overvoltage / Undervoltage Overcurrent Phase-loss multi-protection ensures high maintenance safety.
  6. Simple operations and maintenance with high cost-effectiveness. : The fixed‑type design eliminates complex drawer components, resulting in fewer potential failure points; the components are neatly arranged, making fault diagnosis and capacitor replacement straightforward, while keeping procurement and maintenance costs low.

Keywords: GGJ

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