Details We manufacture world class servo voltage stabilizers and automatic voltage stabilizers in Air/Oil Cooled from 100 KVA to 3000 KVA. These servo voltage stabilizer has been designed according to the International Standards. Our servo stabilizers are very effective for power and volatge control.
OUR QUALITY STANDARDS
A brand synonymous with reliability and continuous improvement in the field of servo stabilizers, rolling contact type servo voltage stabilizer, Electroplating and Chemicals Process Rectifiers and Special Purpose Transformers, Servo technologies systems has decades of experience to achieve best possible quality to total customer's satisfaction. All the servo stabilizers are designed and supervised by a team of qualified engineers to give the best output
Despite all efforts, no state electricity board can ensure constant voltage to the customer because of long and inadequate distribution lines and irregular load pattern on distribution transformers. Generally, voltage is low during day time and high during night hours. Moreover on holidays, peak hours, rainy days and when agricultural and Industrial load is switched off, the voltage rises sharply which is more dangerou. This higher current affects the electrical motors (Particularly smaller capacity motors up to 7.5 H.P) in three ways :
RANGE 100 KVA TO 3000 KVA:
- Higher Current produces higher losses in electrical motors which causes premature failure of winding.
- These higher losses of electric motors also increase the losses of cables, switches, transformers and other associated equipments.
- For smooth continuous operation of motors, over load relays are usually set at 20% higher setting.
with the installation of the servo voltage stabilizer and automatic stabilizers maintaining 390/400 volts, the motor will operate smoothly drawing 15 - 20% lesser current and correspondingly the relay setting can be reduced by 15- 20%. In case single phasing occurs, the relay will trip in 40-50 seconds. The Motor can withstand the high current for this period and will be safe. Also, the relays, contactors, switchgears ,etc. incorporated with the motor will be safe.
The table below Compares the behaviour of 5 H.P motor at different voltage:
|
Input Voltage
|
Current
|
KVA
|
PF
|
|
400
|
7.5A
|
5.2
|
0.8
|
|
425
|
11% More
|
18% More
|
0.7
|
|
435
|
19% More
|
28% More
|
0.61
|
|
445
|
26% More
|
38% More
|
0.57
|
The table below Compares the behaviour of 60 watt lamp at different voltage:
|
Voltage
|
Current
|
Watts
|
Luminious Intensity
|
Life in Hours
|
|
230
|
0.26
|
100W - 60W
|
710
|
1000
|
|
240
|
0.27
|
65W-8.3% More
|
820
|
575
|
|
250
|
0.28
|
70.6-17.6% More
|
943
|
338
|
|
260
|
0.29
|
75.4%-26.6% More
|
1073
|
200
|
|
270
|
0.31
|
83.4-39% More
|
1213
|
100
|
Advantages of servo voltage stabilizer:
- Better efficiency in plant
- Improvement in power factor (only in case of high voltage)
- Power Saving (reduction in power bills)
- Reduction in MDI
- Uniform quality of end products
- 100% depreciation as per income tax act
- Better efficiency in plant
Technical Specification
The standard Three Phase Models are suitable for balanced type & Unbalanced Type supply and loads. The standard models confirm to the following specification :-
| Input Voltage |
360V-450V,
340V-480V, |
350V-460V,
320V-460V, |
340V-460V
300V-460V |
|
Efficiency
|
98%
95%
|
96%
93.5% |
95%
93% |
|
Output Voltage
|
415 VOLT + 1% 50Htz in 3PHASE
|
|
Cooling
|
OIL COOL
|
|
Type
|
INDOOR/OUTDOOR
|
|
Tem. Rise
|
30Deg.C ABOVE AMBIENT TEMPERATURE
|
|
Mounting
|
VERTICALLY ON UNI DIRECTIONAL WHEEL
|
|
Correction Rate
|
08-12V/Sec.-(Upto,500,KVA)
06-8V/Sec.- (Above500KVA)
|
|
Wave form distortion
|
VERTUALY NILL
|
|
Duty Cycle
|
CONTINIOUS
|
COMPARSION BETWEEN STS AND CONVENTIONAL STABILIZER
STS roller type servo stabilizer
- Power consumption is 0.5 to 1.5% depending upon the input voltage range.
- Suitable for continues 100% duty cycle
- life at full load is 15-20 years
- Five years unconditional guarantee.
- Negligible losses in full boost & buck condition
Conventional Make with Carbon Brush Regulator
- Power consumption is 2 to 7% Under Similar condition
- Suitable for only 30% to 40% duty cycle
- Maximum life is 2-3 years at full load
- Normally guarantee for one year.
- Max. Losses in full boost and buck condition
Application
Though stabilizer are useful for any kind of application, these are most suitable for 24hour continiues process plants where breakdowns due to voltage fluctuation results in heavy financial losses. These include: |