Voltage Regulator - Linz electric SL-PRO 18 Instrucciones Para El Uso Y El Mantenimiento

A diode works properly when:
- the resistance measured with an ohmmeter is very low in one direction
and very high in the other.
- using the battery and the light bulb (according to the battery voltage),
you can see the light bulb turning on just with one of the two possible
wiring diagrams below.
Fig. 11
Lamp ON
Lamp OFF
Varistor
Fig. 12
Varistore
Exciter
Rotor
Rotor
Rotore
eccitatrice
Rotore

7. VOLTAGE REGULATOR

The electronic voltage regulators HRV-11 and HRV-30 are made of state-
of-the-art electronic components allowing for all necessary functions to
control any type of alternator, with reduced size and without compromise.
Their main features are the following:
- Voltage static error within ±1%.
- Wide stability adjustment to fit any type of drive engine and alterna-
tor.
- Adjustable under-frequency control.
- Adjustable over-excitation control, protecting the alternator from
dangerous load conditions.
- Incorporated EMI filter, minimizing radio-interference.
- When equipped with Parallel Device DP01, it is possible to adjust the
voltage of an alternator connected in parallel with other alternators
(as long as the others are also equipped with Parallel Device).
HVR-11 technical features
- Input Voltage:
a) 110Vac ± 15%.
b) 220Vac -25%/+15%.
- Maximum field current: 10Adc.
- Single-phase sensing voltage: 90Vac ÷ 440Vac.
- Output voltage adjustment through a multi-turn trimmer.
- Stability control through a multi-turn trimmer.
- Under-frequency control "knee point" setting through a multi-turn
trimmer.
- Over-excitation control threshold setting through a multi-turn trim-
mer.
- Remote control connector.
- 50Hz or 60Hz possible input frequency.
HVR-30 technical features
- Input Voltage:
a) 110Vac ± 15%.
b) 220Vac -25%/+15%.
- Maximum field current: 10Adc.
- Three-phase sensing voltage: 90Vac ÷ 440Vac.
- Output voltage adjustment through a multi-turn trimmer.
- Stability control through a multi-turn trimmer.
- Under-frequency control "knee point" setting through a multi-turn
trimmer with red led light.
- Over-excitation control threshold setting through a multi-turn trim-
mer with yellow led light.
- Remote control connector.
- 50Hz or 60Hz possible input frequency.
- 24 -
Only qualified personnel should carry out the repair of
the voltage regulator to avoid any damage to either
persons or equipment.
60Hz Operation
When operating at 60Hz, connect HVR-11 terminals 6 and 7 or HVR-30
terminals 2 and 3 with a jumper.
Voltage regulation
The voltage regulator is factory pre-set during testing to get 400Vac phase-
to-phase voltage with 115Vac sensing voltage between HVR-11 terminals 5
and 6 or HVR-30 terminals 8 and 9.
For SLS alternators, the voltage regulator is factory pre-set to get 230Vac out-
put voltage with a 115Vac sensing voltage between HVR-11 terminals 5 and 6.
In case a little voltage adjustment is needed, turn the VG trimmer clock-wise
to increase the output voltage.
You can also adjust the output voltage using a 220kΩ remote potentiom-
eter, connecting it between HVR-11 terminals 6 and 8 or between HVR-30
terminals 1 and 2, as shown in the wiring diagram.
Stability control
The stability control function changes the dynamic response of the system
to prevent voltage hunting. The regulator is factory pre-set to obtain the
best performance in most cases.
For certain applications, the regulator's response can be changed by turning
the ST trimmer; the regulator's response time is increased by turning the
trimmer clockwise.
Under-frequency protection
The under-frequency protection is factory pre-set to reduce the output
voltage when frequency falls below 47Hz.
By turning the Hz trimmer clockwise you decrease the frequency threshold
which the under-speed protection starts operating at.
If the regulator is pre-set to work at 60Hz (HVR-11 terminals 6 and 7 or
HVR-30 terminals 2 and 3 connected with a jumper) the pre-set frequency
threshold is 57Hz.
Overload Protection
The overload protection is aimed to protect the alternator's rotating inductor
against overload conditions or highly inductive loads.
The protection limits the excitation voltage to the pre-set value.
This value is factory pre-set and it may be increased by turning the OL
trimmer clockwise.