EDS460-D-1 具有控制和显示功能的绝缘故障定位器

绝缘故障定位器ISOSCAN®EDS460/490结合ISOMETER®
应用IRDH575或定位电流注入器PGH对出土系统(IT系统)的绝缘故障进行定位。通过测量电流互感器检测绝缘监测装置IRDH575或定位电流注入器PGH产生的定位电流信号，并由绝缘故障定位器进行评估。多达12个测量电流互感器可以连接到一个EDS460/490。一个RS-485接口(BMS协议)可连接90个EDS绝缘故障定位器。因此，可以监控多达1080个电路。最大扫描时间为…10s，见TGH1394。
应用程序
•交流，交流/直流和直流IT系统的绝缘故障定位
•工业厂房和船舶的主电路和控制电路
•在发电站的二极管解耦直流IT系统
•医疗场所系统
函数
通过ISOMETER®IRDH575或PGH手动或自动启动绝缘故障定位。一旦启动，绝缘故障定位EDS同时扫描所有测量电流互感器(通道)。如果存在多个EDS，这些设备也会同时被扫描。
当测量电流互感器检测到的定位电流超过设定的响应值时，报警LED 2亮起，普通报警继电器开关和故障电路在图形显示器上以明文形式显示。版本EDS…L通过报警led指示出线电路故障。连续监测测量电流互感器与绝缘故障定位器之间的连接。在断线的情况下，报警LED 1亮起，报警继电器开关。
故障存储器激活后，各个通道的报警信息将一直保存，直到按下复位按钮或通过RS-485接口给出复位命令。故障内存关闭后，告警信息会一直保存到绝缘故障消除。

该设备利用历史存储器用于故障安全存储多达300个测量值/事件(日期，时间，通道，事件代码，测量值)，以便有关输出电路或区域的所有数据可以随时追溯到(何时发生的事情)。
交流剩余电流测量
EDS绝缘故障定位器也可用于指示出土电源(IT系统)的交流剩余电流。当交流残余电流在电路中定位时，这是必不可少的。

EDS460-D-1

The insulation fault locators ISOSCAN® EDS460/490 in combination with the ISOMETER®
IRDH575 or the locating current injector PGH are applied for localising insulation faults in unearthed systems (IT systems). The locating current signals generated by the insulation monitoring device IRDH575 or the locating current injector PGH are detected by measuring current transformers and evaluated by the insulation fault locators. Up to 12 measuring current transformers can be connected to one EDS460/490. A total of 90 EDS insulation fault locators can be connected via one RS-485 interface (BMS protocol). Hence, up to 1080 circuits can be monitored. The maximum scanning time is …10 s, see TGH1394.
Application
• Insulation fault location in AC, AC/DC and DC IT systems
• Main and control circuits in industrial plants and ships
• Diode-decoupled DC IT systems in power stations
• Systems for medical locations
Function
Insulation fault location is started manually or automatically via the ISOMETER® IRDH575 or the PGH. Once started, the insulation fault locator EDS simultaneously scans all measuring current transformers (channels). If several EDS exist, these devices are also scanned simultaneously.
When the locating current detected by a measuring current transformer exceeds the set response value, the alarm LED 2 lights up, the common alarm relay switches and the faulty circuit is indicated as plain text on the graphical display. Version EDS…L indicates faulty outgoing circuits via alarm LEDs. The connection between the measuring current transformer and the insulation fault locator is continuously monitored. In the event of wire interruption, the alarm LED 1 lights up and the alarm relay switches.
With the fault memory activated, the alarm messages of the individual channels remains stored until the reset button is pressed or until a reset command is given via the RS-485 interface. When the fault memory is deactivated, the alarm message remains stored until the insulation fault is eliminated.

The device utilises a history memory for failsafe storing of up to 300 measured values/ events (date, time, channel, event code, measured value), so that all data about an outgoing circuit or an area can be traced back at any time (what happend when).
AC residual current measurement
EDS insulation fault locators can also be used for the indication of AC residual currents in unearthed power supplies (IT systems). This is essential when also AC residual currents are to be localised in the circuits.