Installation Guide

6
Electric Power Generation
2022.04 / a
Installation and maintenance
R130
Replacement of the R181 / ARCM
6050 en -
3 - PROCEDURE FOR REPLACING
THE R181 ON ARCM ALTERNATORS
1 - Disconnect the wires from the R181 from the
connection block.
2 - Remove the R181 and its wired connector.
3 - Put the R130 in position (same fastening).
4 - Connect:
- the “-” terminal of the bridge rectier
(compound) to terminal 1 of the AVR
- the “+” terminal of the bridge rectier
(compound) to terminal 2 of the AVR
- the output of the resistance R01 to terminal 3
of the AVR
- the “3Y” terminal (phase T3) to terminal of the
AVR
- the “1” terminal (phase T2) to terminal of the
AVR
Adjustment of the R130 on ARCM alternators
- Measure Ur on terminals 2/3
- Measure Uexc on terminals 1/2
The Ur/Uexc ratio (no load or on load) must be
between 0.2 and 0.5.
In case of wrong compound adjustment,
there is a risk of the AVR damage.
P1: Quadrature droop
P2: Stability
P3: Overvoltage
P4: Underspeed
P5: Voltage
L1: LED underspeed
Note: After the replacement,
if some instabilities are observed
at no load, it is recommended
to add a resistance in series with
the compound eld.
Compound
eld
or
AVR