Specialized transformers for wind power, photovoltaic, flywheel, gravity, air energy storage and pumped storage at 35kV and below voltage levels.
1. Installation and use of the environment is relatively harsh, three defense requirements are high
2. Strong overload capacity, good ability to withstand thermal shock
3. Strong ability to withstand harmonics
4. Low loss and high efficiency.
5. High and low voltage inlet and outlet lines are different, compact structure.
6. Various types of capacity, voltage and impedance requirements.
Low loss
The no-load loss is 20% lower than the national standard, and the load loss is 10% lower. Meet the national energy efficiency requirements.
Low noise, low LSA
The noise level is lower than the national standard 10dB, local discharge is less than 5pC.
Strong “three-proof” capability
Moisture-proof, salt spray-proof, mold-proof. Normal operation under 98% humidity. Can be put into operation without pre-drying after shutdown, which reduces the maintenance time and cost.
Three characteristic tests
The product has passed F1, C2, E2 level combustion, environmental and thermal shock tests, flame retardant and fireproof, and can be directly installed in the load center.
High overload capacity
Adopting Class H (180℃) insulation material, designed for Class F temperature rise (100K). The insulation system has a large margin and strong overload capacity.
Sensitive and reliable protection system
Equipped with three-phase inspection temperature control protection system, remote monitoring. With forced air-cooling system, can meet the special environmental requirements.
Product capacity: 1000~7500 kVA
High voltage: 6~35 kV
Low voltage: 0.315, 0.4, 0.55, 0.63, 0.69, 0.72, 0.8, 1.14kV (variable)
Impedance voltage: 6%, 6.5%, 7%, 8%
Frequency: 50/60Hz
Linkage group: Dy11, Yd11, Dy11y11, Yd11d11
Transformer main structure: double or triple winding (split type)
GB/T 1094.1 Power Transformer Part 1 General Provisions
GB/T 1094.3 Power transformer Part 3 Insulation level, insulation test and outer insulation air gap
GB/T 1094.5 Power transformers Part 5 Short-circuit capability
GB/T 1094.11 Power transformers Part 11 Dry-type transformers
GB/T 10228 Technical parameters and requirements for dry-type power transformers
GB 20052 Power transformer energy efficiency limit value and energy efficiency class
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