Power quality/harmonics display, St s t – SATEC PM174 Manual User Manual

Page 39

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Chapter 3 Display
Operations

Data Display

Series PM174 Powermeters

39

Power Quality/Harmonics Display

Press the PQ/ESC button. The THD/TDD LED is illuminated.
Press the button again to move to the individual harmonics, or
to the flicker and unbalance displays. Use the UP and DOWN
arrow buttons to scroll through harmonics and power quality

measurements.

Note that voltage harmonics readings are line-to-neutral in the
4LN3, 3LN3 and 3BLN3 wiring modes, and line-to-line in all
other modes.

Total Harmonics

1



thd.

V1/V12 THD
V2/V23 THD
V3/V31 THD

Voltage THD

2



thd.

I1 THD
I2 THD
I3 THD

Current THD

3



tdd.

I1 TDD
I2 TDD
I3 TDD

Current TDD

4


HF

I1 K-Factor
I2 K-Factor

I3 K-Factor

Current K-Factor

Individual Voltage Harmonics

1



02H

V1/V12 HD%
V2/V23 HD%
V3/V31 HD%

Order 2 harmonic
distortion

2



03H

V1/V12 HD%
V2/V23 HD%
V3/V31 HD%

Order 3 harmonic
distortion

39



40H

V1/V12 HD%
V2/V23 HD%
V3/V31 HD%

Order 40 harmonic
distortion

Individual Current Harmonics

1



02H

I1 HD%
I2 HD%
I3 HD%

Order 2 harmonic
distortion

2



03H

I1 HD%
I2 HD%
I3 HD%

Order 3 harmonic
distortion

39



40H

I1 HD%
I2 HD%
I3 HD%

Order 40 harmonic
distortion

Flicker/Unbalance

1



Pst

V1 Pst
V2 Pst
V3 Pst

Short term flicker

2



Plt

V1 Plt
V2 Plt
V3 Plt

Long term flicker

3

U.Unb

V% unb


Voltage negative
sequence unbalance,
percent

S

T

S

T

PQ

ESC

S

T

PQ

ESC

PQ

ESC

S

T

PQ

ESC

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