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4. Testing voltage
Attention!
Hold the device below the limiting disc!
The magnet / rail foot clamp / universal clamp can be live voltage if they are not connected
to ground.
Hold the voltage tester underneath the limiting disc and hook the test electrode into the catenary.
The display should be clearly visible at about eye level.
As soon as the electrode is mounted to the overhead line, the present voltage is signalised.
Note:
Inducted voltage can also be displayed without direct contact to the overhead line.
If the message „TEST Err“ appears on the LCD, the self-test has not been successfully completed or forgotten.
The voltage test must be aborted and the self-test first performed.
No operating voltage
Operating voltage
No voltage:
Interference voltage < Limit Ut:
Voltage
≥
Limit Ut:
Attention!
With voltage of more than 1000 V AC / 1500 V DC „OL“ without numerical value appears and an acoustic signal
accurs. In this case the test must be canceled immediately!
Ut = max. interference voltage. The value of Ut is labelled on the name plate.
Note:
Also on grounded overhead lines interference voltages up to 300 V can be displayed.
The voltage-tester is equipped with an steady function monitoring. If, during voltage tests „ - U - Err“ is displa-
yed, the tester is faulty and may not be placed into operation!
Continuous monitoring
For safety, the TT 1 can be hooked up in the overhead line during the work.
Should a voltage > 200 V return, the TT 1 switches on automatically and warns through its 360 ° LED display as
well as by acoustic signal.
Frequency indication
Simultaneously to voltage indication, the upper display line indicates the mains frequency in Hz.
With direct voltage „dc“ is indicated.
AC/DC Polarity
Type of voltage is indicated by symbole „~“ for AC and no sign or „–“ for DC. „-“ appears when minus is applied
with direct voltage to the test electrode with display part. When plus is applied to the test electrode with
display part, no sign appears.
Display illumination white, off after 5 s
Display illumination red
Green LED lights up
Display illumination green or off
Display 000V
Red LED lights up
Display illumination red
Indication value for voltage level and
frequency and
symbol appears on the
illuminated display, acoustic signal appears
Display illumination green
Green LED lights up
Display illumination green
Display voltage value