IRDH575B1W-435 IRDH275系列的ISOMETER®用于监测地下主电路

IRDH275系列的ISOMETER®用于监测地下主电路(IT系统)AC, AC/DC 0…793 V的绝缘电阻。直流0…650v。AMPPlus测量方法满足现代电源的特殊要求，这些电源通常包括整流器、转换器、晶闸管控制的直流驱动器和直接连接的直流元件。在这些系统中，往往会出现对地高漏电容量
由于干扰抑制措施。IRDH275自动适应现有的系统条件。
与耦合装置结合使用时，该装置也可用于更高的电压。
外部供电电压也允许对断电系统进行监控。对于安装在配电板上的门，请参考型号IRDH375(B)。

当系统导体与大地之间的绝缘电阻低于设定的响应值时，报警继电器开关，报警led亮起。两个单独可调报警继电器允许区分预警和报警。测量值显示在LC显示器或外部连接的测量仪器上。
通过这种方式，任何变化，例如当电路连接到系统时，都可以很容易地识别出来。故障信息可以存储。按复位键可复位故障记忆。通过按下测试按钮，可以测试设备的功能以及与系统和接地的连接情况。按下“信息”按钮可提供其他信息，如现有系统泄漏电容或设备设置。
对设备和系统的功能以及接地连接进行持续监控。当发生故障时，系统故障继电器开关，“系统故障”报警LED亮起。设备的参数化可以通过LC显示或集成在前板上的功能按钮进行。

设备版本IRDH275B包括以下附加功能:
•历史记忆与实时时钟存储与日期和时间戳的所有报警信息
•电隔离RS-485接口(BMS协议)，用于与其他Bender设备通信
•Isometer断开继电器的几个Isometer®s在耦合IT系统的操作
•电流输出0(4)…20 mA(电隔离)

1 -“INFO”键:查询标准信息ESC键:返回菜单功能
2 -“TEST”键:调出自检箭头向上键:参数改变，滚动
3 -“RESET”键:删除报警和故障信息向下箭头键:参数更改，滚动。
4 -“MENU”键:激活菜单系统。进入键:确认参数更改
5 -报警LED“1”灯亮:绝缘故障，达到一级警告级别
6 -报警LED“2”灯亮:绝缘故障，达到二级警告级别
7 – LED灯:系统故障
8 – LC显示

IRDH575B1W-435

The ISOMETER® of the IRDH275 series is designed to monitor the insulation resistance of unearthed main circuits (IT systems) AC, AC/DC 0…793 V resp. DC 0…650 V. The AMPPlus measurement method meets the particular requirements of modern power supplies which often include rectifiers, converters, thyristor-controlled DC drives and directly connected DC components. In these systems often high leakage capacitances against earth occur
due to interference suppression measures. The IRDH275 automatically adapts itself to the existing system conditions.
In combination with a coupling device, the devices can also be used for higher voltages.
An external supply voltage allows de-energised systems to be monitored too. For door mounting into distribution panels, refer to type IRDH375(B).

When the insulation resistance between the system conductors and earth falls below the set response value, the alarm relays switch and the alarm LEDs light up. Two separately adjustable alarm relays allow to distinguish between prewarning and alarm. The measured value is indicated on the LC display or an externally connectable measuring instrument.
In this way any changes, for example when circuits are connected to the system, can be recognised easily. The fault message can be stored. The fault memory can be reset by pressing the reset button. By pressing the test button, the function of the device as well as the connections to system and earth can be tested. Pressing the Info button provides additional information, such as the existing system leakage capacitance or device settings.
The function of the device and the system and earth connections are continuously monitored. When a fault occurs, the system fault relay switches and the alarm LED “system fault” lights up. The parameterisation of the device can be carried out via the LC display or the function buttons integrated in the front plate.

Device version IRDH275B includes the following additional functions:
• History memory with real-time clock to store all alarm messages with date and time stamp
• Electrically isolated RS-485 interface (BMS protocol) for communication with other Bender devices
• Isometer disconnecting relays for the operation of several ISOMETER®s in coupled IT systems
• Current output 0(4 )…20 mA (electrically isolated)

1 – “INFO” button: to query standard information ESC button: back to the menu function
2 – “TEST” button: to call up the self test Arrow up button: Parameter changes, scroll
3 – “RESET” button: to delete alarm and fault messages Arrow down button: Parameter change, scroll.
4 – “MENU” button: to activate the menu system Enter button: to confirm parameter changes
5 – Alarm LED “1” lights: insulation fault, 1st warning level reached
6 – Alarm LED “2” lights: insulation fault, 2nd warning level reached
7 – LED lights: system fault
8 – LC display