Payment & Shipping Terms:
|Core:||Core-type Transformer||Cooling:||AN Or ANAF|
|Capacity:||50~2500KVA Or Customized||Rated H. V.:||10/11Kv Or Customized|
|Rated L. V.:||0.4kv Or Customized||Impedance:||6~8% Or Customized|
Power Distribution , 10kV - Class Cast Resin Dry Type Transformer , Three Phases , Two Windings
As the professional power transformer manufacturer, Pearl Electric design and manufacture various types of dry-type power transformer. The dry-type transformer manufactured by Pearl Electric features low noise, low loss and low partial discharge. With excellent structure, superior materials, scientific design, strict production technology and advanced testing method. Product catalogues are available upon requirement.
The main purpose of this manual is to support the assembly and disassembly, transportation, storage, installation and operation of the cast resin dry-type transformers with on-load or off-load tap changer and rated capacity up to 20000kVA, and rated voltage up to 35kV.
2.2 Protection level: IP00, IP20, IP23, IP30, IP31 and etc.
2.3 Cooling method: Natural air cooling (AN) or Forced air cooling (AF).
Good air ventilation in the transformer room is necessary for transformer products. If the transformer is installed in a basement or a location with limited airflow, ventilation fans should be mounted into the transformer room. The airflow value should be 2～4m3/min. per 1kW loss (P0+Pk).
Explanation of PTC (Selection function)
PTC is an abbreviation for positive temperature coefficient thermistor, which is a semiconductor resistor having a typical temperature sensitivity. When the temperature exceeds a certain value (Fixed temperature point not be adjustable), its resistance value will increase impulsively with increasing temperature, i.e., resistance mutation.
4.4.2 Logical relation of interlock control of Pt100 and PTC
184.108.40.206 Interlock control of Pt100 and PTC on over-temp alarm
220.127.116.11.1 When the temperature measured by Pt100 exceeds over-temp alarm value, in addition, PTC reaches the point of over-temp alarm and the resistance has mutated. Over-temp alarm signal will output in 6 seconds.
Lifting of Transformer
Hoist jack, truck crane or forklift truck can be used for transformer lifting.
The lifting procedure should comply with the relevant local regulations.
At the four lower corner corners, there are marks of “HOOK HERE”. When lifting a transformer with this kind of package, please hang the wire rope through these places.
If the transformer has no package or when lifting the transformer from the package, hang the wire rope through the lifting lugs.
When lifting a transformer, please be noted that the angle between the wire ropes should be no more than 60°.
The gravity center of the transformer together with its package is marked on the package. During transformer lifting, please be noted whether the transformer center is at the center of area formed by the wire ropes. If not, please adjust the length of the hoisting lines to ensure that the hook is in line with the center of gravity. Please see Fig.1 and Fig.2.
The transformer lifting should be handled with care.