TVOC-2-240 弧光监测系统 可设置自动复位和电流感应单元

ABB在电气安全领域一直处于领先地位。它的TvOC-2弧光监测系统可以提供卓越的弧光监测保护，并且通过了SIL-2功能安全性标准认证。

新增的插入式通讯模块可以为操作人员提供实时状态更新，快速提供弧光位置信息。

TVOC-2-240 弧光监测器

弧光监测器的设计采用了模块化的概念，适用于所有类型的低压和中压开关柜，并获得了功能安全性(SIL-2)标准认证，且符合IEC615O8和IEC62061标准。这些标准确保了产品的可靠性。这种认证与EN ISO13849-1中的d级性能要求一致。安全功能由专门的硬件处理。此外，系统、脱扣日志和用户友好界面的操作菜单则由微处理器进行处理。

系统可以设置成根据是哪个光传感器检测到光，让指定的断路器脱扣。通过拨码开关设置此功能，并可设置自动复位和电流感应单元。系统储存的能量能够在电源中断后支持运行o.2秒，这个时间足以保证脱扣电路动作，即使在发生短路故障、电压消失的情况下也不受影响。

注意:断路器仍需要后备电源作为脱扣电路的工作电源。

连接

所有接线可以在弧光监测器的正面进行。插拔式接线端子有助于在Tvoc-2安装到开关柜之前完成接线。固态脱扣触点是IGBT型，能确保脱扣快速可靠。

HMI(人机界面)

·键盘设置操作，全文本显示

·错误日志和脱扣信息在失电后不丢失·实时记录错误日志和脱扣日志

. TVOC-2可以安装2台独立的HMI（柜门上和产品本体上)·包含一根3米长电缆

TVOC-2-240 可提供基于Modbus RTu的通讯模块

传感器和传感器模块

光纤传感器不受电气干扰

·预校准光传感器，无需人工调校。可连接多达30个光传感器

电流感应单元(可选)

电流感应单元(csU)是一种可选附件，只在少数特定场合需要使用，如经常受到强光照射的地方。

电流感应单元将电流信号转换成光信号，并用光导纤维进行传输。如果意外造成连接中断，系统会当成过电流处理。当监测到有弧光时，系统发出脱扣信号以保证系统的可靠性。

增加CSU会导致动作时间增加，具体取决于过电流的大小和测量的相数。在正常条件下，从发生过电流到触发光信号输出的时间是在2-8毫秒之间。

TVOC-2-240 弧光监测器的连接

3个IGBT高速固态脱扣触点2个转换脱扣信号继电器

1个转换自监视报警继电器(IRF)2个电流感应单元输入

1个电流感应单元输出

TVOC-2-240 弧光监测系统 可设置自动复位和电流感应单元

ABB has always been a leader in electrical safety. Its TvOC-2 arc monitoring system provides superior arc monitoring protection and is certified to the SIL-2 functional safety standard.

A new plug-in communication module provides operators with real-time status updates and quick arc position information.

TVOC-2-240 arc monitor

The arc monitor is designed with a modular concept for all types of low and medium voltage switchgear and is certified to the functional safety (SIL-2) standard and complies with IEC615O8 and IEC62061 standards. These standards ensure the reliability of the product. This certification is consistent with the Level d performance requirements in EN ISO13849-1. Security functions are handled by specialized hardware. In addition, the system, trip logs, and user-friendly operation menus are handled by the microprocessor.

The system can be set up to cause a specified circuit breaker to trip depending on which optical sensor detects light. This function is set with a dip switch, and automatic reset and current sensing units can be set. The stored energy of the system can support the operation of o.2 seconds after the power interruption, which is enough time to ensure that the trip circuit is operated, even in the case of a short circuit fault and the voltage is lost.

Note: The circuit breaker still requires a backup power supply as the working power supply for the trip circuit.

join

All wiring can be done on the front of the arc monitor. The plug and pull terminals help complete the wiring before the Tvoc-2 is installed into the switchgear. The solid state trip contact is IGBT type, which ensures fast and reliable trip.

HMI(Human Machine Interface)

· Keyboard setting operation, full text display

· Error logs and trip information are not lost after power loss. · Real-time error logs and trip logs are recorded

The TVOC-2 can be installed with 2 separate Hmis (on the cabinet door and on the product body)· includes a 3 meter long cable

The TVOC-2-240 provides communication modules based on Modbus RTu

Sensors and sensor modules

Optical fiber sensors are free from electrical interference

· Pre-calibrate the optical sensor without manual calibration. Up to 30 light sensors can be connected

Current sensing unit (optional)

The current sensing unit (csU) is an optional accessory that needs to be used only in a few specific situations, such as where strong light is frequently exposed.

The current sensing unit converts the current signal into an optical signal and transmits it with an optical fiber. If the connection is accidentally interrupted, the system treats it as overcurrent. When the arc light is detected, the system sends out a trip signal to ensure the reliability of the system.

Increasing the CSU results in an increase in the operation time, depending on the size of the overcurrent and the number of phases measured. Under normal conditions, the time from the occurrence of overcurrent to the triggering of the optical signal output is between 2-8 milliseconds.

Connection of TVOC-2-240 arc monitor

3 IGBT high speed solid state trip contacts 2 conversion trip signal relays

1 conversion self-monitoring alarm relay (IRF) with 2 current sensing unit inputs

1 current sensing unit output