New Product AVR HVR-11
The electronic regulator HVR-11 is made with state -of-the art electronic components which permit to
obtain, with reduced dimensions, all needed functions to control any type of alternator.
Main features of this regulator are:
- Voltage static error within the limit of+1%.
- Wide stability control regulation to guarantee the most suitable dynamic response to any
situation (type of drive motor, size of alternator).
- Adjustable protection from low frequencyoperation.
- Adjustable protection from overexciting caused by anomalousloads.
- Supply voltage inlet:
a) 110Vac +15%，
b) 220Vac -25%/+15%
- Maximum field current: 10 Adc
- Permanent field current:7 Adc
- Single phase reference voltage inlet: 90Vac- 440Vac
- Outlet voltage setting of the alternator with multi-roundtrimmer
- Stability control setting with multi-round trimmer
- Intervention level setting of low frequency protection with multi-roundtrimmer
- Intervention level setting of over-exciting protection with multi-round trimmer
Remote potentiometer inlet
- Possible operation at 50Hz or 60Hz
一Possible operation of alternators in paralle
OPERATION AT 60 Hz
For operating at 60Hz, connect regulator terminals M6 and M7 with a bridge.
VOLTAGE REGULATION
Voltage regulator is set during testing in order to obtain a lineto-line voltage of 400Vac/50Hz with a reference voltage of 115Vac/50Hz between terminals M5 and M6 of the regulator.
Incaseof. anynecessaryadjustment on thevoltagevalue,act ontheVG trimmer consideringthatvoltage can be increased with a clockwise rotation.
It is also possible to set the voltage using a remote potentiometer of 220kQ connecting it between terminals M6 and M8 as indicated in the electric diagram.
STABILITY CONTROL
The stability control acts on the dynamic response of the system avoiding the creation of osillations on the outlet voltage value.
The regulatoris already setby Linz Electric in order to obtain the best performance in most applications.
In case of special application the regulator response can be set acting on ST trimmer; response timing can be increased with a clockwise rotation.
Acting on Hz trimmer with a clockwise rotation it is possible to decrease the frequency value of the operating threshold.
If the regulator is set for operation at 60Hz (terminal M6 and M7 connected through a bridge) the intervention frequency of the protection is 56Hz.
OVERLOAD PROTECTION
The overload protection is made to protect the alternator induction from overload conditions or from high inductive load.
The protection limits the voltage of the exciter stator to the set value; this value that limits the supply voltage of the exciter stator is set in Linz Electric and can be increased with a clockwise rotation of OL trimmer.
ATTENTION
To avoid any damage to persons or to the equipment it is necessary that any repair of the voltage regulator is made by qualified personnel only.
Description of Trimmers:
VG: VOLTAGE. Increases outlet voltage with a clockwise rotation.
ST: STABILITY. Increases with a clockwise rotation.
HZ: LOW FREQUENCY. Protection can be disconnected with a clockwise rotation.
OL: OVERL 0AD. Protection can be disconnected with a clockwise rotation.
Description of terminals:
M1: Negative H) Excitation winding
M2: 110V supply voltage inlet
M3: Positive (+) Excitation winding
M4: 220V supply voltage inlet
M5: Reference voltageinlet
M6: Return of reference voltage and supply
M7: Bridge inlet for operating at 60Hz
M8: Remote potentiometer inlet (+)
The main parts of an electric generator
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