Dry Type Transformer , 11KV , Standard , Epoxy , Vacuum Cast, Good Performance
1, Business Scope
Pearl Electric Co., Ltd. was established in 1958, and the main business
220kV and below‐220kV oil‐immersed power transformer
33kV and below 33‐kV oil‐immersed distribution transformer
33kV and below‐33kV dry‐type transformer
Other power transformation and transmission equipment
2, Factory Area and Equipment
Pearl Electric covers a factory area of 100,000 square meters, with more than 70,000 square meters of
up‐to‐date workshop building.
The workshops are equipped with more than 600 units of modern manufacturing equipment,
advanced in China and abroad, such as the fully‐automatic vacuum resin‐casting equipment imported from
Germany HÜBERS company, the automatic slitting lines for silicon steel sheet manufacturing, 600mm
automatic transverse shear line for transformer core manufacturing, 500t electro‐hydraulic servo and
numeric‐control bending machine, corrugated tank manufacturing line, foil‐type winding machine,
lamination and turning platform for large‐size transformer core manufacturing, large‐scale transformer
assembly platform, vapor‐phase drying plant and etc.. The complete set of transformer testing equipment
is equipped in the test center, including the shielded measurement room for local partial discharge and
noise test. Pearl Electric has the capability to carry out all the type tests and routine tests (except the
short‐circuit test) within the test center, thus greatly satisfying various test requirements for transformer
product research, design and manufacturing.
3, Quality Assurance System
Pearl Electric has established a complete quality management system, with the following certifications
obtained, ISO9001:2008 Quality Management System Certification, ISO14001: 2004 Environment
Management System and GB/T28001‐2001 Occupational Health and Safety Management System
Certification. And quality assurance system for nuclear power equipment manufacturing has been
established according to the standards issued by National Nuclear Safety Administration.
|I Detailed and standard specifications:|
1, The following are Pearl's standard design on the basis of IEC standards, for reference when no detailed specs attached during inquiry.
2, If not otherwise corrected and specified by customer, Pearl will design and quote on the basis of the following conditions.
3, Unless otherwise spcified clearly by customer, transformer accessory brand will be subject to Pearl's selection.
|01||Production Descriptions||Cast Resin/Dry type Power Transformer|
|02||Reference standards||IEC 60076|
|03||Capacity||UP TO 30MVA|
|04||Voltage (HV) (kV)||UP TO 40.5KV|
|05||Voltage (LV) (kV)||UP TO 40.5KV|
|06||No Load Loss (W)||As per CLIENT'S NEED||Tolerance as per IEC|
|07||Load Loss (W)@120℃||As per CLIENT'S NEED||Tolerance as per IEC|
|08||Impedance %||As per CLIENT'S NEED||Tolerance as per IEC|
|09||Connections (Vector Group)||Dyn11 OR As per CLIENT'S NEED|
|10||Tapping Range||±2×2.5%, on HV side, off-load tap-changing|
|11||Core materials||Silicon Steel|
|13||Winding methods||HV-vacuum/LV-impregnant, OR HV-vacuum/LV-vacuum|
|14||Lightning Impulse Withstand Voltage||As per IEC Specifications|
|15||AC withstand voltage||As per IEC Specifications|
|16||Noise Level (dBA)||As per IEC Specifications|
|19||Cooling method||AN~ ANAF|