Cast resin transformers

Power Electronics / Power Management

3 February 2010 Power Electronics / Power Management

Legrand has released new cast resin transformers manufactured by its subsidiary, EdM, for the distribution of electrical power, energy co-generation, rectification and traction.

EdM units meet stringent international quality and safety specifications for installation in any environment, including severe conditions. Standard distribution transformers have rated power between 100 and 3150 kVA, primary rated voltage up to 36 kV and secondary rated voltage up to 433 V. Special transformers have rated power up to 20 000 kVA and primary rated voltage up to 36 kV.

Unlike oil transformers, these cast resin units can be installed inside buildings and do not require additional building structures. Since no cooling fluids are necessary, maintenance costs are also minimised. Rubber inserts alleviate the transmission of vibrations between core and windings, also reducing operating noise levels and absorbing thermal expansion of components. Sockets on the MV side adapt the primary voltage to the mains, which can be set with the transformer switched off. Class F insulating material allows for a temperature rise of 100°C and the epoxy resin insulation means low maintenance. The carriage of these units, which allow safe movement, is pre-equipped for the mounting of IP reinforced enclosures.

Accessories include thermal sensors or thermistors, electronic units for temperature control and forced ventilation systems to increase transformer power in temporary overloads or at high environmental temperatures. Legrand can also supply MV terminations for plug-in connections, surge arrester kits and anti-vibrating supports. Protective enclosures, available with different degrees of protection – IP21, IP31 and IP23 – protect transformers from external environmental impacts and people from the risk of direct contact.

EdM transformers are enhanced by the Zucchini busbar trunking system which provides synergy for a direct connection. These busbars are available in aluminium or copper.

For more information contact Legrand, +27 (0)11 444 7971, [email protected], www.legrand.co.za

Share this article:

Solving South African power problems with locally built intelligence
Editor's Choice Power Electronics / Power Management
Smart metering infrastructure in South Africa remains patchy. The rollout has been slow, coverage is inconsistent, and for the most part, granular per-unit measurement simply does not exist.

Read more...

Wide range power module
Power Electronics / Power Management
The latest DC-DC modules from Würth Elektronik are characterised by high resilience to voltage transients on the 24 V bus and an extremely wide input-voltage range from 3,5 V to 38 V.

Read more...

Selecting primary batteries for maximum service life
Uniross Batteries Power Electronics / Power Management
Primary batteries play an important role in IoT applications. Designed for longevity, they have a high-energy capacity and are often used in standalone applications where charging is impractical or impossible.

Read more...

4 kW e-mobility DC-DC converter
Brabek Power Electronics / Power Management
The RECOM RMOD4000 series of compact, plug-and-play DC-DC converters is a cost-effective solution to provide isolated 14 V, 28 V, or 56 V DC network rails from a high input voltage between 180 and 950 V DC.

Read more...

Aluminium case upgrade boosts performance
Vepac Electronics Power Electronics / Power Management
The SQBF Quarter Brick 300 W DC to DC Converter is now available in a newly upgraded metal case designed to deliver improved durability and superior electrical performance across demanding applications.

Read more...

Categories

Power Electronics / Power Management

Cast resin transformers

Further reading:

Publications by Technews