Whilst in irregular circumstances, the sum of phase recent will not be zero. Then mainly because of the unbalancing of section present-day, a zero sequence present-day will move during the secondary circuit of CBCT.
In distinction to some latest transformer (CT), a CBCT’s Major winding is manufactured from a three-core cable that operates in the Heart of its iron core, and its secondary coil is wrapped on a ring-shaped iron Main that may be connected to an earth fault relay.
計測器 【道具の正しい使い方】絶縁抵抗計の使い方と絶縁抵抗測定の方法
Detection of unbalanced present-day: ZCT is built to evaluate the unbalanced latest in A 3-period electrical process, which is the sum on the a few phase currents.
Suited to energy transmission and distribution devices and intended to get the job done with measuring or monitoring devices, or with protective relays, these bushing CTs (BCTs) can even be used with GIS or at the side of electric power transformers bushings. Insulation tape or epoxy resin as insulation substance.
For this reason earth fault relay related with the secondary CBCT can get energized and it isolates the healthy method with the help of the circuit breaker.
Do not have access to the handbook now but I am relatively sure the 750 also internally calculates the residual (imbalance) in the section currents(most microprocessor relays try this). I site think the manual will contact the calculated residual 50/51N rather than fifty/51G. Or anything like that. Alan
Assuming that CBCT is running during the linear region, then the magnetic flux created inside the core of CBCT are going to be directly proportional to its corresponding line current. Therefore it could be published as:
丸窓型・トラック型・分割型など、長い歴史で培われた生産技術で、規格外品であっても様々なご提案をさせていただきます。
変流器は、高圧や特別高圧の回路で大電流が主回路に流れる時、その電流を扱いやすい大きさに変換する機械です。この変流器は多くの箇所で様々な用途で使われています。目的によって選定する機器は変わりますし、使い方によって結線が変わります。ここでは、そ...
It saied once, but I request all over again, are you Test that grounding concentrator of cable again to grounding by using ZCT?
Unlike The everyday recent transformer, the CBCT gets its Main winding with the three section wires passing through the ring at its Heart on the iron core. Its secondary winding is wound to the ring formed iron Main and linked to the earth fault relay.
문화를 만들기 위한 네이버의 노력이오니 회원님의 양해와 협조 부탁드립니다.
Contrary to on an earth leakage breaker, there isn't any interruption executed and There exists only an earth leakage detection operate.