JK系列智能集成电力电容器

概述 General Description

JK系列智能集成电力电容器是0.4kV低压电网高效节能、降低线损、提高功率因数和电能质量的新一代无功补偿设备。它由智能测控单元、过零投切开关电路、保护单元、两台(△型)或一台(Y型)低压电力电容器构成。替代常规由智能控制器、熔丝、复合开关或机械式接触器、热继电器、低压电力电容器、指示灯等散件在柜内和柜面由导线连接而组成的自动无功补偿装置。改变了传统无功补偿装置体积庞大和笨重的结构模式，从而使新一代低压无功补偿设备具有补偿效果更好，体积更小，功耗更低，价格更廉，节约成本更多，使用更加灵活，维护更加方便，使用寿命更长，可靠性更高的特点，适应了现代智能电网对无功补偿的更高要求。

JK series intelligent integrated power capacitor bank as a new generation of reactive power compensating device, is used in 0.4KV low voltage network, to realize energy saving, reduce the line loss, improve power factor and electric quality, it consists of intelligent monitoring device, over-zero switching circuit, protective unit, two pieces of (△ connection) or one piece of (Y connection) low voltage power capacitor(s), substitute for the traditional compensating system constructed in cabinet by use of intelligent controller, fuses, combination switch or mechanical contactor, thermal relay, low voltage power capacitor, indicators and etc accessories, which sweep away the defect of large space and heavy weight in traditional devices, realize better compensating effect, smaller size, lower onsumption loss, lower cost, the maintenance is more convenient, longer working life, and higher reliability, it can completely meet with the requirement of latest intelligent reactive power compensating for modern power network.

技术指标

1、使用条件：海拔2000米以下，环境温度-25℃~+50℃；相对湿度20℃,≤90%。

2、额定电压：250VAC、50Hz。

3、额定容量：共补5-40kvar，分补5-20kvar。

4、电容允差：-5~+10%。

5、允许过压：110%额定电压。

主要特点

1、体积小、安装简便，可随机就地智能补偿，只需补接信号输入即可进行自动投切。

2、可一机自动智能，亦可多机联网智能，实现多机自动联网投运，无需再增控制器 控制。

3、集成电容可自动显示功率因数、电网电压、电网二次电流、产品温度及产品故障显示。

4、可根据实际情况设定投入功率因数，切除电压设定等。

产品应用电气连接及接线示意

1、产品的配线要求

产品与电源端的连接导线规格：一般情况，单台总容量为30kvar以

上的共补和总容量为20kvar分补电容器，应采用标准16mm2截面积的多

芯铜导线，其余规格的产品采用标准10mm2截面积的多芯铜导线。

产品与产品间的信号线连接导线规格：信号线包括电流取样线、RS-

485通信线、指示灯线、外控信号输入线等。信号线上所载电流很小，选

择强度合适的铜导线即可，一般采用截面积为0.75mm2左右的多芯铜导线。

各台之间RS-485通信线并接。电流信号线并接后接到JK-CF二次电

流互感器的输出端。

Technical Index

1. Working conditions: altitude less than 2000m, ambient temperature: -25℃

~+50℃, relative humidity < 90% at 20℃

2. Rated voltage：250VAC、50Hz。

3. Rated capacity: 5-40kvar at compensating together; 5-20kvar at respectively

compensating.

4. Permissible deviation：-5~+10%。

5.Highest permissible over-voltage: 110% rated voltage

Main Features

1. Small size, easy installation, it can be used for local compensating at any

place, that is able to work after main circuit and signal circuit connected with

this device.

2. One bank can operate independently, several capacitor banks can be interlinked

to operate, no more controller required furthermore.

3. It can display power factor, network voltage, secondary current of network,

capacitor temperature and fault.

4. It can set the capacitor switching-in power factor, voltage cutting-off value

and etc according to the actual conditions.

Wiring Diagram And Illustration Of Product Application

1. Wire requirements

The conductor connected between products and power supply: generally

the capacitor for three phase compensating more than 30KVAr and for respective

compensating more than 20KVar shall adopt the multi-core copper wire with

sectional cross area 16mm2, the others utilize multi-core copper wire with

sectional cross area 16mm2.

The signal wire between products: signal wire including current sampling

wire, RS-485 communication wire, indicator wire, input wire for outside control

signal and etc. the carrying current is small, so it use the copper wire with proper

strength, generally adopt multi-core copper wire with sectional cross area 0.75mm2

The communication wires for RS-485 in each capacitor banks are shunt

connected. The current signal wires are in parallel connected and connected to

secondary output terminal of CT in JK-CF.