Testboy TV 455VDE-tester Testboy TV 455 Manuale Utente

 

Measuring range according to EN61557-5 is 2.00 

Ω ÷ 1999 Ω. 

Ω) Resolution 

Ω) 

0.00 

÷ 19.99 

0.01 

20.0 

÷ 199.9 

0.1 

200 

÷ 9999 

1 

±(5% of reading + 5 digits) 

 
Max. auxiliary earth electrode resistance R

C

... 100

×R

E

 or 50 k

Ω (whichever is lower) 

Max. probe resistance R

P

................................ 100

×R

E

 or 50 k

Ω (whichever is lower) 

 
Additional probe resistance error at R

Cmax

 or R

Pmax.

 

±(10 % of reading + 10 digits) 

 
Additional error  
at 3 V voltage noise (50 Hz) ............................

±(5 % of reading + 10 digits) 

 
Open circuit voltage ......................................... < 15 VAC 
Short circuit voltage ......................................... < 30 mA 
Test voltage frequency .................................... 125 Hz 
Test voltage shape .......................................... rectangular 
Noise voltage indication threshold ................... 1 V (< 50 

Ω, worst case) 

 
Automatic measurement of auxiliary electrode resistance and probe resistance. 
Automatic measurement of voltage noise. 
 

 
9.7.1 Phase rotation 
 
Nominal system voltage range ......... 100 V

AC

 

÷ 550 V

AC

 

Nominal frequency range.................. 14 Hz 

÷ 500 Hz 

Result displayed ............................... 1.2.3 or 3.2.1 
 
9.7.2 Voltage 
 

0 

÷ 550 

1 

±(2 % of reading + 2 digits) 

 
Result type........................................ True r.m.s. (trms) 
Nominal frequency range.................. 0 Hz, 14 Hz 

÷ 500 Hz 

 
9.7.3 Frequency 
 

0.00 

÷ 9.99 

0.01 

10.0 

÷ 499.9 

0.1 

±(0.2 % of reading + 1 digit) 

 
Nominal voltage range...................... 10 V 

÷ 550 V