전자 부품 공급업체 | 트랜스포머, 인덕터, 인버터
실제 프로젝트에서는, the problem of selecting the wrong model for 건식 변압기 is very common.
용량은 충분해요, 하지만 온도 상승은 기준을 초과합니다;
전압 매칭, but noise is not qualified;
Parameter compliance, but overseas acceptance failed.
This article will delve into the most critical but easily overlooked technical details of dry-type transformers from the perspective of engineering selection.
1.Capacity selection: You cannot just look at kVA
1.1 Continuous load and intermittent load
Dry-type transformers are highly sensitive to ambient temperature and require appropriate derating in the following scenarios:
- high altitude
- high temperature environment
- Closed computer room
1.2 Overload Capacity Assessment
The short-term overload capacity of epoxy cast 건식 변압기 is significantly weaker than that of oil immersed transformers, and the load curve needs to be evaluated in advance.
2.Voltage level and wiring group
Common combinations:
- 10kV / 0.4kV
- 20kV / 0.4kV
The wiring group should match the system protection logic, ~와 같은:
- Dyn11
- 예0
3.Insulation level and temperature rise design
| 절연 등급 | Typical Temperature Rise |
|---|---|
| F급 | 100K |
| 클래스 H | 125K |
When choosing, consider long-term operating temperature rather than short-term limits.
4.Selection of cooling method
안: 자연 냉각, 저소음
의: Forced air cooling, capacity can be increased by 30-40%
But the reliability and maintenance of the fan also need to be taken into consideration.
5.Partial discharge level
High quality dry-type transformers typically require:
- Partial discharge ≤ 10 pC
This is one of the core indicators for overseas project acceptance.
6.Noise control
Noise often becomes a veto in data center and commercial building projects.
Attention should be paid to:
- core structure
- Shock absorption design
- Installation foundation
7.Protection level and environmental adaptability
Common levels:
- IP00 (실내)
- IP23/IP31 (anti drip, anti foreign object)
8.Energy efficiency and loss indicators
Critical loss parameters:
- 무부하 손실
- 부하 손실
The EU and North American markets have particularly strict requirements for this.
9.표준, certifications, and documents
Common requirements:
- IEC / IEEE
- CE
- ISO system documents
10Hidden risks of export projects
Wooden crate packaging standard
Shipping moisture prevention
Technical document language
Dry-type transformers are not necessarily “the better the parameter table, the safer it is”, but rather highly coupled system equipment with application scenarios.
The truly professional selection is a comprehensive reflection of technical understanding, engineering experience, and standard awareness.
낙양대당에너지기술유한회사, 주식회사. R을 통합하는 하이테크 기업입니다.&디, 변압기 등 전력기기 제조 및 공급, 새로운 에너지 성분, 배전 캐비닛 및 인버터. 기술혁신을 핵심으로, 우리는 글로벌 고객에게 서비스를 제공하기 위해 높은 신뢰성과 고성능 전력 솔루션을 만드는 데 중점을 두고 있습니다.. 엄격한 품질관리 시스템과 국제표준 인증으로, 앞으로도 우수한 제품을 생산하여 고객이 안전하고 안정적인 전력시스템을 구축할 수 있도록 하겠습니다..
