Fluke 1672 - Spd (1674 Fc)

Multifunction Tester
Measurements
51
SPD (1674 FC)
Surge Protection Devices (SPDs) or surge arresters are used to absorb high voltage peaks that
surpass any nominal value voltages and potentially harm the installed equipment. At normal
voltage levels, the SPDs make up a high impedance, are non-conductive, but at some voltage
level (greater than nominal voltage levels) the Tester starts a current draw to make a low
impedance. Test voltages can be set at 500 V or 1000 V.
Measuring principle:
A voltage ramp rises in 1 V increments to a pre-set max value of 500 V or 1000 V.
The measurement ends when the pre-set end voltage is reached, or when the device starts to
draw a current of 1 mA.
To t e s t :
1. Select the SPD mode.
2. Set the voltage range.
3. Push
T to start the SPD measurement test.
The measurement ends when the defined end voltage is reached or if the test current
exceeds the value of 1 mA.
4. After the measurement is finished, wait until the device under test is fully discharged.
Figure 23. SPD Test Connection