Installation, Operation and Service Manual LKAT
2
Portable
© 2018 DynAmp, LLC Page 4
047312 A
The LKAT
2
Metering Unit consists of a power supply and Main pc board mounted together
on a steel U-chassis. Input, output, and power connections are made via pc board edge
connector plugs.
The Metering Unit features include:
• One analog output signal
• One configurable current level alarm with LED indication
• One Accuracy Diagnostics Alarm with LED indication
The system includes:
• Mains power adaptor with EU and US/Japan cords.
• Instrumentation signal output cable with banana jacks for connection to user’s
measurement instrumentation.
• Plug-on adaptors to convert mA measurement signal to a variety of voltage signals for
user’s instrumentation.
• 1 year warranty
• Hard Side Carrying Case
AVAILABLE OPTIONS
• Protection Extensions ( PE )
The PE option adds additional functionality for protecting high current rectifiers. This option
is either factory configured with a new system or can be added to LKAT
2
Systems already in
the field. If added in the field, some field configuration may be required.
Second Freely Scalable Analog Output :
This second analog output is independently scaled and fully isolated from the standard
LKAT2 measurement output. In typical applications, it is scaled to provide accurate
measurement above the standard rectifier operating range for advanced protection
purposes. For example, the primary LKAT
2
output may be scaled to 50kA to provide the
highest degree of accuracy and resolution for normal rectifier control. The second PE
output may be scaled to 75kA to provide the information to intelligently manage overcurrent
situations. Using this signal, the rectifier control system could integrate overcurrent
operation to allow 5 minutes at 110%, 1 minute at 120%,10 sec at 140%.
Two Additional Protection Relays :
These relays bring the total number of configurable relays to three. Each can be configured
to provide reverse or various degrees of overcurrent protection. Like the standard alarm,
these two additional PE alarms come with their own, independent local LED indication and
relay outputs.
• Digital current display ( 3 1/2 digit )
This option is mounted behind the clear front door of the metering electronics enclosure to
display either DC or RMS AC bus current locally.
Please note that this option reduces the
maximum metering electronics ambient temperature to 50ºC. This option can also be
added to LKAT
2
Systems already in the field.
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