Installation Guide
Power Monitoring
Series 4100 Modbus
TM
9
Control Power
Direct Connect Control Power (Line to Line)
Direct Connect Control Power (Line to Neutral)
L1 L2 L3
G 1 2
N L1 L2 L3
G 1 2
Line to Line from 90 VAC to 600 VAC (UL). In UL installations the
lines may be floating (such as a delta). If any lines are tied to an
earth (such as a corner grounded delta), see the Line to Neutral
installation limits. In CE compliant installations, the lines must
be neutral (earth) referenced at less than 300 VAC
L-N
Direct Connect Control Power (DC Control Power)
Line to Neutral from 90 VAC to 347 VAC (UL) or 300 VAC (CE)
Control Power Transformer (CPT ) Connection
G 1 2
N L1 L2 L3
G 1 2
DC Control Power from 125 VDC to 300 VDC
(UL and CE max.)
Fuse Recommendations
The Control Power Transformer may be wired L-N or L-L. Output to
meet meter input requirements
Keep the fuses close to the power source (obey local and national code requirements).
For selecting fuses and circuit breakers, use the following criteria:
•
Select current interrupt capacity based on the installation category and fault current capability.
•
Select over-current protection with a time delay.
•
Select a voltage rating sufficient for the input voltage applied.
•
Provide overcurrent protection and disconnecting means to protect the wiring. For AC installations, use Leviton CTV00-
FK3, or equivalent. For DC installations, provide external circuit protection. Suggested: 0.5 A, time delay fuses.
•
The earth connection (G) is required for electromagnetic compatibility (EMC) and is not a protective earth ground.
