Procedure Megger Test.
Procedure Megger Test.
Procedure Megger Test.
= working voltage.
= Voltage Megger.
examples:
Measurements using a "Megger" with a DC voltage of 500 Volt to include a
safety factor (2.5), when the working voltage of 400 V, then:
( 1000 . U )
R = -------- U 2,5
Q
(1000 . 400)
R = . 400 . 2,5 = 0,80 M.
500
2. Things that need attention / requirements before executing the test is:
a. Tools that measure must be clean and dry
b. Tools that measure must be free voltage AC / DC or the induced voltage,
because the voltage will affect the measuring results
c. Make sure the cable / busbar is not connected to the component / device
other.
d. hould no one around these tools and plug the barrier and warning signs
(that was there megger tests)
3. dangers of megger
a. If the cable / busbar are still connected with the components / devices, will
result in the components / devices will be damaged
b. If the affected person will cause that person will pinsan / death
4. How correct megger test
a. Make sure that the participant no 3 above
b. Connect terminal E to the cable core (L1)
c. Connect terminal L to L2, L3, N and ground
d. After connecting all and really like the image below then we turn isulasi
test
e. We are set in accordance with the capacity of cable that we measure (eg
cables for voltages of 400 volt, then isulation test ( megger test ) we set
for 1000 volt
f. After we finished the settings, press the start button and hold it until 60
seconds
g. We just read the results
Cable test
Transformer Test