Measurement specifications – SATEC PM175 Manual User Manual

Page 144

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‎Appendix A Technical Specifications

144

Series PM175 Powermeters

Measurement Specifications

Parameter

Full Scale @ Input

Range

Accuracy

Range

%

Reading

% FS

Conditions

Voltage

120VxPT @ 120V
400VxPT @ 690V

0.2

0.01

10% to 120% FS 0 to 1,150,000 V

Starting voltage
1.5% FS @ 120V
1.5% FS @ 690V

Line current

CT

0.2

0.02

1% - 200% FS

0 to 40,000 A
Starting current 0.1% FS

Active power

0.36

PT

CT @ 120V

1.2

PT

CT @ 690V

0.2

0.02

|PF|

0.5

1

-10,000,000 kW to
+10,000,000 kW

Reactive power

0.36

PT

CT @ 120V

1.2

PT

CT @ 690V

0.3

0.04

|PF|

0.9

1

-10,000,000 kvar to
+10,000,000 kvar

Apparent power 0.36

PT

CT @ 120V

1.2

PT

CT @ 690V

0.2

0.02

|PF|

0.5

1

0 to 10,000,000 kVA

Power factor

1.000

0.2

|PF|

0.5,

I

2% FSI

-0.999 to +1.000

Frequency

0.02

40 Hz to 70 Hz

Total Harmonic
Distortion, THD

V (I), %Vf (%If)

999.9

1.5

0.1

THD

1%,

V (I)

10% FSV

(FSI)

0 to 999.9

Total Demand
Distortion, TDD,

%

100

1.5

TDD

1%,

I

10% FSI

0 to 100

Active energy
Import & Export

Class 0.2S under conditions as per IEC
62053-22:2003

0 to 999,999.999 MWh

Reactive energy
Import & Export

Class 0.2S under conditions as per IEC
62053-22:2003, |PF|

0.9

0 to 999,999.999 Mvarh

Apparent energy

Class 0.2S under conditions as per IEC

62053-22:2003

0 to 999,999.999 MVAh

1

@ 80% to 120% of voltage FS, 1% to 200% of current FS, and frequency 50/60 Hz

PT - external potential transformer ratio
CT - primary current rating of external current transformer

FSV - voltage full scale
FSI - current full scale

Vf - fundamental voltage

If - fundamental current

NOTES

1. Accuracy is expressed as

(percentage of reading + percentage of full scale)

1 digit. This does not include inaccuracies introduced by the user's potential and
current transformers. Accuracy calculated at 1second average.
2. Voltage and Current measurement accuracy is

0.05 % at nominal value

3. Specifications assume: voltage and current waveforms with THD

5% for kvar,

kVA and PF, and reference operating temperature 20

C - 26

C.

4. Measurement error is typically less than the maximum error indicated.

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