Electrical Substation Knowledge Quiz

Used to electrically connect or separate various types of station components

Are disconnects that are used for connecting or disconnecting buses

Mechanical switching device capable of carrying and interrupting electrical currents under normal system conditions and also, making, carrying for a specified time, and interrupting electrical currents under a specified abnormal circuit conditions such as that of a short-circuit

Substation is a general-purpose substation, usually utilizing manufacturers switchgear (double bus, double row), with two transformers and equipped with three breakers (two breakers to serve as transformer secondary breakers and one breaker to serve as a tie breaker) arranged and operated the same as a Class E substation. This type of substation will have provisions for the addition of line cubicles and the extension of 13.2 kV or 4.8 kV buses to establish a Class A substation

Station is designed to include the installation of one or more 120 to 40/24 kV transformers and several 40/24 kV circuits. Station is usually designed for two or more 120 kV buses, two or more 120 to 40/24 kV transformers, and two or more 40/24 kV buses. The design may also include 345 and 230 kV buses and switching and associated transformation to 120 kV

Substation is a general purpose substation, equipped with two transformers, served via individual line or bus feeds, with no transformer automatic throwover or switching, but with automatic throwover provided for each pair of distribution lines via a normally open recloser between the two distribution lines. The facility may consist of 2, 4, or 6 circuits, with the reclosers located inside the substation fence.

Substation is a general-purpose substation, with two or more transformers served via individual line or bus feeds, with transformer automatic throwover and switching on the low voltage side and with circuit breakers in the 4.8 kV, 8.3 kV, or 13.2 kV line positions. This designation will apply regardless of the type of installation (indoor or outdoor switchgear, with or without transformer enclosures, single-bus or double-bus, single-row buses or double-row buses), capacity or type of equipment

Substation is a general purpose substation with three or more radially-fed 24 to 4.8 kV transformers, a 4.8 kV transformer bus, a 4.8 kV “transfer bus” and a 4.8 kV linkage bus, operated together (utilizing reactors) to provide a parallel-operated service with a maximum degree of continuity

Substation is a general-purpose substation with two transformers served via individual line or bus feeds and equipped with individual 4.8 kV breakers, which serve as both transformer secondary breakers, and line breakers in a single-bus arrangement, and with automatic transformer throwover and switching on the low-voltage side. Substations are designed for only two 4.8 kV circuits

Substation is constructed to feed industrial load exclusively regardless of capacity, equipment or arrangement, and built primarily for a specific customer. There are two types

Substation is a general-purpose substation, equipped with one or two transformers served by individual lines or bus feeds that has no provisions for automatic throwover or switching on the low voltage side. The facility may consist of multiple circuits with reclosers located inside the fence. In most instances, a manual throwover is provided by a pole-top switch, for two-transformer installation

Substation is a general-purpose substation, usually utilizing manufacturers switchgear (double bus, double row), with two transformers and equipped with three breakers (two breakers to serve as transformer secondary breakers and one breaker to serve as a tie breaker) arranged and operated the same as a Class E substation. This type of substation will have provisions for the addition of line cubicles and the extension of 13.2 kV or 4.8 kV buses to establish a Class A substation

Substation is a station or substation which does not conform to any of the official classifications or which is built for a special purpose

Substation is a general-purpose substation which includes 40 kV or 24 kV buses and switching to reduce subtransmission line lengths and exposure. A Class _ substation has no design provisions for 120 kV or higher buses and switching, or 120 to 40/24 kV transformation. Substation transformers are bus fed

Applies to 4.8 kV buses provided in some substations to serve as a temporary feed for 4.8 kV circuits that are normally served from the main circuit bus. The operation of breakers and disconnects will permit serving the load of a 4.8 kV circuit from another 4.8 kV circuit position. This switching permits a circuit to be shut down for maintenance or emergency operating.

A 24 kV or 120 kV bus that serves as a connection between the buses of generator units in power plant switching stations. Where the Bus is sectionalized into two or more buses, each bus section will be numbered in a series beginning with 1.

4.8 kV buses which serve to connect two or more transformer buses via breakers and reactors. In some instances, the Bus also serves as a feed to the transfer Bus

4.8 kV buses which are continuous and parallel to the main 4.8-kV circuit buses. Bus is energized but generally operated without load (except for a few circuits serving objectionable or flickering loads)

Intermediate 4.8 kV buses which serve as terminations for the secondary breaker position of each 24 to 4.8 kV transformer

a device that is comprised of a disconnect switch assembly with an interrupting accessory that can be used in place of a breaker in certain switching applications. This device has the capability of interrupting magnetizing current, load current and fault currents and may be applied on the 24 kV, 40 kV, 120 kV, 230 kV and 345 kV systems

Can pick up "B" portion of circuit without limitations

This number indicates that the entire circuit may be picked up under certain loading conditions.

Can pick up entire circuit at any time indicates location for station cable failure

Can pick up entire circuit indicates locations for feeder failure

Indicates alternate locations for an entire circuit

term used to designate the combination of primary disconnects, transformer, network protector and secondary fuses which are assembled into a physical unit for mounting on a wood pole, steel column, concrete mat at grade or installed as individual parts in a vault

Designates an insulated, single phase bus installed in manholes and equipped with outlets to which the phase conductors of the secondary network system are connected. The neutral conductor is connected to a non-isulated bus, referred to as a “neutral spider”

term used to designate the 4.8 kV or 13.2kV cable supplying primary power to a group of network transformers

automatic air-break switch installed between the secondary side of the transformer and the secondary grid equipped with relay protection to protect against the reverse flow of power

term used to designate the manually-operated switch located downstream of the substation breaker in the network feeder cable

DC circuits numbered 300 to 3999 PL 1 to 999

DC and PL circuits numbered 8000 to 9999

DC and PL numbered 4000 to 4999

Buses numbered 101-199

Buses numbered 11-19

Buses numbered 1-9

Used to electrically connect or separate two end-to-end line buses of the same voltage level. Breakers are tagged in conjunction with the buses they

Breaker is used to electrically connect or separate two parallel buses (upper and lower bus arrangement or double-row, double-bus switchgear) having similar functions and the same voltage level. Breakers are tagged in conjunction with the buses they