CTB2PH

Traditional reactive power compensation equipment with electromechanical contactors, has a well proven performance in installations where the load has, slow variations and it is not very sensitive to voltage fluctuations. Today, however, more and more industrial installations include electronic equipment very sensitive to voltage variations (PLC, computers, etc.) and also very fast changing working cycles (automatic welding machines, robots, etc.).
传统的带有机电接触器的无功补偿设备在负载变化缓慢、对电压波动不敏感的设备中具有良好的性能。然而，今天，越来越多的工业设备包括电子设备(PLC、计算机等)和非常快速变化的工作周期(自动焊接机、机器人等)对电压变化非常敏感。

Reactive power compensation with static contactors offers the best answer to these new industry requirements.
静态接触器的无功补偿为这些新的工业需求提供了很好的解决方案。

LIFASA automatic capacitor banks with static contactors, use thyristors instead of traditional contactors. The thyristors switch-on capacitors on zero crossing voltage, and switch them off on zero current situation. This firing strategy grants a totally transient free switching of power capacitors, avoiding any problem with transient overvoltages.
LIFASA自动电容器组采用静态接触器，用晶闸管代替传统接触器。晶闸管在过零点电压上接通电容器，并在零电流情况下将它们断开。这种触发策略允许电力电容器的完全瞬间自由切换，避免了瞬时过电压的各种问题。

This transient free switching gives a very fast reaction time of the power factor equipment with sudden reactive power demand variations. This reaction time (the time to switch on or off a capacitor step) is usually not higher than 20 milliseconds. This means that up to 25 operations per second are possible.
这种瞬间无功切换使得功率因数设备在突然的无功需求变化时具有非常快的反应时间。这个反应时间（接通或关断电容器步骤的时间）通常不高于20毫秒，这意味着每秒多达25次操作是可能的。

GENERAL CHARACTERISTICS
一般特征

LIFASA automatic capacitor banks with static contactors are supplied completely assembled and ready for use: it is only necessary to give them the operation signal from a suitable current transformer, and to connect them to the mains by cables of adequate section. They are composed of the following elements:
具有静态接触器的LIFASA自动电容器组是完全组装并可以随时投入使用的：只需要从合适的电流互感器向它们提供操作信号，并通过适当截面的电缆将它们连接到电源上。它们由以下元素组成：

REACTIVE POWER CONTROLLER
无功控制器

These banks use the MASTER FAST controllers, that are a fast response variation of the MASTER series of controllers. These controllers are specially designed for the control of thyristor capacitor banks and are characterized by their optically isolated outputs and also for having an extremely fast response time that can be up to 20 milliseconds.
这些电容器柜使用MASTER快速控制器，这是MASTER系列控制器的快速响应变化。这些控制器是专门为控制晶闸管电容器组而设计的，其特点是输出光隔离，并且响应时间非常快，可达20毫秒。

CONTROL MODULE
控制模块

It is composed by an electronic control circuit, that gives the triggering pulses to thyristors to switch on at zero cross voltage point and to switch off when zero cross current situation.
它由电子控制电路组成，该电子控制电路向晶闸管提供触发脉冲，以便在零交叉电压点接通，并在零交叉电流情况下断开。

The control module is assembled on a printed circuit board and receives the action signal from the MASTER FASTER.
控制模块组装在印刷电路板上，更快地接收来自主机的动作信号。

POWER MODULE
电源模块

It is formed by thyristors, mounted with well-dimensioned heatsinks, protection fuses and limiting inductances.
它由晶闸管构成，安装有良好尺寸的散热器、保护熔断器和限流电感。

CAPACITORS
电容器

These banks use POLB/ FML/ MFB series of LIFASA power capacitors.
这些电容器柜使用POLB/FLM/MFB系列LIFASA电力电容器。