Power Transformer with OLTC
Назад

Power Transformer with OLTC

SVEL Group designs and manufactures transformers with a mounted Tap Changer (OLTC – On Load Tap Changer), upon customer’s request.

Description

Description

When there is a need to ensure in-depth tap changing and jogging, we offer the solutions that require no transformer cut off. On-load tap changing allows immediate adjustment without any need to take out the transformer, disconnect the consumer or resort to any backup.

Design Features

Design Features

Magnet Core

  • Rolled Grain Oriented Electrical Steel with low specific loss;
  • Steel stacking with tilt joint of the steel strips by Step-lap Process

Windings

  • Manufacturing process ensured making windings with the stable dimensions within the whole life cycle
  • Transposed wire allows enhancing electrodynamic properties and mechanical strength of windings under short circuit, and reduce incidental loss in windings.

Active Part

  • Active Part design ensures 1.5 times reduced incidental loss within their structure.
  • Due to fit-up system and marking of each part, the possibility of any design error is eliminated, and therefore, assembling of transformers is facilitated.

Data Sheet

Data Sheet

Please find the technical data in the Data Sheet:

Parameter name Value
Transformer type Step-down, step-up, matching
Typical power, kVA 16 - 25 000
Rated higher voltage (HV winding), kV 3,15; 6; 6,3; 10; 10,5; 13,8; 15,75; 20; 35
Rated low voltage (LV winding), kV 0,23; 0,4; 0,69; 6; 6,3; 10; 10,5
Frequency, Hz 50; 60
Heat resistance class (according to GOST R 52719-2007) F
Climatic version (according to GOST 15150-69) any
Protection degree (according to GOST 14254-96) IР00 - IР54
Seismicity of the installation area on the MSK-64 scale up to 9 points
Warranty period of operation 3 years or more
Service life 30 years or more

Service and Support

Service and Support

Service and Support Service offers:

  1. Supervised Installation (guidance and support on customer's site)
  2. Service and Support for installed transformers
  3. Installation Guides
  4. Aftersales Service, including repair
  5. Insurance on equipment delivery