7
Installation and maintenance
D510 C
Automatic Voltage Regulators (AVRs)
4243 en - 2012.10 / e
LEROY-SOMER
• Power: It varies according to the type of
eld excitation (3 types).
- AREP: The AVR is powered by two auxiliary
windings which are independent of the
voltage sensing circuit.
The rst winding has a voltage in proportion
with that of the alternator and the second
has a voltage in proportion with the stator
current.
- PMG: A permanent magnet generator
(PMG) added to the alternator supplies the
AVR with voltage which is independent of
the main alternator winding.
- SHUNT: The AVR is powered by the main
winding (140 V – 50/60 Hz).
10A fast fuses externally mounted
the D 510C must be used in the three
cases.
• Battery: This is used to supply the AVR
with between 11 V and 30 V. It must always
be present.
The battery supply must be
protected by a 1 A temporised fuse•
• Mains: This input is dedicated to the
measure phase-to-phase mains voltage
which will be taken as the reference when
voltage matching is performed.
• Alternator voltage: This input measures
the alternator output voltage to the AVR in:
- three-phase (U, V, W)
- single-phase (V, W)
• Current transformer(s): This input
measures the current supplied by the
alternator. It must always be present when
the alternator is running in parallel operation
or at PF or KVAR regulation or stator current
limitation.
• The possible congurations are:
- 1 CT on phase U
- 3 CTs on phases U, V and W
• Temperature sensor(s): These are used
to measure the alternator temperature and
alert the user if there is a rise in temperature.
This measurement can be taken either with
1 PTC or 3 PT100s.
• Communication:
- USB port: This is used to connect the AVR
to a computer and creates the link between
the EasyReg software and the D510.
- CAN port: This is used to connect the AVR
to a bus CAN interpreter in order to exchange
parameters with the D510.
The CAN link is only available in the
CAN version identied by the letter C
(eg: D510-C).
• I/O: This part is used to:
- Enter settings
- Send information from the D510
- Receive information from the alternator
• LEDs: These light-emitting diodes inform
the user whether the AVR is working
correctly or not.
