HellermannTyton ACADEMY T419 Questions And Answers Download Page 3

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II

A. 

CONTINUITY OF ALL BONDING CONDUCTORS 

3

B. 

RESISTANCE OF EARTH CONTINUITY CONDUCTORS 

3

C. 

CONTINUITY OF RING CIRCUIT 

5

D. 

CONTINUITY OF RING CIRCUIT (TEST) 

5

E.

F.             

 

7/8

G. 

 

H.

I.  

EARTH RESISTANCE MEASUREMENT 

13

}

LOOP IMPEDANCE TESTS ON VARIOUS INSTALLATIONS

Figures

MODEL

TBM805 

DIGITAL MULTIMETER 

19

TBM251 

DIGITAL MULTIMETER 

19

TBM811 

DIGITAL MULTIMETER 

19

TBM3030 

CLAMP METER 400A AC (DIGITAL) 

19

T2600   

OPEN JAW CLAMP METER 

20

T98 

 

1000 A AC CLAMP METER 

20

TBM195 

2000 A AC/DC CAT IV CLAMP METER 

20

T500T   

600 A AC CLAMP METER 

20

T1132   

1000V ANALOGUE TESTER 

21

T1151   

1000V DIGITAL INSULATION TESTER 

21

TIN6A  

INSULATION TESTER 

21

T1125   

LPP/PSC/LOAD TESTER 

21

T1105   

ANALOGUE TESTER 

22

T2000   

TESTER 

22

T416   

EARTH RESISTANCE & RESISTIVITY 

22

T89 

 

COMPLIANCE/POWER ANALYSER 

22

T4137   

MILLIOHM METER 

23

T855   

3 PHASE SAFETY TESTER (Non Contact) 

23

T860   

PHASE ROTATION/MOTOR ROTATION TESTER 

23

TEL1TLB 

ELCB/SOCKET TESTER 

23

MACROG3 

TESTER 

24

TEL28   

ELCB TESTER (INDUSTRIAL) 

24

TEL11   

ELCB TESTER (INDUSTRIAL) 

24

WIBRE100 

VOLTAGE TESTER 

24

Instruments

1. 

WHAT IS AN ELECTRICAL INSTALLATION?  

1

2. 

WHO IS RESPONSIBLE? 

1

3. 

HOW CAN A LAYMAN KNOW IF THE INSTALLATION IS SAFE? 

1

4. 

WHERE TO OBTAIN A CERTIFICATE OF COMPLIANCE? 

1

5. 

WHAT MUST BE DONE BEFORE ISSUING A CERTIFICATE OF COMPLIANCE? 

1

6. 

WHAT ELECTRICAL TEST MUST BE CARRIED OUT? 

1

Tests to be done

7. 

CONTINUITY OF ALL BONDING CONDUCTORS 

1/2

8. 

RESISTANCE OF EARTH CONTINUITY CONDUCTOR 

2

9. 

CONTINUITY OF RING CIRCUIT (IF APPLICABLE) 

4

10.  

ISOLOCK TESTER    

5

11. 

EARTH LOOP IMPEDANCE TEST: MAIN SWITCH 

4/6

12. 

ELEVATED VOLTAGE ON NEUTRAL 

10

13. 

EARTH ELECTRODE RESISTANCE (IF REQUIRED) 

10

14. 

INSULATION RESISTANCE 

14

15. 

VOLTAGE (MAIN DB) NO LOAD 

14

16. 

VOLTAGE (MAIN DB) ON LOAD 

14

17. 

VOLTAGE AT AVAILABLE LOAD (WORST CONDITION) 

14

18. 

OPERATION OF EARTH LEAKAGE UNITS 

15

19. 

OPERATION OF EARTH LEAKAGE TEST BUTTON 

15

20. 

POLARITY OF POINTS OF CONSUMPTION 

15

21. 

ALL SWITCHING DEVICES, MAKE & BREAK CIRCUITS 

17

Tables

TABLE NO

1. 

EARTH CONTINUITY MAXIMUM RESISTANCE (TABLE 8.1 PG 276 OF SANS 1042-1:2003) 

2

2. 

CHECK TEST SHEET FROM SANS 10142 - PG285-286(o) 

18

Addendums

A. 

LIST OF RESISTANCE VALUES FOR EARTH CONTINUITY CONDUCTORS 

4

B. 

FRONT PAGE OF COL (PG 281-282 OF SANS 10142) 

9

C. 

PROSPECTIVE SHORT CIRCUIT CURRENT CALCULATIONS (PG 271 d OF SANS 10142-1) 

11

D. 

ANNEXURE K (PG 324e OF SANS 10142) 

16

Index

Summary of Contents for ACADEMY T419

Page 1: ......

Page 2: ...RS232 Interface or USB Frequency Voltage Phase Rotation 350 Memory Locations Description TCTRP Analogue Kit TCTDT Digital Kit TCTCDK Digital Kit DMM TBM811 Clamp Meter TBM3030 TBM3030 Insulation Test...

Page 3: ...24 Instruments 1 WHAT IS AN ELECTRICAL INSTALLATION 1 2 WHO IS RESPONSIBLE 1 3 HOW CAN A LAYMAN KNOW IF THE INSTALLATION IS SAFE 1 4 WHERE TO OBTAIN A CERTIFICATE OF COMPLIANCE 1 5 WHAT MUST BE DONE B...

Page 4: ...by the Chief Inspector of the Department of Labour in terms of the regulations as an electrical contractor QUESTION 5 WHAT MUST THE REGISTERED PERSON DO BEFORE ISSUING A CERTIFICATE OF COMPLIANCE TES...

Page 5: ...3 d Subtract previous reading b from this reading c to get the required reading e This reading shall not exceed 0 2 see note on table 8 1 on page 276 of code of practice SANS 10142 f All points must...

Page 6: ...9900 Cape Town 021 594 7100 Port Elizabeth 041 408 2400 Earth 3 Test Lead Insulation Tester Fig A Continuity of all Bonding Conductors Fig B Resistance of Earth Continuity Conductors Earth Insulation...

Page 7: ...ed can be written down as illustrated in addendum A below QUESTION 9a WHAT INSTRUMENT CAN BE USED TO TEST THE CONTINUITY OF THE RING CIRCUIT ANSWER Any meter with continuity buzzer function similar to...

Page 8: ...eference and Line 1 Blue Reading 115 Volts Socket Outlet Voltage Test 2 Test between Earth Reference and Line 2 Red Reading 115 Volts B Remove Multimeter and set switch to blue or red phase turn the p...

Page 9: ...92 Therefore the loop resistance of the circuit must be below 1 92 to allow a fault current of 120 amps to flow h Set the tester on the 2000A range on the PSC scale and measure the prospective short...

Page 10: ...iring resistance earth resistance and resistance of transformer winding Line earth loop resistance is the sum of wiring resistance earth resistance and resistance of transformer winding L1 Transformer...

Page 11: ...m of wiring resistance earth resistance and resistance of transformer winding Line earth loop resistance is the sum of wiring resistance earth resistance and resistance of transformer winding Transfor...

Page 12: ...mber of Phases One Two Three Phase rotation Clockwise Anticlockwise Frequency 50Hz Other d c Prospective short circuit current at point of control PSCC kA How determined Calculated Measured From suppl...

Page 13: ...rth c Spikes must be inserted in a straight line minimum spacing is 2m d If the ground is dry or sandy moisten with water Test spikes only e Where it is not possible to insert the auxiliary earth bars...

Page 14: ...that purpose or for the capacity supply or both In a balanced three phase system the three phase value can be estimated by multiplying the single phase value by 1 73 Note 2 Ensure that the instrument...

Page 15: ...r Impedance in Ohm A Z TRF Z TRF Z TRF 0 0144 V2 PX103 Z 100 x 4002 P x 103 4 5 100 x 400 x 400 500 x 103 0 045 x 160 000 500 000 0 045 x C The PSCC of complete system A B Z TRF Z conductor Z Total Is...

Page 16: ...ent Toptronic T1805 On a concrete floor not asphalt where auxilary earth bars cannot be driven lay the earth bars and make them moist with water before proceeding with measurement Earth Resistance Mea...

Page 17: ...epted QUESTION 14a WHAT INSTRUMENT CAN BE USED TO TEST THE VOLTAGE MAIN DB WITH NO LOAD ANSWER Any meter with voltage function similar to a Toptronic TBM811 b Toptronic TBM251 c Toptronic TBM3030 QUES...

Page 18: ...r similar to a Toptronic TEL1TLB b Toptronic T419 QUESTION 17b HOW IS THIS TEST DONE AND WHAT VALUE OF MEASUREMENT IS ACCEPTABLE ANSWER a Ensure ALL leads are disconnected all appliances unplugged sto...

Page 19: ...ion of a potential danger See 8 7 6 and 8 7 10 To The supplier From The registered person During an inspection in terms of SANS 10142 The wiring of premises performed at stand No situated at I Registr...

Page 20: ...2003 as illustrated in Addendum B Pg 9 g The results can only be correct if a fault is detected it must be rectified immediately QUESTION 20a WHAT INSTRUMENT CAN BE USED TO TEST ALL THE SWITCHING DEVI...

Page 21: ...safe Note 1 Indicate a or b or a and b on the test report Note 2 Indicate N A in the case of a or b where applicable 14 Where an alternative supply is installed it complies with the requirements in re...

Page 22: ...ut Warning Transient 6 5KV lightning surge Protection 1 2 50 s fuse Technical Specification Meter Supplied With Certificate of Conformence Meter Supplied With Certificate of Conformence TBM811 General...

Page 23: ...C Voltage 4 40 400 600V Resistance 400 4K 40K 400K 4M 40M Frequency 1KHz to 100KHz Capacitance 500n 5 50 500 3000 F Accuracy AC DC Current 2 5 5 Digit DC Voltage 1 0 4 Digit AC Voltage 4 40 400V 1 0 4...

Page 24: ...Source 8 x 1 5V AA Batteries Weight 655g Model Specification Technical Specification Insulation Test Voltage 250 500 1000V Insulation Resistance 250V 2k 2G 500V 4k 4G 1000V 8k 8G AC Voltage 0 to 700V...

Page 25: ...on earth probes without any cable breaking Measurement of leakage current on earth installations Setting of alarm thresholds on measurements Storage of measurement results Detection of current noise o...

Page 26: ...test 7mA for Phase rotation field indication Meter Supplied With Certificate of Conformence TEL1TLB SOCKET ELCB TESTER POLARITY Live on earth indication LCD Display Polarity indication Identifies 6 w...

Page 27: ...erminate own plug Dimensions mm 330 L x 260 W x 150 H Power Source 8 x C Batteries Weight 2 0kg Model Specification Current Settings 999mAac 50Hz Current Selection Knob Phase start selection 0 180 Ope...

Page 28: ...9 9900 Fax 031 569 9909 Cape Town Unit 11A Maitland Park Voortrekker Road Maitland Cape Town P O Box 453 Goodwood 7459 Tel 021 594 7100 Fax 021 594 7130 Johannesburg 34 Milky Way Avenue Linbro Busines...

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