Fuse
Safety rules
CAT III - Overvoltage of class three, secondary pollution (according to IEC61010) refers to the level of protection for
the pulse compression. Typical installation location includes: distribution of three-phase circuit (including a single
commercial lighting circuit) position-fixed equipment; interior lighting equipments in large buildings, lines; industrial
field devices.
CAT IV - Overvoltage of class four, secondary pollution (according to IEC61010) refers to the level of protection for the
pulse compression. typical installation location includes: Three-phase utility power supply equipment for any outdoor
power lines or equipment; Any outdoor transmission lines; Electricity meter front-end over-current protection device.
1.5. Input/Output terminals
1 - output point for loop circuit power
2 - current measurement input common point for DC output common point for loop circuit power Simulates the output of
a transmitter group (with external power supply connected in series.) With protection by 63mA fuse.
3 - common point for all testing Common point for simulate transmitter output.
4 - voltage output of 600V�Ω�diode and continuity test.
