Insulation fault locator ISOSCAN® EDS150

Product overview
The ISOSCAN® EDS150 is an insulation fault locator for unearthed (IT) power supplies designed for main circuits. Used together with an ISOMETER® or PGH locating-current transmitter, locating current pulses are detected by six integrated measuring current transformers and evaluated by the EDS150. The unit allows all current-carrying conductors of an outgoing line to be routed through the six CTs. Alarm messages including indication on a display device are processed within a maximum of 8 s.

Key features

• Automatic insulation fault location in live IT systems
• Application: main current circuits
• 6 measuring channels with integrated measuring current transformers
• Response sensitivity: 5 mA
• RS-485 interface with BMS protocol (BMS address range 3…90)
• Up to 88 EDS150 on BMS bus → up to 528 monitored circuits
• Cyclical self test

How it works
The locating current pulse generated by the ISOMETER® or PGH passes through the monitored conductors and is picked up by the EDS150's integrated measuring current transformers. The device evaluates these signals to determine the feeder where the insulation fault occurs.

Bus and expansion

• Connection of up to 88 EDS150 devices via RS-485 (BMS) enabling monitoring of up to 528 circuits
• BMS activity indicated by an alarm LED
• Alarm reporting including display indication (e.g. MK2430) within max. 8 s

Applications

• Insulation fault location in AC, AC/DC and DC IT systems
• Monitoring of DC main circuits in industrial plants, power stations and ships

Variants
Type | Supply voltage | Art. No.
EDS150 | AC 17…24 V, 50…60 Hz / DC 14…28 V | B91080103

Optional accessories
Type | Supply voltage | Output voltage | Art. No. | Note
AN410 | AC 90…264 V, 47…63 Hz / DC 120…370 V | DC 24 V, 420 mA | B924209 | Supplies up to six EDS151
AN450 | AC 230 V, 50…60 Hz | AC 20 V, 500 mA | B924201 | Supplies up to six EDS151
AN450-133 | AC 127 V, 50…60 Hz | AC 20 V, 500 mA | B924203 | Supplies up to six EDS151

Downloads (selected)
Datasheet, manual and CE declaration as well as product flyers (EDS150/151 datasheet; EDS150 manual; CE declaration; Healthcare EDS flyer; Industrial EDS flyer).

Technical specifications

• Measuring channels: 6 per EDS150 (integrated measuring current transformers)
• Maximum combined monitoring: 88 EDS150 via RS-485 (BMS) → up to 528 circuits
• Response sensitivity: 5 mA
• Response time (AC, IEC 61557-9): up to 8 s
• Interface: RS-485 with BMS protocol
• BMS address range: 3…90
• Supply voltage (EDS150): AC 17…24 V, 50…60 Hz / DC 14…28 V
• Device art. no. (EDS150): B91080103
• Cyclical self test; alarm LED for BMS activity