Why does the circuit breaker’s contact jitter?
Some customer once made a record of the wave that the analog circuit-breaker contact jittered for analysis. The relay tripping and reclosing exit are connected with the analog circuit-breaker tripping and reclosing circuit. The contact of analog circuit-breaker is connected with the binary input of relay which gives feedback to the relay and controls the output.
T1000 & T500 & PR500 launch
In order to cater to the domestic and overseas market, PONOVO launched a new T1000 multi-function tester and T500 tester based on the previous T serial testers and the power electricity automation equipment CT circuit special kit PR500 thermal tester.
The PM closed-loop test with IEC61850 protocol
The substation automation technology is developing quickly and the digital substation is also emerging in China. IEC61850 protocol is destined to be the main communications protocol and the measurement equipments applying IEC61850 become popular. Now PM software supports the calibration with IEC61850. For example, Nari relay RCS-9700, Beijing Sifang CSC-200 and XJ FCK-851, etc.
PCT200 training got remarkable achievements in China
In September, 2010, PONOVO launched the first one CT/PT analyzer PCT200 which applies the DC principle. The Electricity Marketing Department held a full training on PCT200 in China. PONOVO sent the engineers to the offices in every region to give training. The trainees included the regional manager, sales and technicians, etc.
As the economy develops, the solutions for UHV backbone grid and weak distribution network problems are imperative. Developing UHV distribution technology is the strong shield of the intelligent grid and important measures for ensuring grid safety. PONOVO plays actively the role of UHV distribution business, and contributes to improving grid source allocation and safe operation.
The universal smallest and lightest embedded relay testing system POM2
Earlier in 2000, PONOVO pioneered the first in-built industrial computer relay testing system-P41 in China. After that the integrated relay testing system came into market. Considering the portability and management of the integrated system, it is much more popular in the customers. But the relay testing system has its own disadvantages such as crash and high failure rate which causes high cost. How to research a high reliability and portability relay testing system becomes a question.