Jinying Transformer / Markets / Kazakhstan
Grid in Kazakhstan: 6 / 10 kV HV, 380 V LV, 50 Hz.
380 V is available on this series' low-voltage winding.
Kazakhstan’s distribution networks work at 50 Hz with 6–10 kV medium voltage and 0.4 kV low voltage. Tenders there usually quote ГОСТ or СТ РК documents. One point to settle before you quote: the EAC mark under the EAEU low-voltage regulation, TR CU 004/2011, is written for equipment rated up to 1000 V. A 6 or 10 kV distribution transformer is outside that wording.
| Rule | What it says |
|---|---|
| Networks | The rules cover networks of 3–35 kV, operated with an isolated neutral or a neutral earthed through an arc-suppression reactor or resistor (clause 24) |
| Consumer substations | Substations of 6–10/0.4 kV share one common earthing system for the 0.4 kV neutral, the tank and the cable sheaths (clause 202) |
| Low voltage | 380/220 V supply to consumer installations (for example clause 1909) |
Source: Electrical Installation Rules of the Republic of Kazakhstan, Order No. 230 of the Minister of Energy of 20 March 2015. Which of 6 kV or 10 kV applies depends on the regional network company and the substation; ask your buyer for the connection voltage.
TR CU 004/2011 (low-voltage equipment), article 1: electrical equipment intended for a rated voltage of 50 to 1000 V AC, or 75 to 1500 V DC, inclusive. A transformer with a 6 or 10 kV winding is not equipment rated for 50–1000 V, so the EAC marking under this regulation is not the document to expect for it.
TR CU 020/2011 (electromagnetic compatibility), annex 1, item 6: high-voltage equipment whose only interference sources are localised insulation defects, for example high-voltage transformers, without active electronic parts, is passive equipment outside the regulation.
Whether your buyer asks for test protocols, a manufacturer’s declaration or a national certificate is set by its tender documents and by the technical regulation in force. Put the requirement in writing before the order.
Kazakhstan has its own national standard СТ РК IEC 60076-1-2013, Power transformers, Part 1: General, and ГОСТ 30830-2002 (IEC 60076-1-93) carries the same title. State which standard, and which loss class, your tender uses.
Send the rated capacity, voltage and quantity — we quote to the grid parameters in Kazakhstan.