HL series of electrical measuring transducers
With development of power automatic system the requirement for the electrical measuring transducers used as data collection is increasing fast. HL series of electrical measuring transducers are designed and produced to follow up the development of power system. It not only adopts SMT thick film circuit, but also has realized full-function adjustment by means of automatic checking system. It makes sure that the products have excellent performance and reliable quality.

HL serial products have been used for so many years and inspected by Electric Equipment of Ministry of Power Industry, Apparatus Quality Inspect Center and East China Power Test Institute. And each guideline of HL series of electrical measuring transducers meets entirely design requirement and has passed through the inspection of entering Internet with 0.2 grade according to GB13850-1998III standard level. 

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HL-ZQ real reactive power electrical measuring transducers
At present most electrical measuring transducers used as reactive power measure adopt spanning phase principle and get reactive power of electric network by active power measure. This way fits the power system of three-phase symmetric circuit. Three-phase circuit cannot be symmetric absolutely. So there is technique difficulty existing in reactive power measure that it cannot show truly reactive power real value of electric system checked. Because HL-ZQ real reactive power electrical measuring transducer has implemented the phase adjustment of 90°locked and moveable phase and temperature compensating system, it has solved the technique difficulty on the aspect of reactive power measure. Whether the three-phase circuit is balanced or not, the frequency and temperature are changing, these don‘t affect the test accuracy of reactive power. And the inspection of reactive power has reached the same accuracy as active power measure.

HLDW serial program-control gearshift transducer
The enterprise accords to requirement of power department, refers to the advanced technique abroad, considering the situation of our country, and produces new products—HLDW A B C D E computer program-control gearshift transducer. In power control whether main electrical insulation voltage is lower or higher than fixed value, computer system will choose the optimizing & compensating measure according to reactive power and voltage intensity. Deliver or cut capacitance automatically, adjust the separate joint of main electric insulation, and keep voltage output in stipulated range. The equipment adopts new technique of DC benchmark with constant temperature compensating, figure enactment, gearshift count, electricity-losing protection. It has the feature of excessive function, high stability, reliability and so on, and is used widely in  measure, control, voltage regulation with load, computer patrolling, far-movement.

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