Home Articles Downloads Forum Products Services EBME Expo Contact
Previous Thread
Next Thread
Print Thread
Rate Thread
Page 1 of 2 1 2
Joined: Sep 2001
Posts: 499
Likes: 1
Umi Offline OP
Sage
OP Offline
Sage
Joined: Sep 2001
Posts: 499
Likes: 1
Can you use an electrical safety tester to do PAT test or should you use dedicated PAT tester?


UMi-007

"WORK SMART NOT HARD !"
Joined: Feb 2004
Posts: 14,676
Likes: 63
Super Hero
Offline
Super Hero
Joined: Feb 2004
Posts: 14,676
Likes: 63

What kind of Portable Equipment are you testing ... medical equipment? smile

Either way, you need to decide what Standard(s) you intend to follow, then use whichever test instrument allows you to carry out the tests specified in the Standard(s).

Joined: Sep 2001
Posts: 499
Likes: 1
Umi Offline OP
Sage
OP Offline
Sage
Joined: Sep 2001
Posts: 499
Likes: 1
Testing General Office equipment...


UMi-007

"WORK SMART NOT HARD !"
Joined: Feb 2007
Posts: 292
Likes: 14
Master
Offline
Master
Joined: Feb 2007
Posts: 292
Likes: 14
Indeed, you can use a medical electrical safety tester to perform portable appliance testing. Since the IET Code of Practice for In-service Inspection & Testing of Electrical Equipment (4th edition) states that the minimum requirement for suitable test equipment is to measure the earth continuity and the insulation, most medical test equipment will cover these tests.

However, you can't use standard portable appliance testers to perform tests on medical equipment! The IET CoP Scope (1.2.1) specifically excludes medical equipment.

Joined: Sep 2001
Posts: 499
Likes: 1
Umi Offline OP
Sage
OP Offline
Sage
Joined: Sep 2001
Posts: 499
Likes: 1
Hello MikeX,

I was under the impression that when you PAT test, a higher voltage is used to measure insulation resistance which the safety test does not use?


UMi-007

"WORK SMART NOT HARD !"
Joined: Feb 2007
Posts: 292
Likes: 14
Master
Offline
Master
Joined: Feb 2007
Posts: 292
Likes: 14
No, the insulation test voltage is the same 500 V d.c. for medical and domestic.
(Reduced to 250 V where transient suppression devices are in use.)

Joined: May 2014
Posts: 4
Newbie
Offline
Newbie
Joined: May 2014
Posts: 4
If electrical safety means fixed wiring testing then it is is very different to PAT testing. Fixed wiring testing comes under the 17th edition fixed wiring regulations and involves testing the fixed wiring installation using an Earth Loop Tester, an RCD Trip Tester and an Insulation Tester, none of which can be used to test portable appliances(PAT)

Joined: Feb 2004
Posts: 14,676
Likes: 63
Super Hero
Offline
Super Hero
Joined: Feb 2004
Posts: 14,676
Likes: 63

Originally Posted By: umish

Testing General Office equipment...


Joined: Feb 2007
Posts: 292
Likes: 14
Master
Offline
Master
Joined: Feb 2007
Posts: 292
Likes: 14
Originally Posted By: John Louis
... testing the fixed wiring installation using an Earth Loop Tester, an RCD Trip Tester and an Insulation Tester, none of which can be used to test portable appliances(PAT)
You also missed testing the CPC (circuit protective conductor) by measuring the resistance.

As electricians tend to use a combined "all in one meter" that always include resistance and insulation why can't these be used to test domestic appliances?

You don't need a dedicated meter with these functions when you already have the measurement capability within you're existing test equipment. Clearly you don't have a nice mains socket on the tester to plug into but this is easily overcome (even ready made adapters are available for this function).

Permanently installed domestic equipment can also be tested using "standard" electricians test equipment since PE and insulation can still be tested.

In all cases testing should only be performed by those who are competent and in the case of testing electrical installations you will also need to be suitably qualified (Part P or BS 7671 , e.g. via City & Guilds 2393-10 or 2382).

Joined: Jun 2007
Posts: 98
Adept
Offline
Adept
Joined: Jun 2007
Posts: 98
In my understanding you can use whatever you like to test portable electrical equipment of any sort. The IET testing of portable appliances is a code of practice (and that's all) which you may adopt if you think fit. All you need to comply with the law is a system in place including documentation to show that you have methods to ensure that the equipment is electrically safe, how and when you choose to do that is entirely up to your risk assessment.


Barney
Page 1 of 2 1 2

Moderated by  Huw 

Link Copied to Clipboard
Who's Online Now
0 members (), 418 guests, and 292 robots.
Key: Admin, Global Mod, Mod
Newest Members
diodoled, Al BMET, Eng_VPG, Graham Oliver, Jawad
10,188 Registered Users
Forum Statistics
Forums25
Topics11,073
Posts73,785
Members10,188
Most Online5,980
Jan 29th, 2020
Powered by UBB.threads™ PHP Forum Software 7.7.5