IRDH265-4 BENDER A-ISOMETER Insulation Monitoring Device for IT AC
systems
| Brand/Manufacturer | BENDER/GERMANY |
| Part Number | IRDH265-4 |
| Alternate Part Number | IRDH265-4 |
| Description | Insulation Monitoring Device |
| Dimennsions | 14.4 cm x 13.3 cm x 8.2 cm |
| Weight | 0.8kg |
Product Details
The fundamental functions:
For IT AC systems, for IT AC systems with galvanically connected
rectifiers and IT DC systems (isolated power)
Extended voltage range via coupling devices
Automatic adaptation to the existing system leakage capacitance
AMP measuring principle
Two adjustable response ranges
LCD display
RS-485 interface
Connection monitoring
Automatic self test
Product description
The IRDH265 monitor the insulation resistance of IT3(N)AC, AC/DC
and DC systems. The AC systems may include extensive DC supplied
loads (e.g. rectifiers, converters, thyristor-controlled DC drives,
see 2.3). The devices automatically adjust to the system leakage
capacitance.
Coupling devices are available to extend the voltage range. The
IRDH265 ISOMETER is fitted into a standard plastic casing suitable
for DIN rail mounting according to DIN EN 50022 or for screw
mounting.
Functional description
Both ISOMETER are connected between the unearthed system and the
equipotential bonding conductor (PE). The setting of the response
values and other parameters can be carried out via the function
keys. The parameters are indicated on the LC display and are stored
in a non-volatile memory (EEPROM) after setting.
A pulsating AC measuring voltage is superimposed on the system (AMP
measuring principle). The measuring pulse consists of positive and
negative pulses of the same amplitude. The period depends on the
respective leakage capacitances and the insulation resistance of
the system to be monitored. An insulation fault between system and
earth closes the measuring circuit. An electronic evaluation
circuit calculates the insulation resistance which is indicated on
a LC display or an external ohmmeter after the response time.
About Moore
Moore Automation is always committed to excellence in corporate
philosophy, whether it is control system components,
services, or delivery efficiency, we are committed to doing better.
Specializing In: Control Systems (DCS, PLC, CNC); Panel
Controllers; HMI and Display Panels; Drives; Servo Motors; Encoders
and Resolvers; Power Supplies.
We have a large inventory of spare parts for industrial control
systems. Manufacturers cover a wide range and also work with a wide
range of suppliers. Fast shipping to provide you with the best
solution to meet your urgent needs If we don't have the stock
request quotation you need, we can usually find it for you. Moore
Automation also offers quality outdated/discontinued spare parts to
extend the installed life of your installed control system and
reduce maintenance costs.
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