Productinformation for A-ISOMETER® IR426-D47

The A-ISOMETER® IR426-D47 monitors the insulation resistance of unearthed AC/DC systems for the supply of operating theatre luminaires. DC-supplied components in AC/DC systems do not influence the operating characteristics. An external supply voltage allows de-energized systems to be monitored too.

Characteristics of A-ISOMETER® IR426-D47

Insulation monitoring for AC/DC systems supplying operating theatre luminaires
Two separately adjustable response values
Connection monitoring system/earth
LEDs: Power On, Alarm 1, Alarm 2
Internal/external test/reset button
Two separate alarm relays (one changeover contact each)

N/O or N/C operation, selectable
Fault memory behaviour, selectable
Self monitoring with automatic alarm message
Multi-functional LC display
Adjustable response delay
Two-module enclosure (36 mm)

Usages of A-ISOMETER® IR426-D47

Optional accessories for A-ISOMETER® IR426-D47

Accessories

Type	Art. No.
Mounting clip for screw mounting (one piece per device)	B 9806 0008

Variants of A-ISOMETER® IR426-D47

Ordering information

Type	Nominal system voltage* Un	Supply voltage* US	Response value Ran	System leakage capacitance Ce	Art. No.
IR426-D47	DC/AC 42…62 Hz 0…132 V	DC 70…300 V/AC 15…460 Hz 70…300 V	10…200 kΩ	≤ 20 µF	B 9101 6307

Device version with screw-type terminals on request * absolute values

Downloads for A-ISOMETER® IR426-D47

	Language	Date	Size
Manual IR426-D47	german+english	09/29/2010	481.94 KB
Datasheet IR426-D47	german	09/28/2011	301.5 KB
Datasheet IR426-D47	english	09/28/2011	305.09 KB