Martindale ET4000 / ET4500 Technical specifications
74
9.5 Line impedance and prospective short-circuit current /
Voltage drop
Line impedance
Measuring range to BS EN 61557-3 is 0.25 - 9.99k.
Measuring range () Resolution ()
Accuracy
0.00 - 9.99 0.01
(5 % of reading + 5 digits)
10.0 - 99.9 0.1
100 - 999 1
10 % of reading
1.00 k - 9.99 k 10
Prospective short-circuit current (calculated value)
Measuring range (A) Resolution (A) Accuracy
0.00 - 0.99 0.01
Consider accuracy of line
resistance measurement
1.0 - 99.9 0.1
100 - 999 1
1.00 k - 99.99 k 10
100 k - 199 k 1000
Test current (at 230 V) ...................... 6.5 A (10 ms)
Nominal voltage range ...................... 93 V - 134 V (45 Hz - 65 Hz)
185 V - 266 V (45 Hz - 65 Hz)
321 V - 485 V (45 Hz - 65 Hz)
Voltage drop (calculated value)
Measuring range (%) Resolution (%) Accuracy
0.0 - 99.9 0.1
Consider accuracy of line
impedance
measurement(s)*
Z
REF
measuring range ............................... 0.00 Ω - 20.0 Ω
*See chapter 5.6.2 Voltage drop for more information on the calculation of the voltage
drop result.