ELECTRONICVOLTAGE REGULATOR HVR-10
The electronic regulator HVR-10 is made with state-of-the-art elec-tronic components which permit to obtain, with reduced
dimensions, all needed functions to controlany type of alternator.
Main features of this regulator are:
-Voltage static error within the limit of±1%.
-Wide stability range to guarantee the most suitable dynamic re-sponse to any situation (type of drive motor, different loads).
- Adjustable protection from over-excitation caused by anomalousloads.
-Fixed protection for low frequency operation
Technical features:
Supply voltage inlet: 200Vac ±25%
Generator output voltage setting with multi-turn trimmer (VG)Maximum field current: 8Adc
Permanent field current: 6.5Adc
Single-phase reference voltage inlet: 90Vac:440Vac
Intervention level setting of over-excitation protection withmulti-turn trimmer(OL) Fixed lever setting of low frequency
protection
VOLTAGE REGULATION
"The voltage regulator is set during testing in order to obtain a sin-gle-phase generator output voltage of 230Vac.
ln case of any necessary adjustment on the voltage value, act onthe vG trimmer, considering that voltage
can be increased in clockwise direction."
OVERLOAD PROTECTION
The over-load protection is made to protect the alternator fromover-load conditions, from high inductive
load, or from low RPM operation.
The protection limits the voltage of the rotor to the set value.Theprotection is delayed to permit the necessary transient
over-loads.
This setting value, by Linz Electric checking, may be modifiedthrough the OL trimmer as follow:
- Moving the OL trimmer in clockwise direction, the interventionrotor voltage threshold is reduced, that is means that the
generator output voltage, after a programmeddelay time, will reduce its value with less final load.
- By the other hand, moving the OL trimmer in counter-clockwisedirection, the intervention rotor voltage threshold is increased,
that is means that the generator output volt-age will reduce its value with a higherfinal loads.
