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LINZ Electric - HVR 11 Electronic Regulator
The HVR electronic regulator is made with state-of-the-art electronic components which enable the user to obtain, in reduced dimensions, all the functions required to control any type of alternator granting a voltage static error within ± 1.
Electronic Voltage Regulator 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 frequency operation.
- Adjustable protection from overexciting caused by anomalous loads
Technical Features
- Supply voltage inlet: a) 110Vac ±15%, b) 220Vac -25%/+15%
- Maximum field current: 10 Adc
- Permanent field current: 7Adc
- Single phase reference voltage inlet: 90Vac ÷ 440Vac
- Outlet voltage setting of the alternator with multi-round trimmer
- Stability control setting with multi-round trimmer
- Intervention level setting of low frequency protection with multi-round trimmer
- Intervention level setting of over-exciting protection with multi-round trimmer
- Remote potentiometer inlet - Possible operation at 50Hz or 60Hz - Possible operation of alternators in parallel
Stability Control
The stability control acts on the dynamic response of the system avoiding the creation of oscillations on the outlet voltage value. The regulator is already set by 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
Protection From Low Speed Operation
Protection from low frequency is set by Linz Electric in order to operate decreasing outlet voltage when frequency is below 47Hz. 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 operational 60Hz (terminal 6 and 7 connected through abridge)the intervention frequency of the protection is 57Hz.
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.
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: OVERLOAD. Protection can be disconnected with a clockwise rotation.
Description of terminals:
1: Negative (-) Excitation winding
2: 110V supply voltage inlet
3: Positive (+) Excitation winding
4: 220V supply voltage inlet
5: Reference voltage inlet
6: Return of reference voltage and supply
7: Bridge inlet for operating at 60Hz
8: Remote potentiometer inlet (+)
Operation Test on Disassembled regulator
To verify the correct operation of the regulator (with standard setting), proceed as follows:
a) Make the connection as indicated in the diagram of fig. 3.
b) Feed the regulator with an alternating voltage of 220V 50Hz; the light bulb should notswitch on.
c) Act on VG trimmer with a clockwise rotation; the light bulb will switch onprogressively.
d) When the maximum brilliancy is reached the light bulb will switch off and after few seconds it will switch on again.
If the above described test will succeed, the regulator works properly.
Linz Electric was established in 2002 as part of an industrial project of the Pedrollo Group, a leader in the production of electric pumps. Since its beginning, the great industrial experience and financial strength of the group have enabled the company to invest in research and automation: it is a path that continues every day, improving know-how and internationalization. The group synergies allow a high quality control of the production chain and ensure the highest quality of Made in Italy products and major flexibility in worldwide service.