Maretron ACM100 用户手册

 

 
2.4.2.3  Three-Phase (Phase A, B, C) Connection 

 

 
 
Use the following instructions when you are connecting the ACM100 to a three-phase “Wye” 
circuit connected via three hot wires and a single neutral (NOTE: Three-phase delta connected 
circuits are not supported by the ACM100). You will need to install three current transformers 
and three user-supplied voltage sense cables. The ACM100 comes with a single current 
transformer so you will need to purchase two optional current sensors (Part # PCT-1000-101-
03) for monitoring this type of system. 
 
Step 1: De-energize the AC Source. 
 
Step 2: The Current Transformer has black and white wires. Install the first Current 
Transformer as follows: 

a.  Connect the black wire to pin 7 (I

A+

) on the ACM100 

b.  Connect the white wire to pin 8 (I

A-

) on the ACM100 

c.  Disconnect the Phase A hot wire from the AC power source and place it through the 

hole in the Current Sensor such that the arrow on the Current Sensor points towards 
the AC power source. Then, reattach the Phase A hot wire to the AC power source. 

 
Step 3: Install the second Current Transformer as follows: 

a.  Connect the black wire to pin 9 (I

B+

) on the ACM100 

b.  Connect the white wire to pin 10 (I

B-

) on the ACM100 

Line (Phase A) 

Neutral 

U.S. 

120 Volts 

60Hz 

+ 

- 

Europe 

220 Volts 

50Hz 

+ 

- 

AC Sour

ce 

1 2 

5

4

3

6

7

8

9 10 11 12

Fus

e

 

V

A

Li

ne

 

V

A

N

eutr

al

 

Current 

Transducer

ACM100 Screw Terminals

V

B

Li

ne

 

V

C

Li

ne 

V

B

N

eutr

al

 

V

C

N

eutr

al

 

I

A+

 

I

A-

 

I

B+

 

I

B-

 

I

C+

 

I

C-

 

Fus

e

 

Current 

Transducer

Fus

e

 

Current 

Transducer

Line (Phase B) 

Line (Phase C)