Hioki PQ3198 - Page 248

13.8 Calculation Formula
242
-12. Active energy (WP), reactive energy (WQ)
Single Phase 2-wire
1P2W
Single Phase
3-wire
1P3W
3-Phase,
3-Wire,
2-Measure-
ment
3P3W2M
3-Phase,
3-Wire,
3-Measure-
ment
3P3W3M
3-Phase,
4-Wire
3P4W
WP+
WP1+= WPsum+=
• h: measurement period; k: coefficient for converting to 1 hour
• (+): Value is only used when positive (consumptio
n).
WP-
WP1-= WPsum
-=
• h: measurement period, k: coefficient converted to 1 hour
• (-): Value is only used when negative (regeneration).
WQLAG
WQ
Lag
=
WQ
LAG
=
• h: measurement period, k: coefficient converted to 1 hour
• (+): Value is only used when positive (lag).
WQLEAD
WQ
LEAD
=
WQ
LEAD
=
• h: measurement period, k: coefficient converted to 1 hour
• (-): Value is only used when negative (lead).
Phase System
Items
HIOKI PQ3198A961-02