Installation, Operation and Service Manual
LKP Series
© 2016 DynAmp, LLC
Page 1
041738 I
1. 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 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 head. Fasteners used must be capable of supporting the weight of the
head.
•
Make sure that the cables are disconnected from the head during installation.
•
The Measuring Heads are supplied with connector covers, which must be used
whenever the head cables are disconnected from the 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 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 head. A condition hazardous to the Measuring Head and any
person handling un-insulated cable-lead terminals will result if metal parts of the 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 section for 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 head structure from the bus. The head itself is
grounded via the cables to the Metering Unit. Refer to the “Installation Consideration”
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.
