Deif MTR-3 - Basic electrical measurements; Phase measurements; Phase-to-phase measurements; Energy measurements

MTR-3 Installation Instructions
DEIF A/S Page 25 of 51
Basic measurements
Designat.
Unit
1b
3b
3u
4b
4u
Phase
Apparent power S
1
S1
VA
●
×
×
●
●
Apparent power S
2
S2
VA
×
×
×
○
●
Apparent power S
3
S3
VA
×
×
×
○
●
Total apparent power S
t
S
VA
●
●
●
○
●
Power factor PF
1
PF1/ePF1
●
×
×
●
●
Power factor PF
2
PF2/ePF2
×
×
×
○
●
Power factor PF
3
PF3/ePF3
×
×
×
○
●
Total power factor PF
~
PF/ePF
●
●
●
○
●
Power angle φ
1
φ1
°
●
×
×
●
●
Power angle φ
2
φ2
°
×
×
×
○
●
Power angle φ
3
φ3
°
×
×
×
○
●
Total power angle φ
~
φ
°
●
●
●
○
●
THD of phase voltage U
f1
U1 %
%THD
●
×
×
●
●
THD of phase voltage U
f2
U2 %
%THD
×
×
×
○
●
THD of phase voltage U
f3
U3 %
%THD
×
×
×
○
●
THD of phase current I
1
I1 %
%THD
●
●
●
●
●
THD of phase current I
2
I2 %
%THD
×
○
●
○
●
THD of phase current I
3
I3 %
%THD
×
○
●
○
●
Phase-to-phase
Phase-to-phase voltage U
12
U12
V
×
●
●
○
●
Phase-to-phase voltage U
23
U23
V
×
●
●
○
●
Phase-to-phase voltage U
31
U31
V
×
●
●
○
●
Average phase-to-phase voltage (U
ff
)
U
V
×
●
●
○
●
Phase-to-phase angle φ
12
φ12
°
×
×
×
○
●
Phase-to-phase angle φ
23
φ23
°
×
×
×
○
●
Phase-to-phase angle φ
31
φ31
°
×
×
×
○
●
THD of phase-to-phase voltage U
12
U12 %
%THD
×
●
●
○
●
THD of phase-to-phase voltage U
23
U23 %
%THD
×
●
●
○
●
THD of phase-to-phase voltage U
31
U31 %
%THD
×
●
●
○
●
Energy
Counters 1−4
E1, E2,
E3, E4
Wh
VAh
VArh
● ● ● ● ●
Active tariff
Atar
●
●
●
●
●
Max. values MD
MD current I
1
I1
A
●
●
●
●
●
MD current I
2
I2
A
×
○
●
○
●
MD current I
3
I3
A
×
○
●
○
●
MD active power P (positive)
P+
W
●
●
●
●
●
MD active power P (negative)
P−
W
●
●
●
●
●
MD reactive power Q−L
Q
VAr
●
●
●
●
●
MD reactive power Q−C
Q
VAr
●
●
●
●
●
MD apparent power S
S
VA
●
●
●
●
●
● – supported ○ − calculated × − not supported
For 3b and 3u connection modes, only phase-to-phase voltages are measured.
Because of that, factor √3 is applied to calculation of quality considering nominal
phase voltage.
For 4u connection mode, measurement support is the same as for 1b.