Regulus uREG, User Manual

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uREG User Manual
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7.6. VT-0 / VT-5 MODULE (SLOT 2)
The VT-0 module houses 4 measuring voltage transformers for U0, U1, U2, U3 and 2 current
transformers for I0 and Ig. The module additionally has 3 unipolar digital inputs (AUXI 0..2),
which can be also used for analogue measurements (sensitivity threshold selectable by setting).
Terminals of the
VT-0 module are grouped into 3 x Phoenix-Contact/Wieland slots:

8-pin MSTBA2.5/8-G strip (pitch: 5.00 mm, max 12 A, 250 V)
for measurement of
U0, U1, U2, U3 voltages within the range (Un: 100 V) = 0 ÷ 130 V;

5-pin MSTBA2.5/5-G strip (pitch: 5.00 mm, max 12 A, 250 V)
for
AUXI0, AUXI1, AUXI2 inputs = 0 ÷ 130 V;

4-pin GMSTBA2.5/4-G strip (pitch: 7.50 mm, max 12 A, 400 V)
for measurement of currents
I0, Ig within the range (In: 1 A) = 0 ÷ 10 A.
Fig. 7.6. Terminals of the VT-0 module.
The VT-0 module (combined with CT-0 ) is required for fulfillment of the following protective
criteria and functions, e.g.:

Overvoltage U>

Tripped overvoltage U>T

Overvoltage U0>

Undervoltage U< • Undervoltage U< (polygonal characteristic curve)

Tripped undervoltage U<T • Single-phase undervoltage U<

Frequency • Power directional

Frequency derivative df/dt> • Vector Shift

Second harmonic f100Hz> • capacitor bank /BKR/ control

AWSCz automatic unit controller • Resistor controller

U1>, U2>, U3> for MSK

Internal fSPZ/SCO

Overcurrent earth-fault criterion I0> • Directional overcurrent earth-fault I0k>

Overcurrent Ig>

Susceptance B0kier.>

Conductance G0> • Conductance G0>kier.

Admittance Y0>

Admittance YY0>

Overpower for 3-phase reactive power (1 min.) Q3f> • Underpower for 3-phase reactive power (1 min.) Q3f<

Overpower for 3-phase active power (1 min.) P3f> • Underpower for 3-phase active power (1 min.) P3f<
The VT-5 module is identical in terms of functionality, but it features increased measurement
threshold for voltages U0, U1, U2, U3 within the range 5 – 260 V (optionally 500 V AC) .