Transformer Room Requirements

This requirement holds even if components are protected by safety enclosures or screens.

Transformer room requirements.

Liquid containment may include. Your transformer vault requirements. Typical transformer vault space require ments depend on the number of transformers required to supply electricity to your build ing. Containment pan curbing room containment e g door sill 2 the transformer be filled with a listed less flammable insulating liquid with a minimum of 300 c fire point.

Transformers with class b insulation 80 c temperature rise or class h insulation 150 c temperature rise need not be installed in a transformer vault provided they are separated from combustible material. 4 4 2 the minimum dimensions of the transformer plinth should be 1 8m long x 1 3m wide and level with finished floor level. A standard transformer with 220 c insulation and a 150 c temperature rise will be rated to run full load in an average 30 c ambient environment over 24 hours with a maximum 40 c ambient temperature. The following have different explanations in these standards.

Transformer room with fire resistant construction or must be installed in a transformer vault. Dry type transformers installed indoors. This step will help you to avoid unnecessary and costly design changes or delays that may result if these requirements are not incorpo rated into your final building design. For example look at the requirements for dry type transformers.

If these are not over 112 kva they need a separation at least 12 in. The nec also requires 3 to 4 1m to 1 3m of aisle space between live electrical components of 600 volts or less depending on whether live components are on one or both sides of the aisle. Conventional panelboard transformer room layout. From combustible material unless separated by a fire resistant heat insulated barrier.

Many specifications list a number of transformer standards and make a statement in the specifications that the transformers must meet these standards. Figure 1 depicts a conventional electrical room layout where spacing is consistent with basic nec clearance requirements. Some definitions and requirements of these standards such as csa c88 m90 ieee c57 12 00 and iec 60076 are different. 4 4 3 the 11kv switchgear foundation shall be capable of supporting a maximum static plus dynamic load of 17kn per panel.

Search for your solution. Components are mounted individually on the wall. Other magnetics may have lower or higher ambient ratings depending on the design and application.