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Product Title

GGJ Low-voltage Reactive Power Compensation Cabinet

GGJ Low-voltage Reactive Power Compensation Cabinet: Integrated Solution for Harmonic Mitigation and Intelligent Reactive Power Compensation. The GGJ low-voltage reactive power compensation cabinet is an intelligent reactive power compensation device specifically designed for the actual harmonic conditions of power grids. It integrates power electronics technology and intelligent control technology. On one hand, it effectively solves the problem of automatic switching reactive power compensation of shunt capacitors under harmonic conditions; on the other hand, it can filter harmonics according to user requirements, clean the power grid environment, reduce losses, and eliminate harmonic hazards...
GGJ Low-voltage Reactive Power Compensation Cabinet

Product Details

Product Details

GGJ Low-voltage Reactive Power Compensation Cabinet

GGJ Low-voltage Reactive Power Compensation Cabinet: Integrated Solution for Harmonic Mitigation and Intelligent Reactive Power Compensation

GGJ low-voltage reactive power compensation cabinet is an intelligent reactive power compensation device specifically designed for the actual harmonic conditions of power grids. It integrates power electronics technology and intelligent control technology. On one hand, it effectively solves the problem of automatic switching reactive power compensation of shunt capacitors under harmonic conditions; on the other hand, it can filter harmonics according to user requirements, clean the power grid environment, reduce losses, eliminate harmonic hazards, and provide capacitive reactive power to the system to improve power factor. The GGJ low-voltage reactive power compensation cabinet is widely applicable in power distribution systems in industries such as electric power, metallurgy, petrochemical, industrial and mining enterprises, construction, and machinery.

This compensation cabinet has voltage zero-crossing switching capability, achieving no inrush current and no surge operation, and can frequently and rapidly switch capacitors. Whether for dynamic tracking of load changes or static compensation needs, the GGJ low-voltage reactive power compensation cabinet provides stable and reliable solutions, helping users significantly improve power quality.

I. Overview

The GGJ low-voltage reactive power compensation cabinet is specifically designed for actual grid conditions. It adopts power electronics technology and intelligent control technology. On one hand, it effectively solves the problem of automatic switching reactive power compensation of shunt capacitors under harmonic conditions; on the other hand, it can filter harmonics according to user requirements, clean the power grid environment, reduce losses, eliminate harmonic hazards, and provide capacitive reactive power to the system to improve power factor. It can be used in power distribution systems in industries such as electric power, metallurgy, petrochemical, industrial and mining enterprises, construction, and machinery.

II. Product Model Description

GGJ Low-voltage Reactive Power Compensation Cabinet Model Description Diagram

III. Operating Conditions

  • Altitude: 2000 meters
  • Ambient temperature: -25~50C
  • Relative humidity: ≤90% at 20C
  • Installation site free from flammable and explosive materials, corrosive gases and conductive dust.
  • No severe vibration and bumping, installation inclination not more than 5 degrees

IV. Structure Introduction

  • Voltage zero-crossing switching compensation device, achieving no inrush current and no surge, capable of frequent and rapid capacitor switching.
  • Fast response speed, rapidly tracking reactive power changes in the system load, with real-time dynamic or static response switching.
  • Uses automatic/manual capacitor switching device, can operate frequently, improving compensation granularity.
  • Equipped with cooling fans on the cabinet top, controlled by a temperature switch to regulate the internal temperature.
  • Comprehensive protection functions: includes short-circuit, overload, overvoltage, undervoltage, phase loss protection, easy to set.

V. Technical Parameters

  • Rated voltage: 400V, 660V, 1000V
  • Rated frequency: 50Hz
  • Rated capacity: 30-10000var
  • Operating voltage range: 0.8-1.1 Un
  • Capacitor connection method: Y or △
  • Measurement error: Voltage: ±0.5%, Current: ±1%, Reactive power: ±1%
  • Switching method: Automatic switching based on harmonic voltage or power factor
  • Switching delay: 0-999s adjustable

VI. Motor Local Compensation Calculation Table

Compensation Capacity Determination Table

Calculation of required capacitor capacity for local compensation of motors
Before Compensation kVAr required per kW load to achieve desired COSφ2
tanφ1 cosφ1 cosφ2=0.7 cosφ2=0.75 cosφ2=0.8 cosφ2=0.82 cosφ2=0.85 cosφ2=0.87 cosφ2=0.9 cosφ2=0.92 cosφ2=0.95 cosφ2=1.00
4.9 0.25 3.88 4.02 4.15 4.2 4.28 4.33 4.41 4.47 4.57 4.9
3.87 0.28 2.85 2.99 3.12 3.17 3.25 3.31 3.39 3.45 3.54 3.87
3.18 0.3 2.16 2.3 2.43 2.48 2.56 2.61 2.7 2.75 2.85 3.18
2.68 0.35 1.66 1.79 1.93 1.98 2.06 2.11 2.19 2.25 2.35 2.68
2.29 0.4 1.27 1.41 1.54 1.59 1.67 1.72 1.81 1.87 1.96 2.29
2.16 0.42 1.14 1.28 1.41 1.46 1.54 1.59 1.68 1.74 1.83 2.16
2.04 0.44 1.02 1.16 1.29 1.34 1.42 1.47 1.56 1.62 1.79 2.04
1.93 0.46 0.91 1.05 1.18 1.23 1.31 1.36 1.45 1.5 1.6 1.93
1.83 0.48 0.81 0.95 1.08 1.13 1.21 1.26 1.34 1.4 1.51 1.83
1.73 0.5 0.71 0.85 0.98 1.03 1.11 1.17 1.25 1.31 1.48 1.73
1.64 0.52 0.62 0.76 0.89 0.94 1.02 1.08 1.16 1.22 1.31 1.64
1.56 0.54 0.54 0.68 0.81 0.86 0.94 0.99 1.07 1.13 1.21 1.56
1.48 0.56 0.46 0.6 0.73 0.78 0.86 0.91 1 1.05 1.23 1.48
1.4 0.58 0.38 0.52 0.65 0.71 0.78 0.84 0.92 0.98 1.15 1.4
1.33 0.6 0.31 0.45 0.58 0.64 0.71 0.77 0.85 0.91 1.08 1.33
1.27 0.62 0.25 0.38 0.52 0.57 0.65 0.7 0.78 0.84 1.01 1.27
1.2 0.64 0.18 0.32 0.45 0.5 0.58 0.63 0.72 0.87 0.95 1.2
1.14 0.66 0.12 0.26 0.39 0.44 0.5 0.57 0.65 0.71 0.89 1.14
1.08 0.68 0.06 0.2 0.33 0.38 0.46 0.51 0.59 0.65 0.83 1.08
1.02 0.7 - 0.14 0.27 0.32 0.4 0.45 0.54 0.59 0.77 1.02
0.96 0.72 - 0.08 0.21 0.27 0.34 0.4 0.48 0.54 0.71 0.96
0.91 0.74 - 0.03 0.16 0.21 0.29 0.34 0.42 0.48 0.66 0.91
0.86 0.76 - - 0.11 0.16 0.24 0.29 0.37 0.43 0.6 0.86
0.8 0.78 - - 0.05 0.1 0.18 0.24 0.32 0.38 0.47 0.8
0.75 0.8 - - 0.05 0.13 0.18 0.27 0.32 0.42 0.5 0.75
0.7 0.82 - - - 0.08 0.13 0.21 0.27 0.37 0.45 0.7
0.65 0.84 - - - 0.03 0.08 0.16 0.22 0.32 0.4 0.65
0.59 0.86 - - - - 0.03 0.11 0.17 0.26 0.34 0.59
0.84 0.88 - - - - 0.06 0.11 0.21 0.29 0.54 -
0.48 0.9 - - - - - 0.06 0.16 0.23 0.48 -
0.48 0.92 - - - - - - 0.1 0.18 0.43 -
0.36 0.94 - - - - - - 0.03 0.11 0.36 -
0.29 0.96 - - - - - - - 0.01 0.29 -
0.2 0.98 - - - - - - - - 0.2 -

VII. Common Configuration Table

Scheme 1: Common Compensation Selection
Capacitor Contactor Capacitor Switching Composite Switch Self-healing Shunt Capacitor
CJ19-25 XXFK-△-16KVA BSMJ0.4-1-3
CJ19-25 XXFK-△-16KVA BSMJ0.4-2-3
CJ19-25 XXFK-△-16KVA BSMJ0.4-3-3
CJ19-25 XXFK-△-16KVA BSMJ0.4-5-3
CJ19-25 XXFK-△-16KVA BSMJ0.4-6-3
CJ19-25 XXFK-△-16KVA BSMJ0.4-7.5-3
CJ19-25 XXFK-△-16KVA BSMJ0.4-8-3
CJ19-25 XXFK-△-16KVA BSMJ0.4-10-3
CJ19-25 XXFK-△-16KVA BSMJ0.4-12-3
CJ19-32 XXFK-△-16KVA BSMJ0.4-14-3
CJ19-32 XXFK-△-16KVA BSMJ0.4-15-3
CJ19-32 XXFK-△-16KVA BSMJ0.4-16-3
CJ19-43 XXFK-△-20KVA BSMJ0.4-18-3
CJ19-43 XXFK-△-20KVA BSMJ0.4-20-3
CJ19-63 XXFK-△-30KVA BSMJ0.4-25-3
CJ19-63 XXFK-△-30KVA BSMJ0.4-30-3
CJ19-95 - BSMJ0.4-40-3
CJ19-95 - BSMJ0.4-50-3
Scheme 2: Split-Phase Compensation Selection
Capacitor Contactor Capacitor Switching Composite Switch Self-healing Shunt Capacitor
CJ19-25 XXFK-Y-7.5KVAX3 BSMJ0.25-1-3Y
CJ19-25 XXFK-Y-7.5KVAX3 BSMJ0.25-2-3Y
CJ19-25 XXFK-Y-7.5KVAX3 BSMJ0.25-3-3Y
CJ19-25 XXFK-Y-7.5KVAX3 BSMJ0.25-4-3Y
CJ19-25 XXFK-Y-7.5KVAX3 BSMJ0.25-5-3Y
CJ19-25 XXFK-Y-7.5KVAX3 BSMJ0.25-6-3Y
CJ19-25 XXFK-Y-7.5KVAX3 BSMJ0.25-7-3Y
CJ19-25 XXFK-Y-10KVAX3 BSMJ0.25-8-3Y
CJ19-25 XXFK-Y-10KVAX3 BSMJ0.25-10-3Y
CJ19-25 XXFK-Y-12KVAX3 BSMJ0.25-12-3Y

VIII. Reference Schemes

GGJ Low-voltage Reactive Power Compensation Cabinet Reference Scheme Diagram

GGJ Low-voltage Reactive Power Compensation Cabinet Voltage Zero-Crossing Switching Capability, Achieving No Inrush Current and No Surge Operation

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