Servel Electronics Pvt. Ltd. Daryaganj, Delhi

We deals in three phase voltage stabilizer, This regulator employs a three phase variable transformer (3 nos. of single phase variable transformers mechanically coupled) driven by a single servo motor and three-phase series transformers. The Output voltage between ‘R&Y’ phase is sensed and all the three phase output are corrected accordingly. These units are, therefore, suitable only for use with balanced 3-phase mains supply. If balanced mains supply cannot be ensured, TYPE SE – 15-3U should be used.

V/UHF Test Set Indigenous substitution M/s Collins, USA supplied V/UHF Test Set for V/UHF R/T Sets. This was imported from M/s Collins, USA for MIG air-crafts. The 1:1 indigenous unit was successfully developed by the company & supplied at less than 1/4ththe imported price.

Optional Facility   Cut off at two low/ two high of input voltage Overload Protection Single-phase Prevention By-pass Arrangement Surge Suppressor       Type SE – 15-1   Single Phase Servo-Controlled Voltage Stabilizer. Suitable for use with single phase equipment.   Type SE – 15-3U   Three-phase Servo-Controlled Voltage Stabilizer. Recommended for use with unbalanced input supply voltage and/or unbalanced loads.   It consists of three single phase units connected in star. Each unit has a motorized single phase variac and a series transformer. Voltage of each phase is independently sensed and corrected to the desired value.   These units are, therefore, suitable for use with unbalanced input supply voltages and unbalanced loads.       Type SE – 15-3B   Three-phase Servo-Controlled Voltage Stabilizer. Recommended for use where 3-phase input supply and load are balanced i.e. all line voltages and currents are same.   This regulator employs a three phase variable transformer (3 nos. of single phase variable transformers mechanically coupled) driven by a single servo motor and three-phase series transformers. The Output voltage between ‘R&Y’ phase is sensed and all the three phase output are corrected accordingly. These units are, therefore, suitable only for use with balanced 3-phase mains supply. If balanced mains supply cannot be ensured, TYPE SE – 15-3U should be used.

Cooling : Natural Air/Oil cooled

Frequency : 47-53 Hz

Servel UPS Systems Introducing top of the line UPS systems from Servel with optional RS 232 serial port from computer interfacing. It comes to you with latest technology, and design which is crafted for ruggedness, reliability and long trouble free service. Salient Features Micro processor based control PWM Based MOSFET Technology Line Interactive Built -in AVR Optional RS 232 serial port for computer interfacing Transfer time < 3 m secs Efficiency > 92% Models with internal/external Batteries Changes over to inverter mode at voltages higher than 280V & less than 140V Compact One single PCB with connectors ensures quick replacement and zero down time UPS automatically gets disabled if the load is removed or switched off to conserve battery power.

elf Propelled Aircraft Starting Trolley 200 ‘Servel’ trolleys are operating in MIG21 Squadrons throughout the country.Prior to induction of this Trolley, MIG 21 Aircraft was started with Russian made APPA vehicle. This trolley developed first time successfully by the company is totally indigenous, self-propelled, giving 10 air-craft starts, using re-chargeable Ni-Cd batteries. These are in operation at 20 AF stations. Provides DC for ground testing of electrical/instruments system & Aircraft engine start Features High capacity Ni- Cd battery used for giving 10 starts without recharging & long battery life of minimum of 3 years First time introduction of Battery power self propelled Ground Support Equipment Import substitution of Bulky and expensive “APA” AN-32 transportable & low maintenance

Self Propelled Air/ N2 trolley It is a battery-propelled and battery-operated vehicle with a crane on board for loading/un-loading of 200 Kg. gas cylinder. It houses 4 gas (Air/N2) cylinders, interconnected to Pressure Regulator System on board. The Trolley has been so designed that all the operations, viz., loading/un-loading of gas cylinders, driving the Trolley to the air-craft, charging of the air-craft cylinders anywhere from 0 to 350 Kg/cm2 pressure can easily be handled by only one man. The Trolley replaces the single cylinder hand-carts/tractor-towable 4 cylinders platforms & trollies; and in doing so makes the entire operation very easy & fast. This Trolley is cost-effective, efficient, light-weight, air-transportable, reliable, easily operable by only one man, easily maintainable & wholly indigenous. Features Houses 4 Air/N2 200 Kg gas cylinders Crane on board for loading/unloading of cylinders It is battery-propelled and battery-operated Cylinders are inter-connected to Pressure regulator System on board All the operations viz – Loading/unloading of gas cylinders – Driving the trolley to the Aircraft – Charging of the gas cylinder anywhere from 0-350 Kg/Cm2 pressure can be done by one man It replaces the single Cylinder hand0carts/tractor towable 4 cylinder platform It is cost effective, efficient, single man operable Air transportable trolley Fully meets DGQA Specn. No.DGQA/GE/237 Dec 1999

System consist od one Tx, 100 Lamp-cum-Receiver assemblies, Battery-chargers and charging racks has been developed.Light intensity is FULL, HALF & OFF controlled by a transmitter. Tx and Rx cum lamp Assembly are fitted with Ni-CD BatteryFeatures Battery Operated Carrier Cum Charging Vehicle – 2nos. One Transmitter controller (Tx), 100 – Lamp-cum-Receiver unit (LRU) Light intensity controlled by Transmitter controller Fully AN-32 transportable

Gas Storage & Distribution System – Oxygen (UGSS-O2) Developed & supplied to the Indian Air Force as per DGAQA Spec. No. GSE/299 dt. Mar 2012 Storage Capacity of 480 ltrs at 350 bar Oxygen (12 cylinders @ 40 ltrs each) Onboard Pneumatic boosted to boost commercial Oxygen for high pressure storage Downstream pressure control system:0 – 5.5 Bar, 5.5 – 120 Bar, 150 – 250 bar, Bypass line. Safety Features Safety relief valves installed in ALL output lines. Low input pressure cutoff in event of insufficient pressure to boost up the oxygen to 350 bar pressure to avoid booster damage High output pressure cutoff beyond 350 bar Oxygen Leakage – two oxygen sensors to detect high ambient oxygen levels in the cabin Impure oxygen supply cutoff If the oxygen inline is not pure for aircraft use. Fire & Smoke safety – In case of fire there is an alarm and automatic fire fighting system in the system. One CO2 cylinder for automated firefighting is installed. Short & Open circuit alarm – If there is any short/ open circuit in the system the buzzer will come on.

Accessory of test equipment for testing Collins, USA V/UHF R/T Sets

Digital Remote Controlled Desk is highly used by Air Field Lighting.Airfield lighting was earlier controlled from ATC using a 100 pairs cable for operating the entire airfield lighting. DRCD was developed first time indigenously by the company using Micro-processor based circuits and the entire operation is now controlled only by a single pair of wires. Further, the whole field lighting can be programmed on the console & locked thru’ a key. When required, just insert & turn on the key; & the whole field gets lighted as programmed.Features For control of Airfield lighting circuits remotely from ATC Microprocessor based telemetry telecontrol system Monitors and displays status of lighting circuits on mimic panel at ATC Communication between ATC & CCR in through 3 pair of cable vis-à-vis 50 pair in old system One touch “All off”/Restore control during operation

battery operated platform truck units supplied – 35 crane capacity – 500 kg load capacity- 2000 kg for transportation of bombs and missiles weighing upto 500 kg capable of 5 hrs of continuous operation cost effective, efficient, single man operable air transportable trolley .

Servel Automatic Voltage Stabilizer An advanced high-tech Automatic Voltage Stabilizer from Servel. A company which has been recognized for its high standard in qaulity by defence, top industrial houses, other institutions, MNC’s etc Salient Features Automatic switch-off at dangerously low or high voltage Automatic restart on return of safe voltage Built-in time delay to prevent overload on compressor Advanced solid-state circuitry ensuring positive switching of relay contact, making it more reliable and durable Low power loss Easy and instant serviceability because of plug-in printed circuit card.

This equipment is part of pilot’s helmet and was imported from USSR. Separated from the helmet, YK-9 was developed, type-approved successfully first time & supplied as a crash program within 11 months as 1:1 replacement. Type approval has been granted by CEMILAC.

Installed in MIG aircrafts. Indicates selected channel of Collins V/UHF R/T Sets. In early ’80s, MIG fleets were modified with Collins V/UHF communication equipment. However the pilots experienced difficulty in reading the communication channel on which they were operating. In order to remove this operational difficulty, Two Digit Channel Indicator was developed as an OHR item & type-approved at ALISDA in one go. It was manufactured & subsequently used by the Mig fleet of IAF.