|Place of Origin:||China|
|Brand Name:||Pearl Electric|
|Certification:||KEMA, CE, CCC, ISO9001|
|Model Number:||PEO-S, S9~13,SZ11-M,SZ11|
|Minimum Order Quantity:||1 unit|
|Packaging Details:||Seaworthy wooden packing|
|Delivery Time:||45-50days ex-work|
|Payment Terms:||T/T, L/C|
|Supply Ability:||2.5 Million KVA/Year|
|Capacity:||4000~31500kVA Or Customized||Rated H. V.:||33kv Or Customized|
|Rated L. V.:||11kV Or Customized||Vector Group:||Dyn11 Or Customized|
|Impedence:||8-11% Or Customized||Cooling:||ONAN / ONAF Or Customized|
three phase power transformers,
electrical power transformer
35kV - 12500kVA , 3 phases , Double-column , Power Distribution Transformer , Non-exitation regulating transformer
The core is manufactured with high quality cold rolled grain-oriented silicon steel of high magnetic conductivity, and 45° mitring and steps overlapping structure is used for core production, enable the effectiveness of reducing no-load loss and no-load current.
HV winding is manufactured with high quality copper conductor, adopting optimized structure to improve electric distribution. Lightning impulse wave process is carried out for calculation and analysis, thus to improve transformer's anti-lightning impulse capability.
LV winding is manufactured with high quality foil conductor, so the ampere-turn balance is excellent and the transverse magnetic flux leakage is low. The anti-short circuit capability is thus greatly improved. Oil conduit is rationally designed in the windings to increase winding's heat dispersion surface, effectively reduce temperature and improve transformer's overload capability.
|By winding number||
35 kV class 3-phase two-winding power transformer
35 kV class on-load tap-changing power transformer
35 kV class off-load tap-changing power transformer
Acomprehensive inspect per year:
To shut off and ground the main terminals before inspecting.
|Inspection and testing project||Possible problem or item need to be examined||Solution|
|The overall of the transformer||Leakage||Comply with article 13- repairing leakage|
|Rusty||Clean and repair corrosion point|
|Bushing||Terminal||Rusty||-Clean surface carefully
-Painted with grease on the contact surface.
|Porcelain cover||Crack, damaged||Instead the porcelain cover or bushing|
|Oil level thermometer||Oil level too high or too low||Comply with the application and installation instruction of bushing and adjust oil-level.|
|Ground terminal||Signs of a rusty||Comply with the application and installation instruction of bushing|
|Fixed connections have become loose||Re-tighten them.|
|Oil level||Conservator of body and oil level||Oil level is too high or too low||Comply with the instruction of oiling and oil-expulsion, then control oil level.|
|Conservator of on-load tap-changer and oil level||Oil level is too high or too low||Comply with the instruction of oiling and oil-expulsion, then control oil level|
|Oil state||Capability to be worse than oil instruction manual||Comply to the use of sieve equipment for the renewable oil of oil-processing.|
|On-load tap-changer||Appearance checking||leakage||Compliance with “on-load switch instruction manual” and “instruction of the electric structure”|
|Work state||Heater failure|
|Number of operations||Shows when reached or exceed the maximum number of operations||Conform to “switch instruction manual”|