Most transformer problems that appear in the first year are installation problems, not manufacturing problems. This guide covers the site requirements and the sequence that avoids them.
It applies to oil immersed and dry type units, indoors and outdoors.
Most transformer problems that appear in the first year are installation problems, not manufacturing problems. This guide covers the site requirements and the sequence that avoids them.
It applies to oil immersed and dry type units, indoors and outdoors.
Provide a level reinforced concrete plinth sized to the general arrangement drawing, with cable ducts positioned correctly and, for oil filled units, oil containment or drainage where required by local rules.
Check the route: door widths, lift capacity, corridor turns, crane or hoist access. Confirm the transformer’s weight and dimensions before delivery — this is one of the most common causes of expensive delays.
Maintain the clearances specified for cooling air and for HV terminal safety. Provide ventilation sized for the continuous heat rejection; in plant rooms this must be part of the mechanical design.
Earth the tank or frame and the neutral in accordance with the system earthing arrangement and local regulations. Bond all metallic enclosures and cable screens.
Terminate HV and LV with the correct glands, lugs and torque settings. Support cable weight so it is not carried by the bushings. Verify phase sequence and identification.
Insulation resistance, ratio and vector group check, functional testing of protection and monitoring devices, and a visual check of all connections. Record the results.
Energise from the HV side where possible, observe inrush, check secondary voltage and phase rotation, then load up progressively while monitoring temperature and noise.
Not sure which rating fits your project? Send us your load list and we will size it for you — or email info@xsdfftransformer.com, call +86 158 6789 7761 or WhatsApp +852 2416 2620.
Send us the rating, primary and secondary voltage, frequency and quantity and you get a drawing and a quotation back, usually within one working day.
