In message 507B8A65DA954724B861AAA6F66AF052@RichardHPdv6, dated Wed,
23 May 2012, Richard Nute ri...@bendbroadband.com writes:
In safety, insulation is the principal safeguard against electric
shock. The electric strength of the insulation is the key parameter
for preserving the insulation
Dear Experts,
We have been asked by a customer if our products passes the 100 megohm
insulation resistance test. Being a laboratory equipment manufacturer, we are
not familiar with this test.
Can anyone provide me with more details regarding this test?
100 megohm between what and what?
Is
Insulation Resistance test NOT same as di-electric withstand. Classic
instrument often refered to as 'megger'. IR tests are typically done at
lower test V than D/E withstand.
Depending on rating of components, IR test voltages can be applied anywhere
the insulation quality must be quantified, and
Hello Brian,
This is usually a Portable Appliance Test (PAT) requested mostly by UK
Customers. It is simply a 500 VDC dielectric withstand test where you
measure resistance. In the old days, before cell phones, IEC 348 required
this test. In my opinion, this is a left over test that has not
In message 005301cd3910$a46c3fb0$ed44bf10$@wellman.com, dated Wed, 23
May 2012, Ron Wellman rwell...@wellman.com writes:
This is usually a Portable Appliance Test (PAT) requested mostly by UK
Customers. It is simply a 500 VDC dielectric withstand test where you
measure resistance. In the old
There are IEC standards where the TC issued interpretations where a min IR
was specified for some components that bridge mains.
Various IR test methods are common for North American standards - for
example, UL/CSA2556 says
The megohmeter or megohm bridge shall be connected to the specimen and the
Hi Brian:
Related note - have been running long-term (day 22) test, inspired by
another PSTC thread, where a unit is continually subject to
1500Vac D/E
withstand. At irregular intervals, or until the boss tells me to stop
wasting time, I remove the unit from hi-pot and perform IR
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