Testboy TV 455VDE-tester Testboy TV 455 User Manual

Maximum test times related to selected test current for general (non-delayed) RCD 
Standard          

½

×I

ΔN

 

I

ΔN

 

2

×I

ΔN

 

5

×I

ΔN

 

EN 61008 / EN 61009 

300 ms 

300 ms 

150 ms 

40 ms 

EN 60364-4-41 

1000 ms 

1000 ms 

150 ms 

40 ms 

BS 7671 

2000 ms 

300 ms 

150 ms 

40 ms 

AS/NZ (I, II, III) 

1000 ms 

1000 ms 

150 ms 

40 ms 

 
Maximum test times related to selected test current for selective (time-delayed) RCD 
Standard          

½

×I

ΔN

 

I

ΔN

 

2

×I

ΔN

 

5

×I

ΔN

 

EN 61008 / EN 61009 

500 ms 

500 ms 

200 ms 

150 ms 

EN 60364-4-41 

1000 ms 

1000 ms 

200 ms 

150 ms 

BS 7671 

2000 ms 

500 ms 

200 ms 

150 ms 

AS/NZ (IV) 

1000 ms 

1000 ms 

200 ms 

150 ms 

 

 
 
In this menu the Isc factor for calculation of 
short circuit current in Z-LINE and Z-LOOP 
measurements can be set. 

 

Keys: 

 

Sets Isc value. 

TEST 

Confirms Isc value. 

Function selectors 

Exits back to main function menu. 

 
Short circuit current Isc in the supply system is important for selection or verification of 
protective circuit breakers (fuses, over-current breaking devices, RCDs). 
The default value of Isc factor (ksc) is 1.00. The value should be set according to local 
regulative.  
Range for adjustment of the Isc factor is 0.20 

÷ 3.00.  

 

 
The support for remote commanders can be 
switched On/ Off in this menu.