35kv Class Power Transformer

35KV types are divided into two categories: distribution type, namely voltage transformation: 33~35KV/0.38~0.43KV; heavy duty type: 33~35KV/3.3~24KV. The later one used for power transmission, has larger rated capacity

These oil immersed type transformers are the outdoor use, key equipment from HV distribution line to LV feeders transmitted the electric energy to all kinds of electric consumers.

Till now we have developed several grades of these transformer to achieve better green requirement of energy saving and environment protection: S9 series, S11 series, S13 series and etc, the main difference is that the cold rolled grain oriented steel sheet can realize smaller no load loss.

Oil conservator is an essential part in 35KV class

Generally the normal working condition required: -25ºC ~ 45ºC, altitude not more than 1000m, if some necessary parts changed, the transformer can run in more ultimate conditions: i.e. -45ºC~50ºC, or 2000m altitude and etc.

Applicable standard: IEC76

Basic Parameters

         Number of phases:                              3

Rated primary voltage:                     33, 34.5, 36KV

         Highest voltage:                                 36 ~40.5KV

Rated secondary voltage:                220V~240V, 380V~430V, or 690V, 3.0KV~24KV

         Rated capacity        - Secondary voltage 0.22KV-0.69KV:        25KVA ~ 3150KVA

                                               - Secondary voltage 3.0KV~24KV:             630KVA ~ 31500KVA

         No load loss, Load loss:                      As per user requirement or our design.

         Voltage regulation:                             +5%, or 2x2.5%, or more steps, NLTC or OLTC

         Cooling methods:                                ONAN or ONAF

         Vector group:                                        Dyn11, Yyn0, or Yzn11

Normal creepage:                               > 25mm/KV