A5. Voltage Measurement And Power Supply Connection - ABB RVT Serie Instrucciones De Instalación Y De Funcionamiento

External input activated
(*) For more information regarding the Reset-Delay and ON-delay parameters, a
complete description is available in paragraph 4.3.1.1.

A5. Voltage measurement and power supply connection

This appendix provides a practical way to connect voltage measurement to the RVT
when it is the same as the RVT voltage supply.
Description
As shown on the
other terminals for its voltage measurement input.
The RVT does not use its power supply voltage to perform the voltage measurement.
Voltage measurement is performed only through the dedicated voltage measurement
input terminals.
If the RVT auxiliary power supply and the voltage measurement signal are from the same
source, a bridge between the corresponding terminals can be done:
Bridge connection (practical proposal)
Due to limited space, it is not possible to insert two cables in a single slot. Hence
alternate methods may be used to connect two wires to a common terminal.
Several practical ways exist to perform this connection properly. One of these solutions
is described on
On each voltage supply cable, a double entry terminal has to be used to insert a second
cable needed to make the bridge.
These terminals and the corresponding crimping tool are usually available worldwide.
This rule allows a hunting effect due to resonance
phenomena to be avoided.
- Opens alarm relay immediately.
- Restart normal behavior after a time equal to ON-
Delay(*).
Figure 57, the RVT has two terminals for its power supply and three
Figure 57: Terminals
Figure 58.
Manual Power Factor Controller RVT ç Appendices 73