Enables phase shift, neutral availability, reduces harmonics, and suits LV distribution.

Load currents increase copper (I²R) losses and stray losses. Thermal rise accelerates oil aging and insulation degradation, raising dielectric losses.

The secondary winding has more turns than the primary, boosting voltage while current decreases proportionally to conserve apparent power minus losses.

Medium power transformers (typically 5-60 MVA, MV/HV interfaces) are installed in sub-transmission and distribution substations. They reduce transmission voltages to feeder voltages for industry and cities, forming a key intermediate step between bulk transmission and final distribution.

Cost is driven by kVA/MVA rating, voltage class, insulation level, cooling system, and special features like OLTCs, online monitoring, and seismic or fire requirements. Copper and core steel market prices significantly influence base cost. Custom vector groups, multiple windings, higher efficiency (low-loss) designs, and stringent test requirements add expense. Logistics, such as transportation constraints, site access, and installation complexity, also factor into the total procurement price seen by industrial customers.

Common cooling methods include ONAN (oil natural air natural), ONAF (oil natural air forced), OFAF (oil forced air forced), and OFWF (oil forced water forced). Dry-type units use AN (air natural) or AF (air forced). Radiators, fans, oil pumps, and heat exchangers enhance heat removal and allow higher loading. Some large units use directed oil flow and internal ducts to manage winding hotspots. Cooling class is a key specification, directly influencing kVA rating and overload capacity.

Apparent power for single phase is S=VI; for three phase S=?3VI. Real power depends on power factor and losses.

The TOR-80, TOR-2, and TOR-3 analyzers are available for immediate production. Each device complies with IEC standards. We will provide detailed pricing, delivery time, product documentation, and packing information. The Reid vapor pressure unit can be offered separately upon confirmation of specification.

The TOR-3 measures the dissipation factor (tan delta) of transformer oil and dielectric fluids in accordance with IEC standards. We will assist with the purchase process and provide technical documentation and pricing.

Oil filtering removes solid particles that cause wear and clog systems. GlobeCore units provide 3-5 stage filtration down to 1 �m – ideal for extending oil and equipment life in manufacturing, power, and transport industries.