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Installation Guide
Power Monitoring
E50H2A, E50H5A
Supported System
Types
Number
of wires
Single-Phase Wiring
2
2
3
Three-Phase Wiring
3
4
Wiring Symbols
ZL0117-0D
Page 7 of 28
Alta Labs, Enercept, Enspector, Hawkeye, Trustat, Aerospond, Veris, and the Veris 'V' logo are trademarks or registered trademarks of Veris Industries, L.L.C. in the USA and/or other countries.
The E50HxA power meters have a number of different possible system wiring configurations (see Wiring section). To configure the
meter, set the System Type via the User Interface or by writing the Present_Value of AV2 with the System Type value in the table
below. The System Type tells the meter which of its current and voltage inputs are valid, which are to be ignored, and if neutral
is connected. Setting the correct System Type prevents unwanted energy accumulation on unused inputs, selects the formula
to calculate the Theoretical Maximum System Power, and determines which phase loss algorithm is to be used. The phase loss
algorithm is configured as a percent of the Line-to-Line System Voltage (except when in System Type 10) and also calculates the
expected Line to Neutral voltages for system types that have Neutral (12 & 40).
Values that are not valid in a particular System Type display as "----" on the User Interface or as QNAN in the BACnet objects.
CTs
Voltage Connections
Qty
ID
Qty
ID
Type
1
A
2
A, N
L-N
1
A
2
A, B
L-L
2
A, B
3
A, B, N
L-L with N 12
3
A, B, C 3
A, B, C
Delta
3
A, B, C 4
A, B, C, N Grounded
To avoid distortion, use parallel wires for control power and voltage inputs.
The following symbols are used in the wiring diagrams on the following pages.
Symbol
Voltage Disconnect Switch
Fuse (installer is responsible for ensuring compliance with local requirements. No
fuses are included with the meter.)
Earth ground
Current Transducer
X1
X2
Potential Transformer
Protection containing a voltage disconnect switch with a fuse or disconnect circuit
breaker. The protection device must be rated for the available short-circuit current at
the connection point.
NOTICE
RISK OF EQUIPMENT DAMAGE
• This product is designed only for use with U018 series current transducers (CTs).
• DO NOT USE CURRENT OUTPUT (e.g. 5A) CTs ON THIS PRODUCT.
Failure to follow these instructions can result in equipment damage.
©2013 Veris Industries USA 800.354.8556 or +1.503.598.4564 / support@veris.com
Other companies' trademarks are hereby acknowledged to belong to their respective owners.
System Type
BACnet object
User Interface:
AV2
SETUP>S SYS
10
1L + 1n
11
2L
2L + 1n
31
3L
40
3L + 1n
Wye
Description
Phase Loss Measurements
VLL
VLN
Balance
AN
AB
AB
AN, BN
AN-BN
AB, BC, CA
AB-BC-CA
AB, BC, CA
AN, BN, CN AN-BN-CN &
AB-BC-CA
TM
Wiring
Diagram
Diagram
number
1
2
3
4
5, 6
08131
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