Basler BE1-11g Instruction Manual page 64

52
Terminals Va (C13), Vb (C14), and Vc (C15) are connected in parallel. The single-phase signal is
connected between the parallel group and terminal N (C16).
For single-phase sensing connections derived from a phase-to-phase source:
Terminals Vb (C14), Vc (C15), and N (C16) are connected in parallel. The single-phase signal is
connected between terminal Va (C13) and the parallel group.
Note that the voltage monitor (described below) performs three of three testing for all connections. For
3W and 4W, phases A, B, and C are actually tested. For single-phase connections, the terminals are
connected in parallel as described above and the single-phase is tested three times.
The Aux VT Connection must be properly selected on the Sensing
Transformers screen in BESTCOMSPlus. Refer to the Configuration
chapter for more information on this setting.
Angle Compensation
Compensation for phase angle differences between the phase and auxiliary VT connections (including
single-phase VTP connections) are possible with the Angle Compensation setting. That is, for a VTP
selection of phase-to-phase and a VTX selection of phase-to-neutral, a value of 30° should be defined for
angle compensation.
Common system and sensing transformer combinations are shown in Table 11. This table assumes no
step-up or step-down transformer between the two measurement PTs. If the synchronizing zone includes
a step-up or step-down transformer, change the nominal voltages accordingly.
Table 11. Common System and Sensing Transformer Combinations
Phase VT Phase
Connection Rotation
3-wire ABC
3-wire ABC
3-wire ABC
3-wire ACB
3-wire ACB
3-wire ACB
4-wire ABC
4-wire ABC
4-wire ABC
4-wire ABC
4-wire ABC
4-wire ABC
4-wire ACB
4-wire ACB
4-wire ACB
4-wire ACB
4-wire ACB
4-wire ACB
Sync-Check (25) Protection
Caution
Secondary
Aux VT
Phase Voltage
Connection
(Phase-Neutral)
AB 69.3
BC 69.3
CA 69.3
AB 69.3
BC 69.3
CA 69.3
AN 69.3
BN 69.3
CN 69.3
AB 69.3
BC 69.3
CA 69.3
AN 69.3
BN 69.3
CN 69.3
AB 69.3
BC 69.3
CA 69.3
9424200994 Rev U
Secondary Angle
Aux Voltage Compensation
120
120 240°
120 120°
120
120 120°
240°
120
69.3
69.3 240°
69.3 120°
120 30°
270°
120
120 150°
69.3
69.3 120°
69.3 240°
330°
120
120 90°
120 210°
0°
0°
0°
0°
BE1-11g