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%)

Any other Capacity/Voltage range Servo stabilizers can also be manufactured as per the customer’s requirements. Due to continuous developments we reserve the right to change the product design and specifications.

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

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