Tansfɔoma Nkankan LSY

Asụkarị Nke Aha

Ring Main Unit C-GIS Three-Phase Na-atọ na-akọrịta ahụ ịhụnanya n'ọnụ oyi dị ka ọkachasị ndụ, onye isi bushing ma ọ bụ cable ga-enwe ike ịgụnyere site n'obere ya, ọkachasị mmalite na-ekwupụta maka ịkwalite. Ọ dị ezi na kacha, ọ dị ka ọmụmaatụ maka ịkọwa ụzọ, ịkọwa isinala na ịkọwa ọdịda n'ụzọ ịkọwa ụzọ medium voltage power system nke bushing ma ọ bụ cable.

Ụfọdụ Mmemeta

• Integrated Three-Phase & Zero-Sequence Current Measurement: Designed for three-phase bushings in ring main units and pole-mounted switches, enabling simultaneous precise measurement and reliable protection for both three-phase and zero-sequence currents. Ideal for multi-cable loop applications, providing comprehensive monitoring for power systems.

• High-Reliability Fully Sealed Structure: Core and secondary windings are vacuum-cast with premium epoxy resin into a flame-retardant plastic housing, forming a hermetic seal. Resistant to moisture ingress, ensuring stable performance and maintenance-free operation throughout the lifecycle, minimizing O&M costs and potential failures.

• Wide Range of Ratios & High-Precision Output: Covers ratios from 75/5 to 800/5, meeting diverse requirements of different power systems and equipment. Classified into multiple types based on ratio, accuracy class, and rated burden. Measurement winding achieves 0.2S accuracy with ≤0.2% ratio error and ≤10' phase displacement from 1%–120% of rated current, ensuring precise metering.

• Excellent Electrical Performance & Stability: Supports 50Hz/60Hz rated frequency for global compatibility. Secondary current options of 5A/1A for seamless integration with measuring and protection devices. Withstands short-time thermal current up to 40kA/1S and continuous thermal current of 1200% In. Load power factor COS&phi;=0.8 (lagging), instrument security factor (lateral) FS<10, and protection accuracy limit factor up to 10P10/15/20, ensuring reliable operation under complex conditions.

Data Teknịkị

• Rated secondary current: 5A,1A

• Power frequency withstand voltage:3kV

• Rated frequency:   50/60Hz

• Installation site: Indoor

• Technical standard:  IEC 60044-1

Specification