OVERVIEW
Description
When combined with the R 449 or R 452 or R448, the R 729 has the following functions:
Regulation functions
- Regulates PF or kVAr when the alternator is in parallel with the mains (2F).
- Matches alternator voltage to the mains voltage before connection (3F). The alternator can be installed on its own or in parallel with other alternators.
4/20mA function
- Receives a 4/20mA current in order to:
- replace the stator voltage, alternator PF or alternator kVAr set point,
- control the PF or kVAr at a precise point of the installation (mains PF).
Limitation
- Limits the no load or full load minimum excitation current.
- Limits the maximum excitation current when the alternator is short-circuited.
- Limits the stator current.
Fault detection
- detects stator over voltage.
- detects a faulty rotating diode.
- LED signalling of functions 3F, 2F(alternator PF), 2F(kVAr), mains PF and 4/20mA
- LED and contact signalling of a rotating diode fault, a stator over voltage, a minimum excitation current, a maximum excitation current or a maximum stator current
- Absence of 4/20mA current signalled by contact
The board is encapsulated in a box. It can be mounted in the alternator terminal box. The R 729 will always be mounted in proximity to the R 449 or R 452 or R448 units (Max 5m)