Measuring kit K540 (K 540, K-540)
Measuring kit K540 portable is designed to measure current, voltage and power in single-phase and three-phase three-wire and four-wire alternating current for uniform and non-uniform load phases.
Rated current: 0.1 A, 0.25 A, 0.5 A, 1.0 A, 2.5 A, 5A, 10A, 25A, 50A, 100A, 150A, 200A, 300A, 600A
Rated voltage: 15V, 30V, 75V, 150V, 300V, 450V, 600V
Measuring kit K540 portable designed for measuring current, voltage and power in single-phase and three-phase three-wire and four-wire alternating current for uniform and non-uniform load phases.
Measuring kit K540 is designed for use in moderate climate in enclosed dry heated rooms at the ambient temperature of 10 to 35 ° C and a relative humidity of 80% at a temperature of 25 ° C.
Measuring kit K540-04.1 is designed for use in dry and humid tropical climate in closed rooms with air conditioned or partially air-conditioned at the ambient temperature from 1 to 45 ° C, relative humidity up to 90% at 25 ° C.
The final value of the measuring range, the frequency (frequency) of the built-in measuring kit K540 ammeter and voltmeter correspond to those in Table. 1. Nominal voltage measuring kit K540 built-in power meter: 15V, 30V, 75V, 150V, 300V, 450V and 600V. Rated currents and end of the measuring range power meter kit K540 correspond to the data given in Table 2., The frequency (frequency) - set out in Table 3.
Accuracy classes ammeter, voltmeter and power meter kit K540 correspond to those indicated in Table 4. Accuracy class of individual CTs UTT-5M, the supplied kit K540 - 0.2 per GOST 23624-79. Rated power factor wattmeter - 1. Active resistance and inductance of the series circuit kit K540, measured between the input and output terminals of the phase set, which includes a series circuit ammeter and watt meter shall not exceed the values shown in Table. 5.
Current looping kit K540 neutral wire between the clamp and each clamp base (provided that the phase tester is not included) is (10,5, ± 0,2) mA (current programming voltmeter and wattmeter). Output accuracy ammeter, voltmeter, power meter kit K540 for measuring ranges from 0.1 to 50 A, 75 to 600 V, from 0.0075 to 30 kW (at rated voltages from 75 to 600V and rated currents from 0.1 up to 50 A) are equal to ± 0,5% of the final value of the measuring range. Output accuracy voltmeter kit K540 for measuring ranges with the final values of 30 and 15 V are equal to ± 1,0 and ± 2,5% of full scale ranges.
Output accuracy power meter kit K540 for nominal currents from. 0.1 to 50 A and a rated voltage 30 V and 15 are, respectively, ± 1,0 and ± 2,5% of the final value of the measuring range. In the application of the current transformer UTT-5M supplied, the limit of permissible basic error Kit K540 on the bands above 50 A is equal to the sum of the maximum permissible basic error of the ammeter or power meter kit K540 at the appropriate measurement range and accuracy allowed by the current of the current transformer UTT-5M.
Normal values of influence quantities correspond to GOST 8711-78 for the ammeter and voltmeter and power meter to GOST 8476-73. Devices in the tropical enforcement can have a normal temperature different from 20 ° C if it is specified in the contract, in this case, the normal temperature indicated on the scale of the device. Limits of additional instrumentation kit K540 error caused by the frequency deviation from the upper limit of normal values to any frequency in the working frequency range are ± 0,5% of the final value of the measuring range.
The limit of additional error instrument kit K540 caused by changes in temperature, ambient temperature from normal to any temperature within the operating range of 10 to 35 ° C, equal to the limit of permissible basic error for every 10 ° C change in temperature.
The limit of additional error instrument kit K540 caused by a deviation from the provisions set K540 normal in any direction at an angle of 5 °, and is equal to the limit of permissible basic error. The limit of additional error instrument kit K540 caused by the installation of a set based on the thickness of the ferromagnetic (2 ± 0,5) mm is equal to half of the maximum permissible basic error.
Limits of additional error appliances kit K540 from the influence of external homogeneous magnetic field induction of 0.5 mg, sinusoidally varying, in time with a frequency equal to the frequency of the current flowing through the measurement, the test kit K540 circuits, in the most unfavorable direction of the magnetic field and phase 1 , 5% of the final value of the measuring range. The limit of additional error power meter kit K540 caused by the influence of power factor is equal to the limit of permissible basic error in the normal range of frequencies and twice the limit of permissible basic error in the working frequency range.
Response time instrumentation kit K540 does not exceed 4. Dimensions Kit K540 no more 505h330h190 mm. Kit K540 weight not exceeding 15 kg (with a current transformer VTT-5M).