# The machine tool measures the applied introduction of analyzer of try out electric power

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In 2-2000 standard, need pair of machine tool main shaft empty movement power has a test. Press a regulation: The machine tool of a kind of any model, should define the target of power of wheelhead sky movement, optional choose assembles 10 better wheelhead, measure empty movement power, take average to regard assessment as index. This to with small lot, for the machine tool industry that much breed is a characteristic, if use traditional measurement technique, namely 3 watches law or the power that 2 watch laws measure wheelhead electric machinery, the measurement of these measurement technique systematic volume is huge, wiring is complex, it is a very heavy work undoubtedly, and accept the restriction that surveys construction of system, measure precision inferior, check very hard to the empty movement power of main shaft. To satisfy JB/T3382.

In 2-2000 standard 6.

4 paragraphic requirements, pass a year of many time relieve a garrison, the decision uses analyzer of HIOKI3286 electric power, the wheelhead sky that solved a machine tool successfully holds the test job of power. Analyzer of HIOKI3286 electric power uses sheet piece microprocessor technology, power of the voltage that can finish pair of single-phase AC motor or three-phase AC motor, electric current, have rendered great service, inspect the test that waits for multinomial function in factor of power, power, phase angle. 1.

The measurement of power factor phase angle is finished through measuring voltage and electric current to cross the difference 0 o'clock. The instrument passes phase angle φ , voltage U and voltaic I will calculate three-phase has result power P in real time, inspect in power S, without result power Q, φ of reaction coefficient Sin, φ of power factor Cos. Input weaveform to transducer or the distortion that brilliant brake runs timing circuit, the distortion that perhaps suffers interference is undee, not can accurate or the test is ultimate cannot have a test. Below the mode of three-phase power factor meter, the computation of power of have rendered great service is to regard as three-phase balances laden processing. If three-phase is lopsided, test result is not accurate. Why can be the test that inputs weaveform to transducer or the distortion that brilliant brake runs timing circuit caused not accurate? Because,this is the weaveform to distortion, it is different that single-phase power measures the power factor λ that measures below means and single-phase power factor to measure the power factor λ that measures below means. Cause this kind to measure what differ as a result, the reason is single-phase power measuring way is to pass have rendered great service power and inspect will calculate in power λ , calculate namely λ =P/S. And single-phase power factor measures way weaveform of meeting general voltage and voltaic weaveform consider as sine wave, will calculate through phase angle φ λ . Phase angle is measured is foundation of calculative of power factor means, if say weaveform produces distortion, the measurement of factor of this kind of power means computation can produce very big error, it is full of prunes even. Accordingly, when producing distortion to weaveform, should use single-phase power to measure factor of means computation power. Factor of A) single-phase power measures the computational λ below means, power factor measures way weaveform of meeting general voltage and voltaic weaveform consider as sine wave, will calculate through phase angle λ . Phase angle is measured is foundation of calculative of power factor means, if say voltage weaveform and voltaic weaveform are normal, it is correct that factor of undoubted and single-phase power measures the computational λ outcome below means. If B) says the voltage weaveform of the input and voltaic weaveform produced distortion when, and single-phase power factor measures means to be met likewise consider as voltage weaveform and voltaic weaveform sine wave, will calculate through phase angle λ . Phase angle is measured also is foundation of calculative of power factor means, if say weaveform produces distortion, the measurement of factor of this kind of power means computation can produce very big error. Accordingly, when producing distortion to weaveform, should use single-phase power to measure factor of means computation power, the reason is single-phase power measuring way is to pass have rendered great service power and inspect will calculate in power λ . Factor of C) three-phase power measures the computational λ below means, power factor measures way weaveform of meeting general voltage and voltaic weaveform consider as sine wave, will calculate through phase angle λ . Phase angle is measured is foundation of calculative of power factor means, if say voltage weaveform and voltaic weaveform are normal, it is correct that factor of undoubted three-phase power measures the computational λ outcome below means. If D) says the voltage weaveform of the input and voltaic weaveform produced distortion when, and three-phase power factor measures means to be met likewise consider as voltage weaveform and voltaic weaveform sine wave, will calculate through phase angle λ . Phase angle is measured also is foundation of calculative of power factor means, if say weaveform produces distortion, the measurement of factor of this kind of power means computation will be full of prunes. Accordingly, when producing distortion to weaveform, should use three-phase power to measure factor of means computation power. The reason is measure way with single-phase power identical, three-phase power measures way also is through have rendered great service power is mixed inspect will calculate in power λ . 2.

Power measures A) to single-phase circuit character, the computational formula of electric machinery power is: P=IUcos φ , measuring circuit as a result of the power of single-phase circuit is dimension the measurement of one loop, its laden power also is dimension of one, because this can use analyzer of HIOKI3286 electric power to measure directly, can numerate from analyzer of HIOKI3286 electric power directly measure an outcome. B) to three-phase circuit character, the computational formula of power of three-phase electric machinery is: P=1.

732IUcos φ , because the power of three-phase circuit measures circuit is three-phase to measure return, whether is this balanced with respect to the laden power that involves it, if say its laden power is of the balance, can measure with analyzer of HIOKI3286 electric power directly, numerate from analyzer of HIOKI3286 electric power measure an outcome. If C) says its laden power is not of the balance, measure with analyzer of HIOKI3286 electric power directly, numerate from analyzer of HIOKI3286 electric power measure a result to be able to arise relatively the measurement that be in error. Because formula is,this is: P=1.

732IUcos φ , among them the extraction of voltaic I is worth result from the pincerlike sensor of the instrument, if say the load of that one photograph that pincerlike sensor measures is big, the reading that measures an outcome is met corresponding accretion, if say the load of that one photograph that pincerlike sensor measures is light, the reading that measures an outcome is met reduce accordingly. Accordingly, if say its laden power is not of the balance, undertake 2 times metrical to electric machinery power, measure an outcome 2 times when numerate from analyzer of HIOKI3286 electric power, undertake addition. Electric machinery power is: P=P1+P2=-O of power of have rendered great service of P=P1+P2 three-phase.

54+1.

98=1.

44kW three-phase is inspected in power S=0.

866(2.

61+2.

57)=4.

=P/S=1 of λ of factor of 49kVA power.

44/4.

49=0.

Three-phase of D) of 321 the measurement of 4 lines loop, to what if say its laden power is,balance, the power of 4 lines loop and power factor measure three-phase is with three-phase the measurement of 3 lines loop is identical, do not need to use central line, can measure with analyzer of HIOKI3286 electric power directly likewise, can numerate from analyzer of HIOKI3286 electric power directly measure an outcome. However, lopsided to three-phase load, survey means and system of single-phase second line identical, will unit setting is single-phase measure mode, but measure circuit to should undertake wiring is mixed measure, it is with central line fiducial, undertake parting metrical to three-phase load, measure an outcome 3 times when numerate from analyzer of HIOKI3286 electric power respectively, undertake these power reading cumulative, right now power should be: P=P1+P2+P3 CNC Milling CNC Machining