888-2406-002
2-13
WARNING: Disconnect primary power prior to servicing.
Installation & Initial Turn-On
2.5.6
Transmitter AC Connections
The AC input for the transmitter should be low impedance, 50/60 Hz, single or three
phase depending on transmitter phase supply with sufficient capacity to supply the
transmitter. Refer to the “Z2 Outline Drawing” in the drawing package for current
ratings, nominal fuse sizes and wire gauge for the 3 phase delta, 4 wire wye, and
single phase input voltage combinations. For more information on AC mains
requirements see “Power Distribution for Optimum Transmitter Performance”
at the end of this section.
The recommended fuse type is class RK5, a dual element time delay fuse. Examples
are the Bussmann FRN-R (250V), FRS-R (600V), Littelfuse FLNR (250V), FLSR
(600V), and Ferraz gG fuses. If you prefer to use a circuit breaker in your
installation, select one with a motor-starting trip curve, similar to the RK5 curve for
fuses. This type of delayed response is needed in order to accommodate the
momentary in-rush current. This can be 300 to 600 amps, depending on the
transmitter model and AC configuration.
!
WARNING:
DISCONNECT AND LOCK OUT STATION PRIMARY POWER TO TRANSMITTER
BEFORE ATTEMPTING ANY CONNECTIONS.
NOTE:
Proper wire size information is available on the Cabinet Outline Drawing in
the drawing package. Observe maximum specified ratings for safe operation.
A customer supplied AC primary power disconnect or means to completely de-
energize the transmitter primary circuit for servicing is necessary.
2.5.6.1 Information concerning some 360 to 416 volt systems
This transmitter is equipped with MOVs (metallic oxide varistors) which provide a
measure of protection against incoming overvoltage transients. However, the
selection of some of the MOVs relies upon knowing the approximate voltage from
each AC phase to ground. Unfortunately a few AC power systems around the world
do not have a direct connection to earth ground, thereby making it impossible to
predict the phase-to-earth ground voltage.
In a typical 380 volt system that has a connection to earth ground, each AC phase
will measure about 220 volts to ground. The phase-to-phase, and phase-to-ground
voltages should be balanced within a few percent.
However, in a system which has no direct connection to earth ground, each AC
phase will measure a voltage which follows no particular pattern. In such a case, the
Summary of Contents for Platinum Z2 CD
Page 4: ...888 2406 002 WARNING Disconnect primary power prior to servicing ...
Page 6: ...888 2406 002 WARNING Disconnect primary power prior to servicing ...
Page 8: ...888 2406 002 WARNING Disconnect primary power prior to servicing ...
Page 10: ...888 2406 002 WARNING Disconnect primary power prior to servicing ...
Page 70: ...3 14 888 2406 002 WARNING Disconnect primary power prior to servicing Operator Guide ...
Page 130: ...4 60 888 2406 002 WARNING Disconnect primary power prior to servicing Overall System Theory ...
Page 194: ...6 38 888 2406 002 WARNING Disconnect primary power prior to servicing Troubleshooting ...
Page 196: ...7 2 888 2406 002 WARNING Disconnect primary power prior to servicing Parts List ...
