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Automatic Voltage Control Units Model- AX-02 GENERAL DESCRIPTION
- The Voltage Control Unit(AVR) is a solid state, encapsulated, state of the art design with latest technology.
- The AVR is supplying power to the exciter field of A.C. generator and will maintain gererator voltage within close limits from no load to full load, with a frequency change of not more than +- 4%.
- Upon application or rejection of rated load, the generator voltage recovers to nominal value within 0.5 sec. However, the transient performance is mainly dependent upon the exciter & a.c. generator design aspects.
- Under some circumstances the a.c. generator wave shape changes considerably from no-load to rated load due to the typw of load, hence the r.m.s average or the peak voltage does not stay in proportion. For more than 10% harmonic distortion, the voltage regulation may be outside the limit specified.
- Unbalanced load on 3 phase a.c. generators also produces regulation figures outside the limit.
- AVR has been tested at factory and set to standard voltage, frequency and stability prior t the despatch.
- AVR has been incorporated with special filters to perform satisfactorily or no linear loads.
| Features and Technical Specifications : |
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| Input Power |
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Voltage |
: 240V ac rms + 10% |
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Frequency |
: 50/60 HZ |
| Output Power |
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Voltage |
: 95V dc at 240V a.c. input |
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Current |
: 6 Amps dc, 8 Amps for 10 secs for motor starting. |
| Field Resistance |
: 10 ohms, minimum |
| Build up |
: Less than 5V a.c. rms at AVR power input terminals. |
| Regulation |
: +/- 1% of set voltage |
| Voltage Adjustment |
: +/- 10% over 415V |
| Stability Adjustment |
: Adjustable to get stable operation and desired response. |
| Voltage Sensing |
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415V a.c. two line sensing. AVR senses average of the generator wave form. |
| Response time |
: Less than75 milli seconds. |
| Under frequency Protection (FRO) |
: Adjustable from 40HZ to 60HZ. |
| Parallel Operation Facility (QDC |
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Adjustable droop up to 6%. 5A. CT Signal from "W" phase to be connected to terminals Q1 & Q2. |
| Circuit Protection |
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Protection against voltage transients by L-C networks and high energy suppressors. |
| RFI Suppression |
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AVR includes RFI filters to filter out the RFI generated, due to power device turn on. |
| Temperature drift |
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Typically 0.025% per degree celcius over operating temperature range. |
| Fuse |
: 4 Amps fuse provided inside the AVR box. |
| Operating temperature |
: 20 degree celcius to +60 degree celcius ambient. |
| Power dessipation |
: 10 Watts (max). |
| Size (LBH) |
: AX02 : 140x145x45 |
| Weight |
: AX02 : 700 gms |
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Phone : 91-80-23306361/23384720/23306970
Fax : 91-80-23384720/23306970/23306361
