Installation, Operation and Service Manual
LKP Series
© 2016 DynAmp, LLC
Page 5
041749 K
3. DESCRIPTION
3.1 OVERVIEW
The DynAmp, LLC LKP Series 16 Channel are systems for accurately measuring direct
current in a bus. The Models in this series are: LKP-180, LKP-300 and LKP-400. Each
model consists of a Measuring Head, a Metering Unit, and multi-conductor cables.
3.2 MEASURING HEAD
A magnetic core encircles the bus passing through the center of the Measuring Head.
Magnetic null detectors are mounted in air gaps in the core. Each null detector is flanked
by coils located on the magnetic core.
The Measuring Heads are constructed of cast aluminum with a tough powder coating
finish, insulation from the bus being provided by a 3/8 in. (9.5mm) layer of high-grade
polymer.
The LKP 16 channel Measuring Heads are provided with mounting feet as standard
equipment. The mounting feet facilitate the mounting of the heads vertically on the floor or
on a platform.
3.3 METERING UNIT
The Metering Unit is housed in a standard NEMA type enclosure (An IP54 upgrade is
available). In addition to the electronic circuitry (housed within four modular units), the
Metering Unit contains terminals for all external connections. The Metering Unit requires
120/240 Vac (other voltages available), 50 or 60 Hz power. Burden on the supply circuit
will not exceed 8000VA (LKP-400) under normal operating conditions (about 20VA/kA). A
thermo-magnetic circuit breaker is mounted on the inside of the enclosure and serves as
the power on-off control.
3.4 CABLE
Standard interconnecting cables are supplied with each system such that the distance
between the cabinet and the head is approximately 33 feet (10 meters), without regard to
which side of the head the Metering Unit is installed (longer cable lengths are available -
consult the factory for details). Each of the individual conductors is tagged with a
numbered label corresponding to a terminal block connection, providing an easy hookup to
the Metering Unit. Keyed connectors are provided on the Measuring Head side of the
cables to ensure correct hookup.
