KMB NOVAR 2600, Руководство по эксплуатации

Страница: 51 / 96

NOVAR 2600 Operating Manual
4.4.5.2 Setup
In the Installation group of parameters following two parameters must be set.
4.4.5.2.1 Connection Type 1Y3 / 1D3
If network
phase-to-line
voltage is connected to the U1 (No.12) and N (No. 11) terminals, or such
voltage appears on internal voltage divider when the N terminal is free, the 1Y3 connection type must
be set.
If network
phase-to-phase voltage is connected to the U1 and N the 1D3 must be set.
Connection type parameter must be set correctly even if use of the automatic connection
detection process (ACD) is supposed. Otherwise result of the process would fail and
measured powers and power factor would be false !
4.4.5.2.2 Angle of Voltage Connected to the U1 Input ( U1-Angle )
In the single-phase mode, the controller evaluates three-phase power factor on the basis of the
voltage connected to the U1 input and a current connected to the I1 input only.
Generally, it is not necessary to connect voltage(s) and current of the same phase; for example, you
can connect the L1-phase current and the L2- or the L3-phase voltage, even with opposite polarity.
If a line-to-line voltage is connected, or line-to-neutral voltage of different phase than current, or the
voltage and current signal with opposite polarity, there exists phase shift between the voltage and the
current signals even at power factor equal to 1. Controller must respect this angular displacement, so
it must be specified correctly, otherwise it would evaluate wrong power factor.
The value of the angular displacement is defined as a combination of measurement network phases
connected to the U1 and N controller terminals. It is assumed that the CT is mounted in the L1 phase
of measured network and its orientation (terminals S1, S2) corresponds to real orientation supply -
>load . The angle of voltage is then assigned one of six combinations shown in the table below.
Tab. 4.7 : U1 Angle – Setup Options
1Y3 connection type
(phase-to-neutral voltage – LN)
1D3 connection type
(phase-to-phase voltage – LL)
No. U1 angle No. U1 angle
1 L1-0 (0°) 1 L1-L2 (-30°)
2 L2-0 (120°) 2 L2-L3 (90°)
3 L3-0 (-120°) 3 L3-L1 (-150°)
4 0-L1 (180°) 4 L2-L1 (150°)
5 0-L2 (-60°) 5 L3-L2 (-90°)
6 0-L3 (60°) 6 L1-L3 (30°)
Notes :

CT supposed in the L1 phase with correct orientation (S1, S2 terminals)

the U1 angle expressed as „x-y“ where the „x“ means the phase connected to the U1 terminal
and the „y“ phase connected to the N terminal (=0)
If the current signal is from opposite side of the power supply transformer than the voltage
signal, the U1 angle must be set with respect to the transformer phase angle.
51