ZL0116-0A
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Installation Guide
Power Monitoring
E50B1A, E50C2A, E50C3A
TM
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 90 VAC to 600 VAC (UL) (520 VAC 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 300 VAC
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:
•
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 is required for electromagnetic compatibility (EMC) and is not a protective earth ground.
L1
N
L2 L3
X2
X1
A
B
C
N
A
B
C
X2
X1
X2
X1
+
-
+
-
+
-
White
Black
White
Black
White
Black
Diagram 5: 3-Phase 4-Wire Wye Direct Voltage Input
Connection 3 CT
Use System Type 40 (3L + 1n)
White
Black
White
Black
White
Black
L1
N
L2 L3
X2
X1
A
B
C
N
A
B
C
X2
X1
X2
X1
+
-
+
-
+
-
Diagram 6: 3-Phase 4-Wire Wye Connection 3 CT
3 PT
Use System Type 40 (3L + 1n)
Wiring (cont.)
