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03112
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TM
E51
INSTALLATION GUIDE
CONTROL POWER
Direct Connect Control Power (DC Control Power)
L1
N
L2 L3
1 2
G
L1
N
L2 L3
1 2
G
L1
1 2
G
L2 L3
Direct Connect Control Power (Line to Neutral)
Line to Neutral from 90 VAC to 347 VAC (UL) or 300 VAC (CE)
1 2
G
Control Power Transformer (CPT) Connection
Direct Connect Control Power (Line to Line)
Line to Line from 90VAC to 600VAC (UL) (520VAC for CE). 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 300VAC
L-N
The Control Power Transformer may be wired L-N or L-L. Output to meet meter input requirements
DC Control Power from 125 VDC to 300 VDC (UL and CE max.)
Fuse Recommendations:
Keep the fuses close to the power source (obey local and national code requirements).
For selecting fuses and circuit breakers, use the following criteria:
• Current interrupt capacity should be selected based on the installation
category and fault current capability.
• Over-current protection should be selected with a time delay.
• The voltage rating should be sufficient for the input voltage applied.
• Provide overcurrent protection and disconnecting means to protect the
wiring. For AC installations, use Veris AH02, AH03, AH04, or equivalent.
For DC installations, external circuit protection must be provided.
Suggested: 0.5 A, time delay fuses.
• The earth connection is required for electromagnetic compatibility (EMC)
and is not a protective earth ground.
