Sell Toroidal Cored Hermetically Sealed Transformer

Model No.:S11-M.R
Product Origin:China
Brand Name:Haihong
Price Terms:FOB, CFR
Payment Terms:T/T, L/C
Certification:ISO9001, UL, CCC
Description:Features: 1) S11-M.R toroidal transformer is built around a ring-shaped core, which is made from a long strip of silicon steel wound into a coil. This construction ensures that all the grain boundaries are pointing in the optimum direction, making the transformer more efficient by reducing the core's reluctance, and eliminates the air gaps inherent in the construction of an EI core (the typical laminated core is made from E-shaped and I-shaped pieces) 2) S11-M.R toroidal transformer is more efficient than the cheaper laminated EI transformer. Other advantages, compared to EI transformer, include smaller size, lower weight, less mechanical hum (only 40 - 50 dB, making them more applicable to indoor use), lower exterior magnetic field, low no-load losses, and single-bolt mounting 3) S11-M.R toroidal transformer is energy saving and maintenance free. Compared to hermetically sealed transformer with EI core, S11-M.R is using the same gaskets and hermetically sealed oil tank, which completely isolates the oil inside the tank from the atmosphere, prevents the ingress of air and moisture, slows down the insulating oil or paper's aging, and greatly extends the reliability and service life of the transformer. 4) Compared the main performance parameters with S9-M series transformer, S11-M.R has realized four improvements: an average no-load current reduced by 60% - 80%, no-load loss reduced by 20% - 35%, full weight reduced by 8% - 10%, and noise level of only 40 - 50 dB Specifications: 1) Standard: GB1094.1-5 GB/T6451 2) Capacity range: 30 - 800kVA 3) Frequency: 50Hz 4) Phase: 3-phase 5) Tap changing method: off circuit or on load 6) Tapping range: ±5% or ±2 x 2.5% 7) Connection symbol: Yyn0 or Dyn11 8) Impedance voltage: 4% or 4.5% Normal service conditions: 1) Altitude: ≤1, 000m 2) Highest ambient temperature: 40°C 3) Highest annual average temperature: 20°C 4) Highest daily average temperature: 30°C 5) Lowest temperature: -25°C 6) Indoor and outdoor 7) We can also provide transformers operated in special conditions according to users' requirements