Brochure

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POWER!ENGINEERING!
/RENTAL! 26! GRW!SERIES!
The IMD supplement replace the standard differential protection ABB RD2.
The IMD supplements is an insulation monitoring for mobile generators. It monitors the insulation resistance RF of an unearthed AC system of 0V
up to 300 V to earth that is supplied by a mobile generator.
The currently measured insulation resistance is indicated on the LC display. In this way, any changes, for example, when circuits of loads are
connected to the system, can be recognized easily. The maximum permissible system leakage capacitance Cemax is 5 µF..
Model
Type - description
Technical specifications
Image
Available for
all GRW
models
IMD
The IMD is useful to comply with the German
legislation. It is use in many kind of
applications:
Ø IEC 60364-7-717, DIN VDE 0100-717 (2005)
Electrical installations in mobile or
transportable units
Ø DIN VDE 0100-551 (VDE 0100-551), IEC
60364-5-551 Low-voltage generating sets
(mobile generators)
Ø GW 308 “Mobile Stromerzeuger für
Rohrleitungsbaustellen 8/00” (Mobile
auxiliary power generators on pipeline site”)
(DVGW)
Ø BGI 867 (German Berufsgenossenschaft
Information) Auswahl und Betrieb von
Ersatzstromerzeugern auf Bau- und
Montagestellen (Selecting and operating
standby generators on construction and
installation sites)
Operating elements:
1- Power On LED “ON”,
flashes in case of
interruption of the
connecting leads E/KE or
L1/L2
2- Alarm LED “AL1”,
lights when the value falls
below the set response
value Alarm 1 and flashes
in case of interruption of
the connecting leads E/KE
or L1/L2
3- Alarm LED “AL2”, lights when the value
falls below the set response value Alarm 2
and flashes in case of interruption of the
connecting leads E/KE or L1/L2
4- LC display
5- Test button “T”: to call up the self-test.
Arrow up button: parameter change, to move
up in the menu
6- Reset button “R”: to delete stored
insulation fault alarms parameter change, to
move down in the menu
7- “MENU” button: to call up the menu
system. Enter button: to confirm parameter
changes.
• Protection by electrical separation with insulation
monitoring and disconnection
• Two separately adjustable response values
• Connection monitoring system/earth
• Power On LED, alarm LEDs: 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 behavior selectable
• Self-monitoring with automatic alarm
• Multi-functional LC display
• Adjustable response delay
• Two-module enclosure (36 mm)
• Push-wire terminal (two terminals per connection)
IMD
Insulation Monitoring Device