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Title: High voltage sysytem
Description: Presentation on High Voltage System cable Testing Various illustrious procedure
Description: Presentation on High Voltage System cable Testing Various illustrious procedure
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High Voltage
System Testing
Presentation By
Roger Devery
Manager
REES High Voltage Division
29/01/2013
High Voltage, Data and Communications, Electronics, CCTV Systems
1
Standards – Paper Lead and
XLPE cable
Paper lead cables AS/NZS1026:2004 Electric
cables – Impregnated paper insulated for
working voltages up to and including 19/33 (36)
kV
XLPE cables AS/NZS1429
...
9/3
...
6) kV up to and including
19/33 (36) kV
HB242-2007 – High Voltage Mining Equipment
for use underground
29/01/2013
High Voltage, Data and Communications, Electronics, CCTV Systems
2
Tests after installation
What the standards say
Paper lead
AS/NZS 1026:2004 B3
29/01/2013
High Voltage, Data and Communications, Electronics, CCTV Systems
3
AS/NZS 1026:2004 B3 Continued
Any voltage test after installation should
be made with direct current, the value of
the voltage being that specified in
Table B3
...
No breakdown
should occur
...
c
...
6/1 (1
...
8/6
...
2)
6
...
5
20
...
0
3
...
0
25
...
7/22 (24)
19/33 (36)
34
...
0
50
...
0
Where switchgear can not readily be isolated from Terminals, the test
voltage is a matter of agreement between the parties concerned
...
1: 2006
APPENDIX F
(Informative)
29/01/2013
High Voltage, Data and Communications, Electronics, CCTV Systems
6
AS/NZS 1429
...
The d
...
testing of the
primary insulation is not recommended
...
1:2006 APPENDIX F Continued
F2 HIGH VOLTAGE A
...
TEST
AFTER INSTALLATION
An a
...
voltage test at power frequency
should be applied for 24h with the normal
operating voltage of the system
...
c
...
29/01/2013
High Voltage, Data and Communications, Electronics, CCTV Systems
8
AS/NZS 1429
...
29/01/2013
High Voltage, Data and Communications, Electronics, CCTV Systems
9
AS/NZS 1429
...
g
...
29/01/2013
High Voltage, Data and Communications, Electronics, CCTV Systems
10
Tests after installation
What the standards say
Paper Lead
HB242-2007
8
...
3 HV testing
29/01/2013
High Voltage, Data and Communications, Electronics, CCTV Systems
11
HB242-2007 8
...
3
...
c
...
29/01/2013
13
High Voltage, Data and Communications, Electronics, CCTV Systems
Accessories that affect test results
High leakage and
system faults will
generally not be in
the cable unless
there has been
physical damage
caused by mobile
machinery or
change in
conditions
...
isolators, high
tension
enclosures, inline
joints, couplers
and connecting
pins
...
Quantity of accessories
...
Age of system
...
Environmental conditions
...
C – Cable
AS/NZS1300 – Manufacturers 2x + 2kV (couplers)
AS/NZS1429
...
C
...
DC HiPot test – P/P
& P/E 15 minutes
...
29/01/2013
High Voltage, Data and Communications, Electronics, CCTV Systems
20
Recommendations (XLPE)
Insulation at 5kV for
60 seconds – P/P &
P/E
...
Insulation at 5kV for
60 seconds – P/P &
P/E
...
C
Title: High voltage sysytem
Description: Presentation on High Voltage System cable Testing Various illustrious procedure
Description: Presentation on High Voltage System cable Testing Various illustrious procedure