MARTINDALE ET4500 - 9.4 Fault loop impedance and prospective fault current; Fault Loop Impedance Specs (No Fuse;Device); Fault Loop Impedance Specs (RCD Selected)

Martindale ET4000 / ET4500 Technical specifications
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9.4 Fault loop impedance and prospective fault current
9.4.1 No disconnecting device or FUSE selected
Fault loop 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 fault current (calculated value)
Measuring range (A) Resolution (A) Accuracy
0.00 - 9.99 0.01
Consider accuracy of fault
loop resistance
measurement
10.0 - 99.9 0.1
100 - 999 1
1.00 k - 9.99 k 10
10.0 k - 23.0 k 100
The accuracy is valid if the mains voltage is stable during the measurement.
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)
9.4.2 RCD selected
Fault loop impedance
Measuring range to BS EN 61557-3 is 0.46  - 9.99 k.
Measuring range () Resolution ()
Accuracy
0.00 - 9.99 0.01
(5 % of reading + 10 digits)
10.0 - 99.9 0.1
100 - 999 1
 10 % of reading
1.00 k - 9.99 k 10
Accuracy may be impaired in case of heavy noise on the mains voltage.
Prospective fault current (calculated value)
Measuring range (A) Resolution (A) Accuracy
0.00 - 9.99 0.01
Consider accuracy of fault
loop resistance
measurement
10.0 - 99.9 0.1
100 - 999 1
1.00 k - 9.99 k 10
10.0 k - 23.0 k 100
Nominal voltage range ...................... 93 V - 134 V (45 Hz - 65 Hz)
185 V - 266 V (45 Hz - 65 Hz)
No trip out of RCD.