No Load Tap Changer S11 50 Kva Transformer 3 Phase 20KV 415V

S11 series full sealed 20KV three phase distribution transformer

1. General of S11 series full sealed 20KV three phase distribution transformer

1.1 Application

10~35kV class transformers are widely used in power transmission and distribution stations, industry plants, Generation Step-up Unit (GSU). They have the characteristic of high efficiency, low loss and maintenance free.

1.2 Type and Rating

Capacity range: 50-50000KVA

Secondary voltage: 415V, 400V etc.

Frequency: 50Hz, 60Hz

Type: Single phase, three phase

No-load tap changer and on-load tap changer

ONAN and ONAF

Set-up and set-down type

1.3 Standard

IEC60076-1, IEC60076-2, IEC60076-5, IEC60317, ANSI, IEEE, AS, etc.

2. Condition of service of S11 series full sealed 20KV three phase distribution transformer

2.1.1 Altitude: Up to 1000m above sea level

2.1.2 Ambient temperature:

Max. +40℃

Average (daily, Max.) +30℃

Average (yearly, Max.) +20℃

Min. -45℃

2.1.3 Application: Outdoor

2.2 Special conditions: It may be consulted between manufacturer and customer.

3. Structure feature of S11 series full sealed 20KV three phase distribution transformer

3.1Tank of 

The tank, cover and the conservator are made by corrugated steel plate. For the small transformers, we use a deep tank and a cover, but for larger transformers, we manufacture bell type. The corrugated construction are a effective way for oil cooling.

4. Technical data of typical products