Справочник Пользователя для Hoyt Welding System KW4000
WIRING INSTRUCTIONS
1. All wiring to this meter must comply with National Electric Code or any local codes that are
applicable. A grounding conductor must be installed and connected to the ground lug located
under the terminal cover in the meter.
under the terminal cover in the meter.
2. The voltage wires connected to the line terminals in the meter can be No. 14 gage. The load
for the meter is .03 Amps. Either 5 Amp in-line fuses or a 15 Amp circuit breaker with a
locking handle should protect the voltage leads.
locking handle should protect the voltage leads.
3. The extended wires from the meter to the current transformers can be #16 gauge stranded
wire up to 100’and 14 to 200’ distance. The voltage and the current wires can be in the same
conduit, if you twist the current wires. The CT leads must be shunted if the CT is to be
installed before the meter arrives, or if the meter is taken out of service. Never leave the CT
leads open on an energized circuit drawing current. Exception is the NMI-1250 split core
current sensors. The secondary output of this split core is 110 mv, not current. In this case
the black and white wires are capped separately if meter is not connected.
conduit, if you twist the current wires. The CT leads must be shunted if the CT is to be
installed before the meter arrives, or if the meter is taken out of service. Never leave the CT
leads open on an energized circuit drawing current. Exception is the NMI-1250 split core
current sensors. The secondary output of this split core is 110 mv, not current. In this case
the black and white wires are capped separately if meter is not connected.
4. Form all wires neatly within the field termination area provided. An extra row of CT
terminals are provided if paralleling is required. Both the voltage and the current terminals
are removable if field-testing is required in the future. Please check carefully all
connections before energizing meter.
are removable if field-testing is required in the future. Please check carefully all
connections before energizing meter.
Solid Core Current Transformers
1. Solid Core CTs up to 400 Amps is supplied with this meter. The LX 400 Amp CT works in
a range of 4 to 400 Amp. The solid core CTs are more accurate than the split core and are
much smaller. Split Cores are available if the power cannot be turned off. The (H1) or white
dot, depending on the manufacture, faces the line side of the service.
much smaller. Split Cores are available if the power cannot be turned off. The (H1) or white
dot, depending on the manufacture, faces the line side of the service.
The black wire connects to the CT terminal (B) and the white wire connects to CT terminal (W).
Note: Shunt the black and white wires if the CT is installed and the meter has not been connected. Twist the
black and white wires independently from each CT.
black and white wires independently from each CT.
5.