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E154713
4-11
4: Electrical Installation
Electro
Industries/GaugeTech
The Leader In Power Monitoring and Smart Grid Solutions
Electro
Industries/GaugeTech
The Leader In Power Monitoring and Smart Grid Solutions
4.5.4.2: Isolating a CT Connection Reversal
For a Wye System, you may either:
• Check the current phase angle reading on the Nexus® 1500+ meter's display (see
Chapter 6). If it is negative, reverse the CTs.
• Go to the Phasors screen of the Communicator EXT
TM
software (see the
Communicator EXT
TM
4.0 and MeterManager EXT Software User Manual
for
instructions). Note the phase relationship between the current and voltage: they
should be in phase with each other.
For a Delta System:
Go to the Phasors screen of the Communicator EXT
TM
software program (see the
Communicator EXT
TM
4.0 and MeterManager EXT Software User Manual
for instruc-
tions). The current should be 30 degrees off the phase-to-phase voltage.
4.5.5: Instrument Power Supply Connections
• Wire gauge: 12-18 AWG for either solid or stranded wire
• Torque: 3.5 Lb-In
• Branch circuit protection size should be 15 A.
The Nexus® 1500+ meter requires a separate power source. There are three control
power options: 115AC, D2 high-voltage, and D low-voltage.
CAUTION:
The power supply connections vary depending on the power
supply Option being used.
CAREFULLY
follow the instructions and
drawings in Sections 4.5.5.1-4.5.5.3 for proper wiring.
Содержание Shark 100T
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