Download Portable Testing Device for Testing of electricity meters User Manual

User Manual
Version 2.0
Power factor
Choose Instantaneous → Display → ϕ, f. The indicator displays:
• cosϕ of each phase (PF1, PF2, PF3) and the angle ϕ in degrees;
• aggregate cosϕ and the angle ϕ in degrees;
• frequency;
•
the angles in degrees between phase voltages:
for 4-wire network (see chapter 5-1): ∠U12(α12), ∠U23(α23), ∠U31(α31);
for 3- wire network (see chapter 5-2): ∠U1(α1), ∠U2(α2), ∠U3(α3).
Vector diagram
Figures 5-1 and 5-2 presents the examples of vector diagrams corresponding to 4-wire and 3wire connection.
U3
I3
ϕ3
I1
α13
α23
α12
ϕ1
U1
ϕ2
I2
U2
Figure 5-1. Example of vector diagram for 4-wire network.
U3
α3
I1
α1
ϕ1
ϕ2
I2
α2
U2
Figure 5-2. Example of vector diagram for 3-wire network.
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U1