本德尔（BENDER）绝缘监视器

IRDH275-435

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The A-ISOMETER? IRDH275 monitors for ground faults in ungrounded AC  0 - 793 V and DC 0 - 650 V systems by measuring the system's insulation resistance. The IRDH275 is able to detect ground faults in ungrounded systems before leakage current may even be present.

The AMPPlus measuring principle meets the requirements of modern power supplies

which often include rectifiers, variable frequency drives, and pure DC components by au-

tomatically adapting itself to prevailing system conditions.

IRDH275 绝缘监视器能在直流不接地0-793 V和交流0-650V 中监督接地故障, 并测量系统绝缘电阻阻值。IRDH275 能够在不接地系统中，发现接地故障，在漏泄电流出现前将故障排除。

并且，本德尔IRDH27-435采用自己的专利技术AMP测量法，即自适应脉冲信号测量法，可有效地排除系统泄漏电容和直流成份对绝缘监视造成的干扰，提高绝缘测量的灵敏度和可靠性。

?Insulation monitoringfor ungrounded

systems:      single- or three-phase       AC0…793   V,    DC  0…650   V    

?Nominal       voltage   extendable    via coupling device

?Two      separately     adjustable     response      values    1     k?…10  M?

?AMPPlus measuring principle

?Automatic    adaptation     to    the  system   leakage capacitance

?Info      key  to    display   device    settings  and the system leakage capacitance

?Self monitoring with automatic alarm message

?Automatic    self-testsetting

?Connectionfor   external  metering

?Internalandexternal  test/reset

?Two      separatealarms    withtwo  voltage-free SPDT contacts

?            Normallyenergized     or    normallydeener  

       gized      operation

?            Backlit    LCD       display

?            RS-485  interface

IRDH275型绝缘监视仪(IRDH265的改进型)

- AC,3(N)AC,AC/DC0-793V或DC0-650V的IT系统的绝缘监视

- 连接耦合仪以后可扩展被监视系统电压

- 带背光的液晶显示

- 两组独立的响应值设定

- 响应值调节范围1kΩ-10MΩ

- 两组独立的输出报警继电器

- 自适应系统泄漏电容

- 系统泄漏电容显示

- RS485接口

- 测量值模拟电流信号输出

- 内置或外接自检/复位按钮

- 接线监视

- 导轨安装

- 外形尺寸:110x113x74mm

Rated insulation voltage   AC 800 V

Rated impulse voltage/pollution degree  8 kV/3

Voltage ranges

Nominal system voltage Un  AC, 3(N)AC 0…793 V, DC 0…650 V

Rated frequency fn  DC, 0.2…460 Hz

Supply voltage US  AC 88…264 V, DC 77…286 V

Frequency range US    20…460 Hz

Power consumption  ≤14 VA

Response values

Response value Ran1 (Alarm 1)  1 k?…10 M?

Response value Ran2 (Alarm 2)  1 k?…10 M?

Absolute error (1 k?…10 k?)   + 2 k?

Relative percentage error (10 k?…10 M?)  0 %…+ 20 %

Response time tan at RF = 0.5 x Ran and Ce = 1 ?F  < 5 s

Measuring time  see characteristic curves (TGH page 69)

Hysteresis (1 k?…10 k?)/(10 k?…10 M?)  + 2 k?/25 %

Measuring circuit

Measuring voltage Um (peak value)  ± 50 V

Measuring current Im (at RF = 0 ?)  ≤278 ?A

Internal DC resistance Ri  ≥180 k?

Impedance Zi at 50 Hz  ≥180 k?

Permissible extraneous DC voltage Ufg  ≤1200 V

Permissible system leakage capacitance   ≤500 μF

Factory setting  150 ?F

IRDH275  RS-485/ASCII

IRDH275B  RS-485/BMS

Max. cable length  1200 m

Recommended cable (shielded, shield on one side connected to ground)  J-Y(ST)Y 2 x 0.6

Terminating reistor  120 ? (0.5 W)

Switching elements

Number of switching elements    2 SPDT contacts

Operating principle  normally energized/denergized operation

Factory setting  normally deenergized operation

Electrical service life, number of cycles  12000

Contact class  IIB in accordance with DIN IEC 60255-0-20

Rated contact voltage  AC 250 V/DC 300 V

Making capacity  AC/DC 5 A

Breaking capacity  2 A, AC 230 V, PF = 0.4 – 0.2 A, DC 220 V, L/R = 0.04 s

Minimum contact current at DC 24 V  2 mA (50 mW)

General data

Shock resistance IEC 60068-2-27 (during operation)  15 g/11 ms

Bumping IEC 60068-2-29 (during transport)  40 g/6 ms

Vibration resistance IEC 60068-2-6 (during operation)  1 g/10…150 Hz

Vibration resistance IEC 60068-2-6 (during transport)  2 g/10…150 Hz

Ambient temperature (during operation/during storage)  - 10 °C…+ 55 °C/- 40 °C…+ 70 °C

Climatic class acc. to DIN IEC 60721-3-3  3K5

Operating mode  continuous operation

Mounting    display oriented

Connection  screw-type terminals

Connection properties rigid/flexible  AWG 24...12 / 24...14

Degree of protection, internal components /terminal (DIN EN 60529)   IP30 / IP20, NEMA 1

DIN rail mounting acc. to  DIN EN 60715/IEC 60715

Screw mounting, mounting plate  2 x M4

Flammability class  UL94V-0

Product standards  DIN EN 61557-8: 1998-05

  EN 61557-8: 1997-03, IEC 61557-8: 1997-02

  ASTM F1669M-96, ASTM F1207M-96

Operating manual  TGH1361

Weight  approx. 1.1 lb

Option “W”

Shock resistance IEC 60068-2-27 (during operation)  30 g/11 ms

Bumping IEC 60068-2-29 (during transport)  40 g/6 ms

Vibration resistance IEC 60068-2-6  1.6 mm/10…25 Hz, 4 g/25…150 Hz

Ambient temperature (during operation)  - 40 °C…+ 70 °C

Ambient temperature (during transport)  - 40 °C…+ 85°C

同系列其他型号

IRDH275-415      IRDH275B-427    IRDH275BW-427

IRDH275-4227    IRDH275B-435    IRDH275BW-435

IRDH275-425      IRDH275BM-727IRDH275U-435

IRDH275-427      IRDH275B-R427  IRDH275W-4227

IRDH275-435      IRDH275B-R435  IRDH275W-425

IRDH275-49327  IRDH275BU-627  IRDH275W-427

IRDH275-49335DB     IRDH275BU-635  IRDH275W-435

IRDH275B-4227  IRDH275BW-4135      IRDH275BW-425

IRDH275B-425          

IRDH 系列

    应用于交流、直流或带直流成份的交流驱动系统(主回路)

 IRDH275型绝缘监视仪(IRDH265的改进型)
- AC,3(N)AC,AC/DC0-793V或DC0-650V的IT系统的绝缘监视
- 连接耦合仪以后可扩展被监视系统电压
- 带背光的液晶显示
- 两组独立的响应值设定
- 响应值调节范围1kΩ-10MΩ
- 两组独立的输出报警继电器
- 自适应系统泄漏电容