摘要:
A housing for a variable frequency drive and its transformer, which housing has two compartments, one each for a VFD and transformer. The housing is box shaped with enclosures attached to the rear wall of each compartment, which enclosures communicate through openings in the compartments to their interiors. The VFD compartment has an exterior side wall communicating enclosure. Cooling components are disposed in each enclosure. Each compartment has inner and outer doors. The inner door of the VFD compartment has a recessed cabinet with VFD controls therein and on its door. The inner door of the transformer compartment has a grill, while its outer door has both interior and exterior louvers. The transformer compartment also holds the main circuit breaker.
摘要:
A subsea power supply arrangement includes a closed power supply module realized to contain a pressure-compensated main fluid volume; and a number of power cell arrangements arranged in the interior of the closed power supply module. At least one power cell arrangement includes a metal capacitor housing realized to contain a capacitor bank in a fluid volume, and a barrier between an interior fluid volume of the power cell arrangement and the main fluid volume. A subsea power cell arrangement for use in such a subsea power supply arrangement is also disclosed.
摘要:
A switchgear housing includes a busbar portion having a busbar enclosure. A first circuit breaker portion is coupled to the busbar portion. The first circuit breaker portion includes a first circuit breaker enclosure. A second circuit breaker portion includes a second circuit breaker enclosure. A first pressure relief member is arranged in the busbar portion. The first pressure relief member is configured and disposed to guide gases associated with an arcing event from the busbar portion upward through the busbar portion.
摘要:
An electrical enclosure includes a first wall having an exhaust opening, a second wall, and a third wall. The electrical enclosure also includes at least one circuit breaker compartment, a line compartment arranged between the third wall and the at least one circuit breaker compartment, and an exhaust duct extending through the electrical enclosure between the first wall and the second wall. The exhaust duct is fluidically connected to the exhaust opening and each of the at least one circuit breaker compartments. At least one passage extends between the line compartment and the at least one circuit breaker compartment through the exhaust duct. The at least one passage is substantially fluidically isolated from the exhaust duct.
摘要:
An improved bus bar apparatus is usable in high temperature electrical terminations and is configured to provide sufficient heat dissipation such that when connected at one end with a 90° C. wire, the bus bar apparatus is at most only at 75° C. at another end thereof, which end can be connected with a lower temperature electrical component such as a circuit interrupter. The bus bars apparatus may include bus bars that extend directly between the high temperature wires and the low temperature electrical component, or the bus bar apparatus may additionally include wires that are electrically interposed between the low temperature region of the bus bars and the electrical component. Additional cooling could be provided by employing oversized wires. The bus bars may additionally include fins, fans, or supplementary heat sinks to enhance thermal convection of the bus bar. The bus bar apparatus additionally can be provided with its own enclosure to be usable in a retrofit situation.
摘要:
Methods and systems for controlling and limiting the damage caused by arcs in electrical distribution equipment provide a cooling assembly that uses a filter or other porous substrate to absorb the energy from the arc byproducts. The filter-based cooling assembly may be used with a passive arc management device having a chamber sized and shaped to control and/or extinguish arcs and ventilation ports for expelling the arc byproducts into the cooling filter assembly. The filter-based cooling assembly may be installed in line with, at the end of, or as a substitute for, any ventilation conduits or tubes in the arc management device, or in the backplane of the arc management device, or the like, to absorb energy from the arc byproducts, cool them to a safe temperature, and vent them inside the equipment cabinet.
摘要:
A switchgear housing includes a busbar portion having a busbar enclosure. A first circuit breaker portion is coupled to the busbar portion. The first circuit breaker portion includes a first circuit breaker enclosure. A second circuit breaker portion includes a second circuit breaker enclosure. A first pressure relief member is arranged in the busbar portion. The first pressure relief member is configured and disposed to guide gases associated with an arcing event from the busbar portion upward through the busbar portion.
摘要:
An equipment-rack power distribution system is described which includes a PDU housing, a power input penetrating the housing, a plurality of power outlets disposed on a surface of the housing, circuitry enclosed in the housing interconnecting the power input and the power outlets, one or more air inlets associated with the housing, one or more air outlets associated with the housing, and an air flow device in fluid communication with one or more of the air inlets and the air outlets. An environmental sensor may activate the air flow device upon detection of predetermined environmental conditions, such as a temperature that is above a defined limit.
摘要:
A cabinet structure for a switchgear assembly. The cabinet structure includes a cabinet having upper and lower vents and a breaker cradle for holding a circuit breaker having primary disconnects for connecting the circuit breaker to bus bars. The cabinet further includes an air passageway located between the upper and lower vents, wherein the air passageway extends vertically through the primary disconnects and the cabinet. Further, the cabinet includes a fan module having at least one fan for drawing outside air through the lower vent, the air passageway and the primary disconnects for cooling the primary disconnects.
摘要:
The invention relates to an electric cabinet (1) comprising a front part and a rear part and designed to receive electric functional units (2a), said electric cabinet (1) also comprising a separating partition (20) delineating: a first cold thermal area formed by a first space (E1) located at the front part of the cabinet, and a second hot thermal area formed by a second space (E2) located at the rear part of the cabinet. The electric cabinet (1) comprises a cooling and regulating device of the temperature of the first and second spaces E1, E2, said device comprising: a cooling source (100) positioned in contact with the first space (E1) to cool the latter; heat exchange means (40) enabling cold air to flow between the first space (E1) and the second space (E2).