Installation, Operation and Service Manual
LKP Series 4 Channel OEM
© 2019 DynAmp, LLC
Page ix
041593O
SAFETY
This equipment is designed to be connected to hazardous electric voltages. Ignoring the
installation precautions and warnings can result in severe personal injury or equipment
damage. Also, the equipment is heavy and requires special handling procedures to ensure
the safety of both personnel and equipment itself. The following are general guidelines that
should be followed when installing, operation and servicing the Metering Unit and Measuring
Head.
•
All installation, maintenance and service must be performed by qualified technicians who
are familiar with the warnings and instructions of this manual.
•
Always follow all local and plant safety procedures.
•
Service must be performed by qualified technicians only. If use of an oscilloscope
becomes necessary during servicing, the scope must be floating and not grounded. The
Metering Unit is isolated from the mains via the power transformers. If a grounded scope
is used, a hazardous condition is created since current will flow through the probe to
ground.
•
Units are not intrinsically safe. Do not place in explosive atmospheres
•
Do not place in the rain, or under water, or submerge any part of the Measuring Head or
Metering Unit. The Measuring Heads are splash proof but are not waterproof.
•
The surface on which the Measuring Head is mounted must be sound and capable of
supporting the Measuring Head. Fasteners used must be capable of supporting the
weight of the Measuring Head.
•
Make sure that the cables are disconnected from the Measuring Head during
installation.
•
The Measuring Heads are supplied with connector covers, which must be used
whenever the Measuring Head cables are disconnected from the Measuring Head. The
covers are necessary to prevent dust and water from entering the Measuring Heads. The
covers also prevent fingers from contacting the connector pins during installation, which
can carry hazardous voltages if the Measuring Head is installed on a live bus.
•
If the installation is to be made on a "live" bus, the Measuring Head cables must be
disconnected from the Measuring Head. A condition hazardous to the Measuring Head
and any person handling un-insulated cable-lead terminals will result if metal parts of the
Measuring Head contact the bus, or sudden changes in the bus current occur. Personal
protective gear should be worn when reconnecting cable back to Measuring Head.
Please refer to “Installation Considerations” section 4.4 for Measuring head
storage on a live bus.
•
Measuring Head should be electrically isolated from the bus bars. A ¼” (6mm) minimum
distance between the bus and window insulation should be maintained. This will insure
electrical isolation of the Measuring Head structure from the bus. The Measuring Head
itself is grounded via the cables to the Metering Unit. Refer to the “Installation
Considerations” section of the manual for more details.
•
An external circuit breaker or fuse with proper rating is required for branch circuit
protection when wiring the main circuit to this Metering Unit. Each Metering Unit must
have its own breaker. Use a wire and breaker or fuse (time-delay) sized adequately for
the maximum burden of 20 VA/kA of measured current. The wire should have an
insulation rating of 600Vac and 80°C minimum temperature rating.
