CAT I - sydist.com · Quiz: identify the parts ... CAT 111 Seminar series . CAT 11 CAT IV CAT 1 CAT...

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CAT I Protected electronic equipment, such as the high-voltage section of a copier.

Transcript of CAT I - sydist.com · Quiz: identify the parts ... CAT 111 Seminar series . CAT 11 CAT IV CAT 1 CAT...

C AT I

Protected electronic equipment, such as the high-voltage section of a copier.

C AT II

Receptacle connected loads, such as home appliances and portable tools.

C AT III

3Æ distribution, such as switchgear and p• o• l • y• p•h•a•s•e• •m• o• t• o•r •s• • i •n• •f •i• x•e• d• •i•n•s•t•a•l•l•a•t•i•o•n•s•.• • •

C AT IV

3Æ directly connected to utility. •

Tes t meter certification Is the meter independently verified or just “designed to meet?”

Three phase systems in Cat III environments

• Confirm the test instrument is rated for the use. — drives are typically considered CAT III

• Use proper PPE—always.

• Combining CAT III instruments with lower rated accessories.

• Short circuiting floating differential test points with a common ground non-isolated multichannel input device.

• Holding the meter during testing.

Prop it up or hang it up.

Do Avoid

P ers onal protec tive equipment

Use PPE per NFPA70E

Tip: While there are a lot of “non-contact” meters that do not require

direct connection to contacts, proper PPE for the area must still be worn.

At what level are we troubleshooting?

Quiz: identify the parts of a motor s ys tem

Identify the elements of a 3 phas e motor drive s ys tem as the ques tion mark appears .