DDZN Intelligent Capacitor

Product Introduction
Intelligent capacitors are a new generation of capacitor reactive power compensation devices that are suitable for 0.4KV low-voltage distribution networks, efficient and energy-saving, reduce line losses, and improve power factor. They are an independent and complete intelligent reactive power compensation system composed of intelligent control units, switching switches, protection devices, and low-voltage self-healing power capacitors, replacing traditional reactive power compensation devices composed of various dispersed devices.

Product Features
1、A. The C series intelligent capacitors are suitable for on-site applications where the total harmonic distortion rate of voltage is not greater than 5%. B series intelligent capacitors are suitable for harmonic field applications,.

2、Adopt synchronous switch technology, advanced technology, stable and reliable performance; Modular structure, flexible combination, convenient expansion, simple installation, easy maintenance, LCD Chinese display, simple operation, easy maintenance, and convenient for on-site fault diagnosis.

3、A. The B and C series products can be put into operation in the form of self-organized networks using secondary transformers (any one as the host and the other capacitors as the slaves), or can be put into operation in the form of self-organized networks under the action of controllers.

Model Description

Type A Product Selection Table

B-type Product Selection Table 1

Type B Selection Table 2

C-type selection table

Technical Parameter
A、ambient condition

Environmental temperature: -25/B (-25-45 ℃)

Relative temperature: 40 ℃, 20-90%;

Altitude: ≤ 2000m.

B、Power supply conditions

Rated voltage: -380V

Voltage deviation: ± 20%

Voltage waveform: The total harmonic distortion rate of A-type voltage shall not exceed 5%;

The total harmonic distortion rate of B-type voltage shall not exceed 10%;

Power frequency: 48.5-51.5Hz;

Power consumption: ＜ 0.5W (when cutting off the capacitor), ＜ 1W (when switching on two capacitors).

C、Electrical safety

The electrical clearance and creepage distance, insulation strength, safety protection, short circuit strength, sampling and control circuit protection all comply with the corresponding clauses in the Chinese power industry standards DL/T842-2003 "Low voltage capacitor device usage technology" and GB/T22582-2008 "Low voltage power capacitor power factor compensation device".

D、measurement error

Voltage: ≤ 0.5 (within the range of 80-120% of rated voltage);

Current: ≤ 1% (within the range of 5% -120% rated current); ≤ 0.5% (within the range of 20% -120% of rated current);

Temperature: ± 1 ℃.

E、Protection error

Voltage: ≤ 0.5%; Current: ≤ 1.0%;

Temperature: ± 1 ℃ (capacitor); Time: ± 0.01s.

F、Reactive power compensation parameters

Capacitor switching time interval:>10s;

Single reactive capacity: three-phase ≤ (30+30) kvar;

Online ≤ 32 units.

G、Reactive power compensation parameters

Control accuracy: 100%;

Permissible switching times:>1 million times;

Attenuation rate of capacitor capacity operation time: ≤ 1%/year;

Capacitor capacity switching attenuation rate: ≤ 0.1%/10000 times;

Product dimensions and installation dimensions:

A-type product:

B-type products:

C-type products: