China transformers, single phase transformer, three phase transformer

Products Information

Single Phase Auto Transformers
Single Phase Auto Transformer - a transformer which has only one winding per phase, part of which is common to both primary and secondary circuits.
Using an Auto-Transformer is an economical and compact means of connecting electrical equipment to a power supply or a different voltage. Part of the winding is common to both primary and secondary circuits so there is no isolation between the two. This may be acceptable on some power systems that do not have a grounded neutral on the secondary side of the main power transformer.
Typical applications include motor loads of industrial machinery, electric heating, air conditioners, etc.

Features
Performs the same function as an isolation transformer of same KVA and voltage rating without the isolation feature

Ventilated openings in the enclosure are coordinated with the cooling ducts in the coils to ensure proper natural circulation of air for long life and minimum losses.
General purpose indoor ventilated steel enclosure suitable for dry locations. After fabrication, the enclosure is finished in ASA61 grey powder paint suitable for most industrial and commercial installations.

Most units have lifting lugs, conduit knockouts and removable front and back covers for easy access to terminals. 
 
Basic Data
Capacity: 100VA-200KVA
Phase: Single
Input: AC Power with Voltages of Various Countries
Output: AC Current, Voltage, According to Customers Requirements
Frequency: 50-60Hz
Voltage Regulation: 12%-3%
Manufacture Standard: GB/T15290-94, GB/19212-2006, GB2828-2829-87
Insulation Class: B, 130 Celsius Degree; E, 120 Celsius Degree
Temperature-rise: ≤85 Celsius Degree

Operating environment
1)Temp.:The ambient temperature can not over +40℃。
2)Altitude: Mounting location can not exceed the altitude of 2000m
3)Relative humidity: Maximum 90%
4)The site not attack by rain and snow
5)The medium which no explosion danger, no corroding metal, no electrical breakdown
6)Environment exists with out gas,stem,chemical depostion,dust or dirt that will affact transformer   insulation seriously,also explosive or corrosive medium is not allow
7)If any special working conditions that aqre not in line with above stipulations,user shall negotiate   with us

Testing Items:
No-load Test(No-load Current, No-load Voltage, No-load Loss)
Load Test (Load Voltage, Temperature-rise)
Inductive Voltage Test
DC Resistance Test
Safety Test


 

Productivity:
Toroidal/annular/ring transformer 2 million PCS,
EI transformer 3 million PCS annually;
Three Phase Transformer 50000pcs
Others 100000 pcs

Workforce:
About 200 workers, 5 technicians, 2 senior engineers

Equipment:
Over 50 sets toroidal/annular/ ring coil winding machines, 3 EI type transformer lines, 2 sets of vacuum annealing furnaces, A set of nitrogen and hydrogen production equipment.

Warning
Under no circumstances should both ends of the fixing bolt simultaneously contact the metal chassis or framework as this would create a potentially dangerous 'shorted-turn'.

Label Info:
Certificate Logo, Basic Electronic Data, Manufacture's Information, also can be printed according to customer's Advice.
Bar Code available according to customer's advice.

Certificate
The certificate of our transformer has CE CQC RoHs UL

Note
The above-mentioned single phase auto transformer is frequently-used, we can also manufacture the products by customer design. And the specification is for reference, if has the change further, please take the material object as the standard.