Product Description

Three-phase oil-immersed distribution transformers (TM), three-phase oil-immersed hermetically-sealed distribution transformers (TMG), three-phase oil-immersed flanged distribution transformers (TMF) and three-phase oil-immersed hermetically-sealed flanged distribution transformers (TMGF) are intended for operation in power supply with the voltage of 6 or *0 kV in open electrical installations in conditions of temperate climate (operational temperature is from **5˚C to **0˚C according to State Standard Specification *******9). Such transformers serve to depress high voltage of supply main up to necessary level of consumption. Values of transformer rated line voltage: 6/0, 4 or *0/0, 4 kV Environment: nonexplosive without any current-conducting dust Height of installation above sea level: no more than ***0 m Mode of operation: continuous Ambient temperature: from **5˚C to **0˚C Voltage regulation within the limits: U nom ±2×2, 5%* Nominal power range for transformers TM from *5 to **0 kVA for transformers TMG from *5 to ***0 kVA for transformers TMF from **0 to **0 kVA for transformers TMGF from **0 to ***0 kVA Winding connection schemes and groups: Y/Yn*0; ∆/ Yn**1; Y/Zn**1 Frequency of operation: *0Hz Transformers are not intended for operation in the conditions of shaking, vibration and snatching and in reactive environment. *Voltage regulation within the limits ±2×2, 5% from the nominal value is performed by means of tap-change operation on high-voltage side. This operation is done with the help of five-phase rack switch the drive of which is placed on transformer cover. Switching is performed without any voltage in transformer. Our transformers meet all the requirements of Russian Federation national standards and IEC standards that are proved by certification centre of OJSC Research centre of High-Voltage Gear (Moscow). Annually our production goes through inspection checkup by certification centre.