Thiết bị đo công suất 3 pha DETEC K-540
Technical specification
AC current measured range(three channels)1, A, – 0.01-5.
AC voltage measured range (twin three-channel meter)2, V, – 5-400.
Range of measured active power (three channels)1,2, W, – 1-2000.
Measured frequency range, Hz, – 45-55.
Limits of current measurement , A, – 1,0; 5,0.
Limits of voltage measurement, V, – 100; 400.
Limits of resistance measurement, Ohm, – 0.001-100,0.
Basic reduced voltage measurement error at each limit, max., %, – 0.2.
Basic reduced power measurement error at cos(/_u, i) >= 0,8%, max., %, – 0,5.
Basic reduced current measurement error, max., %, – 0,2.
Absolute frequency measurement error, max., Hz, – 0,25.
Input resistance of voltage measurement channels, min., kOhm, – 600.
Load voltage drop of current strength measurement channels, max., mV, – 75.
Average service lifetime of the device, min., years, – 8.
Mean time to failure, min., h, – 10000.
The permissible auxiliary measurement error caused by the ambient air temperature change relative from normal to limiting values in the operating temperature range does not exceed the limit of permissible basic error.
Notes:1 – without using an external current measuring transformer;2 – without using an external voltage measuring transformer.