Recently, the world's banner electric current and voltage measure electron of yuan of LEM of manufacturer of parts of an apparatus to announce, will roll out the sensor of DV series voltage that is used at measuring 1200-4200 VRMS isolation voltage. This product uses technology of LEM patent insulation, volume is a lot of minorrer than the other and congener product on current market, over all dimension is 134 X 54.22 X 147.25mm only.
Sensor of DV series voltage already according to standard of international orbit industry (IRIS) undertook developing and throw production. Nowadays, railroad industry (include orbit car and cent station) engineers use new-style sensor to be used at measuring network voltage and train the DC join of main inverter. This product applies to the industrial market that high pressure and middling pressure survey likewise.
Result from the low electricity that has 19-23mA is used up, the safe isolation voltage of the big frequency bandwidth of 12kHz and 18.5 KV, the DV voltage sensor of LEM accords with the demand of modern railway system to satisfy the requirement of all and new-style EMC. In addition, main characteristic still includes other have very tall partial discharge to destroy arc voltage, accord with safe level, have high quality with macrobian life, and weight is mixed gently the agile machinery that fits client requirement and electric output.
The development trend of railroad market product is economic space is mixed improve performance. On the other hand, to ensure safety and undertake with exterior electric field, magnetic field and electromagnetism field insulation realizes EMC to protect thereby better, all sorts of newest standards destroy to taller insulation and partial discharge arc grade raised taller and taller requirement.
The design of the sensor of DV series voltage of LEM satisfies the requirement of these mutual conflict.
DV has level of one class attestation, because this applies to such as energy to measure the applied situation such as the quantity, uses data is accorded with the mandatory fire prevention in railroad application and the requirement that prevent smoke. DV voltage sensor classics CE attestation, have 5 years to be protected character euqally with product of all LEM railroad.
Core keyword: LEM, sensor
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