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E51C2A, E51C3A Installation Guide
Wiring (cont.)
Control Power
ZL0122-0D
Page 9 of 34
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Diagram 5: 3-Phase 4-Wire Wye Direct Voltage Input
Connection 3 CT
Use System Type 40 (3L + 1n)
N
L1
L2 L3
White
X1
Black
White
X2
X1
Black
X2
X1
X2
Direct Connect Control Power (Line to Line)
L1
L2 L3
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
Direct Connect Control Power (DC Control Power)
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:
• 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 Veris AH02,
AH03, AH04, 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.
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Other companies' trademarks are hereby acknowledged to belong to their respective owners.
Diagram 6: 3-Phase 4-Wire Wye Connection 3 CT
N
L1
A
B
C
N
X1
A
X2
X1
B
X2
White
X1
C
Black
X2
Direct Connect Control Power (Line to Neutral)
G
1 2
N
L1
L2 L3
Line to Neutral from 90 Vac to 347 Vac (UL) or 300 Vac (CE)
L-N
Control Power Transformer (CPT) Connection
G
1 2
N
L1
L2 L3
The Control Power Transformer may be wired L-N or L-L. Output to
3 PT
Use System Type 40 (3L + 1n)
L2 L3
X1
White
Black
White
X1
X2
Black
X2
X1
White
Black
X2
meet meter input requirements
TM
A
B
C
N
X1
A
X2
X1
B
X2
X1
C
X2
G
1 2
G
1 2
0818
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