Greenlee CMP-200 - Page 20

20
Measurements on Three-Phase Circuits (cont’d)
R (L1)
3ø4W
S (L2)
T (L3)
N
A
3ø
Load
WT (L3)
Calculations
When using the 3ø3W and 3ø4W functions of the CMP-200, the unit automatically performs
the following calculations:
Single-Phase
W
1Ø3W
=W
L1L2N
=W
L1N
+ W
L2N
Three-Phase Three-Wire
W
3Ø3W
=W
RS
+ W
TS
KVAR
3Ø3W
=KVAR
RS
+ KVAR
TS
KVA
3Ø3W
= [KW
3Ø3W
]
2
+ [KVAR
3Ø3W
]
2
PF
3Ø3W
=KW
3Ø3W
KVA
3Ø3W
Three-Phase Four-Wire
W
3Ø4W
=W
R
+ W
S
+ W
T
KVAR
3Ø4W
=KVAR
R
+ KVAR
S
+ KVAR
T
KVA
3Ø4W
= [KW
3Ø4W
]
2
+ [KVAR
3Ø4W
]
2
PF
3Ø4W
=KW
3Ø4W
KVA
3Ø4W