Transmission lines are the connectors running between generating stations and distribution stations. Transmission lines carry high voltages from the generating stations to primary transmission stations, secondary transmission stations, primary distribution stations, and secondary distribution stations
A transformer is an electrical device which is used to transfer power from one circuit to another through electromagnetic induction. The power transfer is accompanied without frequency change. In an electronic system, the term power transformer is used to provide a number of AC supplies of several voltages and appropriate values of current from the public electricity supply.
Tungwell oil immersed transformers are up to 750kV, 1500MVA and cast resindry type transformers are up to 110kV, 40MVA. Our design team has very strong design capabilities and uses a variety of design software including 2D and 3D electrical field FEM and Magnetic flux leakage calculators. The resulting products come with many advanced features such as low loss design, short circuit withstand assurance, reliable extra-high voltage protection with overheating controls.
The range of small power transformers can be from500-7500kVA
The range of medium power transformers can be from-100MVA
The range of large power transformers can be from100MVA & beyond
It is essential to know cable construction, characteristics, and ratings to understand problems related to cable systems. However, to correctly select a cable system and assure its satisfactory operation, additional knowledge is required. This knowledge may consist of service conditions, type of load served, mode ofoperation and maintenance, and the like.
The key to the successful operation of a cable system is to select the most suitable cable for the application, make a correct installation, and perform the required maintenance.
Tungwell cable manufacturing capacity reaches to a vast number annually: 127,000 km for lowvoltage cables; 24,000km for medium voltage cables and 3,500km for high voltage cables. All kinds of cables and wires are widely used in smart grid, green buildings, industries, new energy and smart transportations.
Tungwell supports the clients on below five key factors to select a correct cable for power distribution and utilization.
Cable installation
Cable construction
Cable operation (voltage and current)
Cable size
The towers are formulated to house a variety of accessories which include platforms, ladder ear, step bolts, safety cage and so on. Our latticed tower can be used in these fields such as electric power transmission line tower, telecommunication tower, broadcasting tower, watching tower, microwave tower, mapping tower, communication tower, crossing-river tower and other applications.
Model No: 4 Legged Angular Tower(3 Legged Angular Tower or Based on the customerí»s requirements.)
Material: All the steel are used the noted Chinese steel plant products or based on the customers specific requirements or product them according to our Chinese national standard.
Capacity: 60,000tons/year
HS Code: 73081000
Payment Term:T/T; L/C
Port of Loading:Qingdao Port
For high voltage transmission lines, conductor bundles are used for each phase to fulfil electrical requirements. Spacing devices are installed on the bundles to maintain subconductor separation. Elastic and damping elements are introduced into the spacing devices for distributing the damping effect along the spans which prevents entrapment of vibration between Spacer Dampers and avoids bending stresses at the clamps.
Tronco Electric can make the design with the conductor specifications provided by clients.
Repair Sleeves
Repair sleeves are used where the strands of the overhead line conductor are broken. The conductor repair sleeve is simply compressed over the damaged section of the overhead line conductor.
The diameter and the length of the repair kits vary in order to suit the applicable overhead line conductor.
Spacer Damper
Tronco Electric offers a full range of Spacers and Spacer Dampers for bundled lines. By combining years of expertise, long term service and relaibility, we offer a full range of spacers and spacer dampers for all types of bundle configuration and conductor applications.
Vibration Damper
Vibrations will lead to internal conductor fatigue stress at suspension and tension fittings, applying compression and bending loads at conductor support points.
The electromagnetic system of the stepless enhanced contact slow release relay is the same as that of the stepless slow release relay (JWXC-H340). The magnetic circuit system of the JWJXC-H125/80 stepless enhanced contact slow release relay adds a copper short-circuit ring to make the slow release time longer.
The contact system consists of two parts: ordinary contacts and enhanced contacts. The structure of ordinary contacts is the same as that of non-polar relays, and the reinforced contacts are specially designed high-power contacts and arc wave devices.
Product Usage
The transmission relay is one of the important equipment in the AC counting code automatic blocking equipment. The DC pulse sent by the electric code transmitter is transformed into an AC pulse by the relay, and then sent to the track circuit.
JCZC2-2000 transmission relay is used in the station.
Features
Heavy spring force relay.
It is necessary to install a shock absorber when in use.
Mechanical properties
Number of contact groups: 2QHJ; 2QH
Identification pin number: 14, 53;
Strengthen the contact gap: not less than 1.5mm;
Ordinary contact gap: not less than 0.8mm;
Strengthen the contact pressure: the front contact is not less than 450mN; the rear contact is not less than 450mN;
Ordinary contact pressure: the front contact is not less than 250mN; the rear contact is not less than 250mN;
The air gap between the iron core and the street iron when the relay is working: not more than 0.20mm.
Strengthen the contact pressure on the transmission rod: not less than 100mN.
Strengthen the joint travel: not less than 0.1mm.
Common travel of common contacts: not less than 0.25mm.
Radial travel distance of street iron: 0.3mm-0.7mm.
