Doc# E166703 4-6
4: Electrical Installation
Electro Industries/GaugeTech
The Leader In Power Monitoring and Smart Grid Solutions
Electro Industries/GaugeTech
The Leader In Power Monitoring and Smart Grid Solutions
Electro Industries/GaugeTech
The Leader In Power Monitoring and Smart Grid Solutions
4.5: Wiring the Monitored Inputs - Currents
The cables to the current inputs shall be rated for a minimum of 600 V AC and 10 A
(14 AWG copper cable, cross sectional area of 2.08mm
2
).
Mount the current transformers (CTs) as close as possible to the MP200 unit’s meters.
The following table illustrates the maximum recommended distances for various CT
sizes, assuming the connection is via 14 AWG copper cable.
WARNING! DO NOT leave the secondary of the CT open
when primary current is flowing. This may cause high volt-
age, which will overheat the CT. If the CT is not connected, pro-
vide a shorting block on the secondary of the CT.
AVERTISSEMENT! NE PAS laisser le transformateur de courant secondaire
ouvert lorsque le courant primaire est fluent. Cela peut provoquer une haute ten-
sion qui surchauffera le transformateur de courant. Si ce dernier n'est pas branché,
fournir un court-circuit sur le transformateur de courant secondaire.
EIG highly recommends using shorting blocks to allow removal of the MP200 unit
from an energized circuit, if necessary (see 4.7: Removing the MP200 Unit From Ser-
vice/Reinstalling the MP200 Unit, on page 4-15, for instructions). EIG recommends
using a three phase shorting block for every three phase load. An example of that
shorting block is the EI SB-6TC, shown on the next page. It can be ordered from our
website: https://electroind.com/product/sb-6tc/.
You will need 8 shorting blocks for the 8 three phase circuits.
CT size
(VA)
Maximum
Distance from CT
to MP200 Unit’s
Meters (Ft)
2.5 10
515
7.5 30
10 40
15 60
30 120
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