Pole Mounted Transformer
Pole-mounted distribution transformers are mounted above ground on poles. It is the transformation system of energy, made up of the nucleus ferromagnetic, windings and Medium Voltage connections and Low Voltage.
Key Features:
- Metal enclosure, type elastic, with cooling fins Increased heat dissipation surface
- Absorption of variations in volume of the dielectric liquid caused by temperature changes in the same
- Mechanical and electrical protection
- Integral filling tank, hermetically sealed
- No degradation of the liquid dielectric as it is not in Contact with air
- Reduced maintenance
- Size reduction
- Without expansion tank or Vacuuming
- Less weight
- Shielding of electromagnetic fields
- Immersed in dielectric liquid
- Noise level reduction
- Improved behaviour against overloads and harmonics
- Surface treatment and Painting.
- Protection against corrosion, atmospheric agents, insolation and impacts
Standard Accessories:
- Oil temperature indicator
- Oil level indicator
- Tap changer
- MV Bushing porcelain/Silicon Rubber
- LV Bushing Porcelain
- Pressure Relief Valve
- Oil Drain Valve
- Earthing Terminals
- Lifting Lugs
Ground Mounted Transformer
Pad-mounted transformers are generally mounted on the ground for under-ground distribution networks. It is the transformation system of energy, made up of the nucleus ferromagnetic, windings and Medium Voltage connections and Low Voltage.
Key Features:
- Metal enclosure, type elastic, with cooling fins Increased heat dissipation surface
- Absorption of variations in volume of the dielectric liquid caused by temperature changes in the same
- Mechanical and electrical protection
- Integral filling tank, hermetically sealed
- No degradation of the liquid dielectric as it is not in Contact with air
- Reduced maintenance
- Size reduction
- Without expansion tank or desiccator
- Less weight
- Shielding of electromagnetic fields
- Immersed in dielectric liquid
- Noise level reduction
- Improved behaviour against overloads and harmonics
- Surface treatment and Painting.
- Protection against corrosion, atmospheric agents, insolation and impacts
Standard Accessories:
- Oil temperature indicator
- Oil level indicator
- Tap changer
- MV Bushing porcelain/Silicon Rubber
- LV Bushing Porcelain/ Polyamide
- Pressure Relief Valve
- Oil Drain Valve
- Earthing Terminals
- Lifting Lugs
- Wheels
(LV) Type Pad Mounted Transformers Rating IEC -60076
Standard Accessories:
- Rating Plate
- HV Bushing
- LV Bushing
- Oil Level Indicator
- Thermometer Gauge
- Drain Valve
- Pressure Valve & oil filling
- Lifting Lugs
- Ear Thing Terminal
Options:
- Temp. Gauge with contact
- Oil level indicator with contact
- Pressure Valve with Contact
- Wheels
- Tap changer up to size 150 KVA max
Dry Type Isolation Transformer Outdoor Type
Dry Type Auto Transformers Motor Starter
AUTO-TRANSFORMER FOR REDUCED VOLTAGE MOTOR STARTING:
Large squirrel cage induction and synchronous motor pose unique problems during start-up these motor types have the undesirable characteristic of drawing six to eight times normal running current from the power source. Start -up current is at its peak the moment power is applied and gradually diminishes to running load current as the motor speed reaches normal during start-up there is often a substantial voltage drop on the feeder lines this can cause lights to flicker, contactors to drop out and malfunctions of other electrical and/or electronic equipment. Full voltage starting is the least expensive way to start a motor, but utility restrictions on voltage drops may not allow it.
HEAVY-DUTY AUTO TRANSFORMER REDUCED VOLTAGE STARTERS ARE THE ANSWER:
This modified starting system reduces motor inrush current and provides reduced starting torque to cushion the application of mechanical power to the drive n load. Heavy-duty uses a three coil way connected auto-transformer design this provides superior motor operation and eliminates the problem of unbalanced voltage regulation common on each of the three phase lines of two winding open delta designs. Heavy-duty autotransformer is designed for closed-circuit transition utilizing three contactors sequenced to provide a smooth transition from start to run. Once the motor is connected in the start condition it is transitioned to run by autotransformer acting as a reactor during the switching interval.
Dry Type Cast Resin Description And Rating
Dry type - high voltage transformer (Cast Resin):
With cooperation of ZENNARO ELECTRICAL CONSTRUCTION, the high technology of ZENNARO. Cast resin plant the care taken in making the moulds combined with the high quality rawb materials enable ARABIAN TRANSFORMERS CO to used ZENNARO cast resin coils and technology to produce the highest quality cast resin transformers.
The Core:
Zennaro transformers are manufactured with cores according to the latest knowledge in design, production and materials. The magnetic circuit is the core type with its section inscribed in a circle and with inserted couplings. It is constructed with positioned crystal transformer core electrical sheets, annealed in a continuous furnace and insulated from each other with Carlit. Conventional grain oriented steel (cgo steel) is used for transformers with normal no-load losses, while transformers with reduced no-load losses are built using higher quality hib steel. These steel sheets are usually 0,27mm and 0.30 mm thick. The core sheets are cut at an angle of 45°, thus allowing maximum magnetic flux in the rolling direction. Then the sheets are stacked in layers of either single or multiple overlaps. The multiple overlap or step-lap method offers additional benefits in terms of lowering no-load losses and noise levels. Once the sheets are stacked, the core is compressed and glued to form a firmly bonded whole.
Medium Voltage Windings:
The high voltage windings are made of aluminium strips and are designed to avoid the thermal expansion causes slips between conductors and resin. They are carried out as affectively resist stresses caused by short circuit. The method of manufacture guarantee a perfect distribution of the electrical filed and the absence of partial discharges as well as an excellent resistance to impulse stress.Guarantees have also been planned to resist the external dynamic effects of short-circuiting the dielectric materials employed (resin, conductors and insulators) are class (F). 150 C.
Low Voltage Windings:
The low voltage windings are obtained from aluminium or copper strips with same height of primary limb to reduce the axial strain due to short circuit currents; a class F insulating block insulates the coils. Before mounting the LV windings are immersed in alkyd resin and then polymerized at 150C this process guarantee excellent resistance to external agents (humidity and pollution of the atmosphere). The winding is designed and made out that the maximum working temperature rise at full load is equal to class F (delta T=100C). The concentric shape of the tow windings (HV & LV) is maintained by special spacer-supports, which allow the supply flux to be uniformly distributed, and avoids the onset of abnormal vibrate.
The Casting Plant:
The high technology of our casting plant, the care taken in making the moulds, combined with the high quality raw materials used, enable Zennaro® to produce the highest quality cast resin coils. The daily tests carried out to verify the level of partial discharges in the coils and measure the glass transition TG coefficient, underline the high quality manufacture of Zennaro® cast resin transformers he epoxy resin used by Zennaro® is class F and H thermal stability and the product is manufactured in conformity with the temperature limits given by the IEC 60076-11 standards. The standard of the plant, the control system software, and particularly the epoxy resin allow Zennaro® to obtain a high level product under constant computerized monitoring. The resin used in the casting system is an epoxy resin charged with very fine quartz powder, giving the transformer the necessary characteristics to pass successfully every test. The computerized monitoring ensures the accurate control of all phases of the process, from the preparation of the resin to the temperature control in the polymerisation stages and to the corresponding TG measuring.
Special Transformers Oil & Water Submersible Pumps Rating
Standard Accessories:
- Rating Plate
- Cable box for Pri.& Sec.
- Oil level indicator
- Thermometer cage
- Drain Valve
- Pressure Valve & oil filling
- Lifting Lugs
- Tap changers
- Earthing terminal
- Cable clamp
Options:
- Temp , Cage with contact
- Cable box for Pri.& Sec.
- Oil level indicator with contact
- Pressure valve with contact
- Thermometer cage
- Wheels
Transformers for Green Energy APPLICATIONS
The cooperation between Cargill and ATC flows through FR3™,, who has unlocked new potential for technical advancement and sustainability in our transformers.
ATC R&D team has cooperating with Cargill to develop a new-generation trans- former that can make the most of the features of FR3™ whilst enhancing its performance to bring innovative, renewable solutions that enhance performance, optimize cost structures and processes and have a positive environmental impact, like the SPL series.
Envirotemp FR3 fluid is a natural ester derived from renewable vegetable oils – providing improved fire safety, transformer life/load ability, and environmental benefits that are superior to mineral oil and unsurpassed by any other dielectric coolant. Because it is derived from renewable raw materials, it has a very low carbon footprint – unequalled by any other dielectric fluid option.
FR3 fluid has the ability to extend the life of insulation paper 5-8 times that of mineral oil transformers, improving grid reliability and reducing maintenance costs.
Transformers can have the same load capability but a smaller footprint, without raising concerns about the life of the transformer.
Key Figures :
- 20% Volume
- 10% Footprint
- 15% less dielectric fluids in transformer
- +20% Load Capacity
- 99% Readily Biodegradable
- 360 C fire point
Package Substitution Transformer
Package substations are coordinated assembly consisting of three phase transformer, HV ring main unit and LV distribution panel. These are widely used in areas where underground power distribution is required, such as in residential, commercial and industrial developments.
Key Features:
- High integrity, compact design and aesthetic appearance
- Portable
- Weather and vermin proof
- High security
- Economic and efficient to reduce operation cost
- Safe, reliable and easy for operation
- Sealed construction to prevent the entry of moisture
- Low temperature rise and long service life
- Low noise
- ATF standard proven surface treatment
- Robust construction for long time transportation under various condi- tions.
- Flexibility in designing transformers to meet customer requirements (Optimum cost)
- Competitive short delivery time
Rated up to 4000KVA
- Rated operating voltage up to 33KV
- Indoor & Outdoor applications
- Common skid for all equipment
- Housing fabricated from high quality galvanized steel
- Separate doors for individual compartments for easy operation maintenance
- Powder coated paint finish RAL 7033,7035…. colors available if required
- Oil immersed Transformers
- SF6 Ring Main Units.
- LV up to 6300A.
- Transformer connection direct or through cable to RMU and LV Breakers
- Internal lighting
Unit Substation
Unit substation consist of distribution transformer and low voltage panel up to 36kva aluminum transformer /aluminum busbar lvdp with main and outgoing circuit breaker, kVA rating up to 1500, the protection degree of the lv compartment is ip54 type tested according to IEC 62271, as per Saudi electricity company specifications 56-sdms-07, 56sdms-09
Lighting Street
The LSS an Outdoor application of a Prefabricated Secondary Substation with a RMU, Distribution Transformer, and Low voltage connections and designed with control lighting system. Lighting Panel controlled through photocell, Timer, equipped with contactor refer to the project requirements.
Main Distribution Panels(MDB)
A key element to distribute the electrical power supply from power source (Transformer, Switchgear, Generator, etc...) to the sub-distribution system in the plant. Electrical switchgear refers to a centralized collection of circuit breakers, fuses and switches (circuit protection devices) that function to protect, control and isolate electrical equipment.
- Main Distribution Panels LV Switchgears
- Type tested assemblies to, IEC-61439
- Rated operating voltage up to 1000 V
- Rated current up to 6300A
- Type tested panels
- IP up to IP-66
- Segregation ,Form 1 up to Form 4B
- Galvanized Sheet steel thickness: 1.2 mm to3 mm
- Maximum safety and reliability
- Adequate spacing for incoming and outgoing cables
- Customized design as per client requirements
- Front & Rear Cable
- Top & Bottom Cable
Main Parts:
- Breaker compartment
- Bus compartment
- Cable compartment
Sub-Main Distribution Panel
The MDB then feeds SMDBs, which is installed generally at the point where a large distribution cable terminates and several smaller sub-circuits start. These are the switchboards that although similar construction, are larger than a final distribution board circuit. The boards are installed midway through the power distribution system, at the point in a large distribution cable ends, and several smaller starting sub-circuits.
- Fully type tested assemblies as per IEC 61439-1
- Rated up to 1250A
- Rated operating voltage up to 690V
- Manufactured to Form 2 & Form 4 construction
- Type tested for 50kA/1 sec
- Ample cabling space for easy connections
- Top and bottom cable entry
- Panels for front or rear access to suit application
- Index of protection : IP 31 & IP 54
- Wall mounting or free standing to suit application
Final Distribution Boards
The Sub-main distribution boards feeds the Final Distribution Board, which then feeds electrical energy to the end users.
- Compliant with IEC 61439-3
- Current rating upto 250A
- Index of protection : IP 41 & IP 55 as per IEC 60529
- Available in Row type distribution, pan assembly (single or multi split arrangement) in flush or surface versions
- Short circuit withstand : 17kA for 200ms
- Adopted range to local regulations, quality makes and easy installation
Motor Control Center Panels
Motor control centres are simply physical groupings of combination starters in one assembly. A combination starter is a single enclosure containing the motor starter, fuses or circuit breaker, and a device for disconnecting power. Other devices associated with the motor, such as pushbuttons and indicator lights may also be included. These usually comprise of incoming Air Circuit Breakers, main horizontal and vertical bus bars, outgoing starter modules with MCCB / Switch Fuse Unit, overload relays, contractors, etc. with adequate space for connection of cable and are easily extendable on either side and have excellent short circuit withstand performance of Bus Bars comprised of bolted / riveted modular construction.
Key features of Motor control centres offered by AGS
- Fully type tested assemblies as per IEC 61439-1
- Rated up to 6000A
- Rated operating voltage up to 690V
- Manufactured to Formright 2 & Form 4 construction
- Type tested for 85kA/1 sec, 50kA/3 sec
- Designed for both withdrawable & fixed versions
- Tailored control using VFD, Soft starter & DOL
- Ample cabling space for easy connections
- Top and bottom cable entry.
- Panels for front or rear access to suit application
- Index of protection : IP 31 & IP 54
- Floor mounting
- Maximum safety & reliability
- Modular system with Customized design to meet end user requirements.
Capacitor Banks
Capacitor Banks improve the power factor by adding capacitive reactance in steps as per the power factor requirement.
Power factor controller constantly monitors the load (and power factor) of the system on LV Panel and switch on/ off the capacitor steps to maintain the system power factor to the set value. It provides optimum power factor improvement to compensate for lagging Vars in the system, seen as a clean and reliable solution to providing quality power to the distribution network and to economize the electricity charge to customer/consumer.
Key features of Capacitor Banks offered by AGS
- Type tested assemblies for busbars as per IEC 61439-1
- Rated upto 700 KVAR
- Power factor correction by multi step design
- Standard & detuned capacitor banks
- Manufactured to Form 2 construction
- Capacitors are Self healing, pressure sensitive disconnector & fitted with discharge resistors
- Detuned reactor tuning order 2.7 (135 Hz), 3.8 (190 Hz) and 4.3 (215 Hz)
- Microprocessor based power factor controller with various switching sequences
- Special contactors for power factor correction capacitors; equipped with limiting resistance for the inrush current.
- Easy installation & maintenance
Automatic Transfer Switches (ATS)
A switchgear or panel board made specifically for the purpose of the transfer from the main supply to the backup supply in case of failure.
The system is totally monitored and controlled through a controller which work as follows:
The controller will monitor the voltage and frequency of the incoming ac supply from two different sources, which could be from both generator or mains (utility), or a combination of both. the module will monitor source 1 and in the event of a failure will issue a start command to source two once source two is available and producing an output within limits, the module will control the transfer device and switch the load from source one to source two once the source one supply returns to within limits, the module will command a load return to source one and shut down source two. Systems that allow to sustain power by switching automatically between electric power source and standby generators power source, without interruption and keeping the power quality and loads safe.
General Control & Synchronization Panel
Synchronizing panel will operate on an automatic mains failure system, so that when the main supply is interrupted on one or all phases (after an adjustable delay period) the generator sets will start-up together. After an initial warm-up period (adjustable) the generators will synchronize with each other by means of motorized circuit breakers or contactors onto a common busbar. Next, the motorized change-over switch will be closed and the load will be connected to the main distribution box.
The load share units continuously monitor the load and during low demand peri- ods one or two generators will be shut down to save on fuel consumption. As demand rises again the second generator and third generator will be restarted, synchronized and reconnected to the load. When the AMF control unit detects that the main supply has been restored an adjustable observation period is activated before the main supply is reconnected. A cool down period will then follow, after which the generator sets will be shut down.
Key features of General Control & Synchronization Panel:
- 3-pole or 4-pole system as required
- Various combinations of load transfer by ACBs, MCCBs or Contactors
- Protection class up to IP 54
- Load sharing/load shedding
- Automatic and manual synchronizing
- Factory built to client's specifications
- Ratings up to 6000A
- Control functions available for engine monitoring, warm-up and cool down periods, emergency shutdown, multi attempt engine start control, engine test runs
- Main Distribution Boards
Automatic Transfer Switches (ATS)
A switchgear or panel board made specifically for the purpose of the transfer from the main supply to the backup supply in case of failure.
The system is totally monitored and controlled through a controller which work as follows:
The controller will monitor the voltage and frequency of the incoming ac supply from two different sources, which could be from both generator or mains (utility), or a combination of both. the module will monitor source 1 and in the event of a failure will issue a start command to source two once source two is available and producing an output within limits, the module will control the transfer device and switch the load from source one to source two once the source one supply returns to within limits, the module will command a load return to source one and shut down source two. Systems that allow to sustain power by switching automatically between electric power source and standby generators power source, without interruption and keeping the power quality and loads safe.