摘要:
A retrofit assembly structured to allow a CM22 type circuit breaker to engage, and be enclosed by, a CMD type circuit breaker tank is provided. The retrofit assembly includes a levering mechanism, a circuit breaker bus assembly having bus support members, and a door handle system structured to allow a user to actuate the circuit breaker contacts when the tank is closed.
摘要:
A cable limiter includes a main body having a cavity. The cavity of the main body is structured to receive a replaceable fusible element. An annunciator is housed by the main body. The annunciator is structured to annunciate status of the replaceable fusible element.
摘要:
A cable limiter includes a main body having a cavity. The cavity of the main body is structured to receive a replaceable fusible element. An annunciator is housed by the main body. The annunciator is structured to annunciate status of the replaceable fusible element.
摘要:
A network protector relay for a circuit breaker includes a microcontroller routine which provides a positive sequence network voltage from polyphase network voltages on a network bus. Another microcontroller routine provides a positive sequence phasing voltage from the polyphase network voltages on the network bus and polyphase feeder voltages on a feeder bus. A recloser circuit automatically recloses the circuit breaker connected between the polyphase feeder bus and the polyphase network bus in response to a function of a plurality of setpoints and the positive sequence phasing voltage which indicates a first flow of power from the polyphase feeder bus to the polyphase network bus. A receiver receives a remote close command. Another routine temporarily changes at least one of the setpoints in response to the received close command, in order to conditionally close the circuit breaker for a second flow of power from the polyphase feeder bus to the polyphase network bus, with the second flow of power being less than the first flow of power.
摘要:
A retrofit operating handle assembly structured to allow a CM22 type circuit breaker to be operatively coupled to a MG 8 or 9 type circuit breaker tank is provided. The operating handle assembly includes a tank assembly, which is coupled to the MG 8 or 9 type circuit breaker tank, and a circuit breaker, which is coupled to the CM22 type circuit breaker.
摘要:
A retrofit operating handle assembly structured to allow a CM22 type circuit breaker to be operatively coupled to a MG 8 or 9 type circuit breaker tank is provided. The operating handle assembly includes a tank assembly, which is coupled to the MG 8 or 9 type circuit breaker tank, and a circuit breaker, which is coupled to the CM22 type circuit breaker.
摘要:
A dampening apparatus has a housing with a plurality of first guide members and a plurality of second guide members coupled together. A first biasing member is located in an area proximate to the first guide members and within the housing. A first planar member is provided having a plurality of first apertures with the first guide members or the second guide members passing through the first apertures. A plurality of second planar members is provided having a plurality of second apertures with the second guide members passing through the second apertures. A plurality of second biasing members is located in an area proximate to the second guide members. An elongated shaft is coupled to the first planar member. The dampening apparatus could be included in a circuit interrupter.
摘要:
A network protector is provided with diagnostics which alert a utility of component problems in detail. Selected measurements are used to assess the condition of various components such as for example, main contact electrical resistance, a blown fuse, the availability of sufficient voltage for charging the springs which close the main contacts and adequate voltage for tripping the contacts open. These abnormal operating conditions are transmitted to a remote station at the utility so that proper maintenance can be efficiently provided.
摘要:
A retrofit assembly structured to allow a CM22 type circuit breaker to engage, and be enclosed by, a CMD type circuit breaker tank is provided. The retrofit assembly includes a levering mechanism, a circuit breaker bus assembly having bus support members, and a door handle system structured to allow a user to actuate the circuit breaker contacts when the tank is closed.
摘要:
An ink-jet ink set comprises (a) a microemulsion-based black ink in which the colorant is a water-insoluble black pigment has been chemically modified to impart water solubility by addition of functional groups to form a macromolecular chromophore and (b) at least one non-black (cyan, yellow, or magenta) ink that is a typical aqueous dye-based ink with an agent that increases the ionic strength of the no-black ink and comprises either an inorganic salt or an organic acid; the organic acid is used to adjust the pH of the non-black ink to a value of less than 5. The non-black ink may alternatively comprise a water-insoluble non-black pigment that has also been chemically modified. The macromolecular chromophore-containing ink, or pigment-based ink, of the ink-jet ink set is a microemulsion that contains a substantially water-insoluble organic oil, an organic co-solvent, and water and, optionally, an amphiphile and a high molecular weight colloid. By employing an ink set in which some of the members of the set have a higher ionic strength than the black, microemulsion-based ink, then bleed alleviation can be achieved. When the higher ionic strength ink comes in contact with the lower ionic strength microemulsion ink, the rapid change in ionic strength of the microemulsion causes flocculation of the dissolved modified pigment. The result of the flocculation is that the colorant is precipitated on the print medium. It is no longer capable of diffusion into the other ink, thereby alleviating bleed, nor is it capable of penetration into the medium, thereby resulting in improved color density and edge acuity. The inks described herein also exhibit fast drying times, high waterfastness, and high smearfastness. They also show reduced problems with inter-color bleed and show no halo effect.