
Servo Stablizers
In most industries, a minor fluctuation in voltage can cause the equipment to malfunction use of a Servo Controlled Voltage Stabilizer is to control fluctuations in the input voltage and provide constant output voltage with +/- 0.5% accuracy.

TECHNICAL SPECIFICATION | |
---|---|
Technical Specifications | Three Phase Air Cooled Servo Voltage Stabilizer |
Rating | 5 kVa to 2000 kVA Three Phase |
Loading Capacity | 100% |
Over-Load Capability | up to 150 % momentarily |
Input Voltage Range | 6 standard Ranges in three Phase / custom built |
Output Voltage | Standard 400 / 415 V. or as per customer requirement |
Line & Load regulation | 0.5% or 1% |
Duty Cycle | Continuous |
Wave Form Distortion | Nil true to input |
Response Time | Less than 10ms |
Correction Speed | Up to 70V per sec. (Depend on Input Voltage range & capacity) |
Correction Method | Step-Less correction using Auto Variable Transformer |
Suitability | Suitable for all power factor loads |
Cooling | Natural Air Cooled / Forced Air Cooled |
Class of Insulation | Available in E / B /F Class |
No Load Loss | Less than 0.4 % |
Efficiency | 97 % to 99% (Depend on Input Voltage range & capacity) |
Ambient Temperature | Wide ambient temperature operation from 20° C to 50° C. |
Type & Suitability | Unbalanced Supply and Load. Suitable for 3 phase Unbalanced/ balanced Supply & Unbalanced/Balanced Load. The unit consists of 3 nos. Single phase individually AC servo motor controlled units of 1/3rd of the total capacity connected in Star configuration. |
Input / Output Termination | On Copper Bus Bar |
Installation | Indoor & Out door type |
Degree of Protection | IP - 30 to IP - 55 |
Optional Features and Protections |
Overload Cut-Off and Short Circuit Protection. Low / High Voltage (out of input range) Alarm and / or Cut-Off. Single Phase Prevention Alarm and / or Cut-Off. High Temperature Alarm and / or Cut-Off. Reverse Phase Cut-Off. Auto Phase Correction in case of Phase Reversal. Spike and surge protection Ammeter, Temperature Meter, Digital Ammeter, Digital Voltmeter. Stabilizer By Pass System Remote control of stabilizer ( with wires ) Earth fault protection Delay on Circuits |
DESCRIPTION
Vimal offer a wide range of Servo-Controlled Voltage Stabilizers to meet specific needs of customer equipment. Manufactured under strictest quality control and supervision is built to give optimum performance in all conditions-at all times. Output voltage regulation from no load to full load 0.5% to 1% (adjustable)
FEATURES
• Step less output voltage correction.
• Epoxy based plug-in-type PCB (Gold plated connector).
• Facility for manual adjustment of output voltage.
• AC Servo Motor for noiseless and long life operation.
• Reliable solid state control circuit using IC’s No relays.
• Heavy duty terminals for higher than 2.5 KVA capacities
• Available in Single, Two & Three phase systems
• Three Phase / Two Phase Servo stabilizer’s are manufactured for unbalanced line and un-balanced load.
• High efficiency (approx. 96%)
OPTIONAL ACCESSSORIES
• Miniature circuit breaker for short circuit / overload protection.
• Over / under voltage protection with alarm.
• Isolation transformer circuit.
• Ampere meter for current indication.
• RF Interference filters.
• 110 volts output option Computer’s, sophisticated medical equipments, production and process control equipments, Lifts, Electronically controlled machines, Illumination Equipments, Photostat machines and Air conditioning plants, etc. Servo stabilizers are already in use in various Laboratories, Hospitals, and Commercial Establishment etcavailable.
SPECIFICATIONS
CHARACTERISTICS | SINGLE PHASE | THREE PHASE | ||
Salient Features Normal | Extended Range | Normal Range | Extended Range | |
INPUT VOLTAGE | 160 & 260 V | 140-290 V | 300-460 V | 260-520 V |
OPERATING FREQUENCY | 45 – 55 Hz | 45- 55 Hz | 45- 55 Hz | 45- 55 Hz |
OUTPUT VOLTAGE (ADJ.) | 230 ± 1% | 230 ± 1% | 400 ± 1% | 400 ± 1% |
WAVE FORM DISTORTION | None | None | None | None |
CAPACITIES (KVA) | 0.5-50 | 5-5000 |
S.NO | NAME OF WORK | AGREEMENT NUMBER & DATE | AGREEMENT COST |
---|---|---|---|
1 | Provision of 30 Mts High Mast systems at Mangalore Mandi | 575/DDC DT 4.2.02 | 8,08,000.00 |
2 | Supply & errection of 30 Mts High Mast & cabling work at Haldwani | 469/DDC Dt: 28.7.03 | 843,755.00 |
3 | Supply & errection of 02 nos 30 Mts High Mast at Sitarganj | 2574 /DDC Dt: 15.9.03 | 13,04,820.00 |
4 | Supply & errection of 02 nos 30 Mts High Mast at Haridwar | 506/DDC Dt: 31.10.2003 | 13,03,830.00 |
5 | Supply & errection of 01 nos 30 Mts High Mast at Vikasnagar | 508/DDC Dt: 31.10.2003 | 7,25,984.00 |
6 | Supply & errection of 01 nos 30 Mts High Mast at Rishikesh | 508/DDC Dt: 31.10.2003 | 7,14,451.00 |
7 | Supply & errection of 30 Mts High Mast at various mandi’s | 2912/Dt: 19.11.03 | 84,76,000.00 |
8 | Supply & errection of 15 Mts High Mast at various mandi’s | 2911/Dt: 19.11.03 | 43,05,732.00 |
S.NO | NAME OF WORK | AGREEMENT NUMBER | VALUE | AUTHORITY |
---|---|---|---|---|
1 | Provision of 25 Mts High Mast at Haridwar Railway Station | 07/DEE/MB/97 Dt: 16.2.1998 | 15,75,000.00 | Northern Railway |
2 | Provision of High Mast 25 Mts System on NH-24 [Moradabad By Pass] | MRTCL/Toll Dt:6.6.2001 | 35,88,998.00 | National highway Authority of India |
3 | Provision of High Mast 25 Mts System on NH-24 [Moradabad By Pass | MRTCL/Toll Dt: 8.02.02 | 65,10,342.00 | National highway Authority of India |
4 | Moradabad Railway Station 25 Mts | Sid/HM/01 | 6,12,000.00 | Northern Railway |
5 | Provision of 30 Mts High Mast at Mangalore[Uttranchal] | Const/CS/2001-575 Dt: 4.2.02 | 8,75,000.00 | Uttranchal Mandi |
6 | Provision of 16 Mts high Mast Jhansi,Agra,Mathura,Faridabad Railway Stations | JHS/L/169/W/T-28/2001-02 Dt:28.2.2002 | 18,68,700.00 | Central Railway |
7 | Provision of 25 Mts & 11 Mts High Mast System at NH-24 (Gaziabad-Hapur By pass) | NHAI/13011/26/99/TP/PIU/1963 Dt:10.12.2002 | 42,29,974.00 | National highway Authority of India |
8 | Provision of 25 Mtas High Mast at National Higway No:03Gwalior By pass | NHAI/PIU/GWL/NS-20/1/8Dt: 10.3.2003 | 14,76,750.00 | National highway Authority of India |
9 | Provision of 30 Mts high Mast at Anand Vihar Bus Terminal | BUS stand/BS 30.02.03 | 5,82,000.00 | Through Contractor |
10 | Face lighting of Jageswardham (Almora) | 58/BCED/2002-Dt:15.3.03 | 4,82,121.00 | CPWD Bareilly |
11 | Provision of 30 Mts High Mast at Sitarganj Mandi/Uttranchal | Const/2003/12.6.03 | 13,16,000.00 | Uttranchal Government |
12 | Provision of 30 Mts High Mast at Partapur (Merut)Without fittings | 33/Siddharta | 4,50,000.00 | Indian Oil Corporation Ltd |
13 | Supply & errection of 02 nos 30 Mts High Mast at Sitarganj | 2574 /DDC Dt: 15.9.03 | 13,04,820.00 | Uttranchal Mandi |
14 | Supply & errection of 02 nos 30 Mts High Mast at Haridwar | 506/DDC Dt:31.10.2003 | 13,03,830.00 | Uttranchal Mandi |
15 | Supply & errection of 01 nos 30 Mts High Mast at Vikasnagar | 508/DDC Dt:31.10.2003 | 7,25,984.00 | Uttranchal Mandi |
16 | Supply & errection of 01 nos 30 Mts High Mast at Rishikesh | 508/DDC Dt:31.10.2003 | 7,14,451.00 | Uttranchal Mandi |
17 | Supply & errection of 30 Mts High Mast at various mandi’s | 2912/Dt:19.11.03 | 84,76,000.00 | Uttranchal Mandi |
18 | Supply & errection of High Mast at various mandi’s | 2911/Dt:19.11.03 | 43,05,732.00 | Uttranchal Mandi |
19 | Supply errection of 16 Mts High Mast At Gwalior | 56/Sr.DEE/JHS 10.2.224 | 3,99,898.00 | NC Railway |
20 | Supply errection of 16 Mts High Mast At Gwalior | 57/Sr.DEE/JHS 10.2.224 | 3,75,898.00 | NC Railway |
21 | Supply errection of 16 Mts High Mast At RamNagar | 3406 Dt: 26.02.04 | 5,66,250.00 | Nagar Palika RamNagar |
22 | Supply errection of 16 Mts High Mast At Ruderpur | 29.02.04 | 11,92,000.00 | Nagar Palika Ruderpur |
24 | Supply errection of 16 Mts High Mast At Pithrogarh | 28.02.2004 | 12,60,000.00 | Nagar Palika Pithroagarh |
25 | Supply errection of 16 Mts High Mast At Ruderpur | 6.07.04 | 14,90,000.00 | Nagar Palika Ruderpur |
26 | Supply errection of 16 Mts High Mast At Gadarpur | 22.07.04 | 596,000.00 | Nagar Palika Gadarpur |
27 | Supply errection of 16 Mts High Mast At Ruderpur | 15.10.04 | 894,000.00 | Nagar palika Ruderpur |
28 | Supply errection of 16 Mts High Mast At Haldwani | 15.10.04 | 11,92,000.00 | Nagar Palika Haldwani |
29 | Supply errection of 16 Mts High Mast At Haldwani | 15.10.04 | 23,84,000.00 | Nagar palika Haldwani |
30 | Supply errection of 16 Mts High Mast At Ruderpur | 30.12.04 | 11,92,000.00 | Nagar Palika Ruderpur |
31 | Supply errection of 16 Mts High Mast At Jawalpur,Haridwar,Railwala Railway Station | 31.01.2005 | 26,28,9800.00 | Northern Railway |
32 | Supply erecting of 16 Mts High Mast At Ruderpur,Pilibhit,Kasganj Railway Stations | 25.02.2008 | 32,38,000.00 | North Eastern Railway Izatnagar |