100ADM Current Injection System
Features
Clear and simple user interface
0-100A output current
Current limit mode for fine current
control
True RMS metering with single
cycle capture memory ammeter
Multi-function auto-ranging timing
system
Auxiliary DC and AC output
Large back-lit liquid crystal display
Thermal and over-current protection
Compact and portable
Automatic mains voltage selection
Shoulder carry strap
The 100ADM mk4 provides commissioning and maintenance
engineers with a flexible system for testing protective systems. It
has an easy to understand panel layout and a simple user interface.
The status of every function can be seen at a glance, and there are
no complex menus to navigate.
The 100ADM mk4 keeps the familiar user interface of previous
models but adds a new metering system that accurately measures
the RMS of a single cycle. It also features a new current limit mode
to provide very fine control of low currents, even into low impedance
loads. Current limit mode also assists in testing self-powered
overcurrent protection as fitted to many 11kV ring main units.
The unit has a range of outputs allowing injection of currents as low
as a few mA and as high as 100A. Voltages up to 240V are
available allowing high impedance current relays and voltage relays
to be tested. Four true RMS metering ranges are provided, and the
full scale of the meter (and trip level) can be set independently of
output tap. Industry standard safety connectors are used on all
inputs and outputs for convenience, reliability and safety.
A very flexible two channel timing system is provided, allowing trip
times, reset times and reclose times to be quickly measured to a
high degree of accuracy. The timer auto-ranges to measure from
1ms to 99999.9s.
The back-lit display on the 100ADM mk4 is bright and
clear with a wide viewing angle. The results of a test can
be seen here as they appear on the display.
The outputs of the 100ADM mk4 are well protected. The main
output is protected by overcurrent, duty cycle and thermal trips. The
auxiliary dc supply is protected by a current limit, and the auxiliary
AC supply is fuse protected.
mk4
7
IEEE no. Type
27/59 Under/over voltage
37 Undercurrent
50/76 Instantaneous overcurrent
Ground fault relay
51 IDMT overcurrent relay
59G Neutral voltage displacement
67 Directional overcurrent (basic
tests)
IEEE no. Type
79 Auto recloser
86 Lockout relay
94 Tripping relay
90V Voltage regulating relay
Miniature circuit breakers
Circuit breakers for
equipment
Thermal relays
100ADM mk4 Applications
The unit is supplied
with a comprehensive
lead set in a sturdy
carrying
case.
A 24-220VDC switch-mode stabilised DC supply with current limiting
is provided to power the relay under test. An isolated, separately
switched 110VAC auxiliary supply is also provided.
(2 pages)
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