Testboy TV 455VDE-tester Testboy TV 455 Manuale Utente
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Testboy TV 455
TESTBOY TV 450
Technical specification
65
9.4.2 RCD selected
Fault loop impedance
Measuring range according to EN61557 is 0.46
Fault loop impedance
Measuring range according to EN61557 is 0.46
Ω ÷ 9.99 kΩ.
Measuring range (
Ω) Resolution
(
Ω)
Accuracy
0.00
÷ 9.99
0.01
10.0
÷ 99.9
0.1
±(5 % of reading + 10 digits)
100
÷ 999
1
1.00k
÷ 9.99k
10
± 10 % of reading
Acccuracy may be impaired in case of heavy noise on mains voltage
Prospective fault current (calculated value)
Prospective fault current (calculated value)
Measuring range (A)
Resolution (A)
Accuracy
0.00
÷ 9.99
0.01
10.0
÷ 99.9
0.1
100
÷ 999
1
1.00k
÷ 9.99k
10
10.0k
÷ 23.0k
100
Consider accuracy of fault
loop resistance
measurement
Nominal voltage range...................... 30 V
÷ 500 V (45 Hz ÷ 65 Hz)
No trip out of RCD.
R, XL values are indicative.
R, XL values are indicative.
9.5 Line impedance and prospective short-circuit current
Line impedance
Measuring range according to EN61557 is 0.25
Ω ÷ 9.99kΩ.
Measuring range (
Ω) Resolution
(
Ω)
Accuracy
0.00
÷ 9.99
0.01
10.0
÷ 99.9
0.1
±(5 % of reading + 5 digits)
100
÷ 999
1
1.00k
÷ 9.99k
10
± 10 % of reading
Prospective short-circuit current (calculated value)
Measuring range (A)
Resolution (A)
Accuracy
0.00
÷ 0.99
0.01
1.0
÷ 99.9
0.1
100
÷ 999
1
1.00k
÷ 99.99k
10
100k
÷ 199k
1000
Consider accuracy of line
resistance measurement
Test current (at 230 V)...................... 6.5 A (10 ms)
Nominal voltage range...................... 30 V
÷ 500 V (45 Hz ÷ 65 Hz)
R, XL values are indicative.