Download TRANSMISSION TESTING SERVICES INDOOR OR AUXILIARY

TRANSMISSION
TESTING SERVICES
INDOOR OR AUXILIARY SWITCHBOARD TEST RESULTS
Test report no.
Date of test
Substation/location
Switchgear position/bay
Identification number
Reason for test
Summary of tests
Relevant Standard
Results
1. Resistance
a) Main circuit - panel to panel
b) Earth connections - panel to panel
c) Earth switches
SDI 535 Table 5.4.3
2. Insulation resistance – main circuit
SDI 535 Table 5.4.3
3. Power frequency withstand
a) Closed - Phase to phase and phase to earth
b) Open – across isolating distance of CB’s
SDI 535 Table 5.4.3
4. Voltage indicators operating correctly
SDI 535 Table 5.4.3
5. Partial discharge (including VT’s when fitted)
SDI 535 Table 5.4.3 & 5.4.6.3
6. Voltage transformers
a) Ratio
b) Polarity (performed by protection staff)
SDI 535 Table 5.4.6.3
Note: Contact resistance test performed by substations staff and reported separately.
No
Comments/notes
Tested by
FAE 3307 November 2011
Service no.
Reported by
HVT 0001 Section 17
Service no.
Page 1 of 8
NAMEPLATE DETAILS
Manufacturer
Type
Standard/specification/tender
Rated voltage
Insulation level
Year of manufacture
Serial no/s
Switchboard schematic
TRF 1
WH1806
WH1865
AS
WH1543
This sample obtained from system alteration
11KV SECT 1 2000A
notification
BBP
A
S
WH1239
A
WH1276
S
North
Parade
Cap 1
A
S
WH1213
Sunblest
Crescent
A
A
S
WH1250
Aux No1
S
WH1287
Byron
Crescent
WH1628
11kV section
A
S
T
WH1224
Spare
Photograph of switchgear (if available)
Paste photo if available
FAE 3307 November 2011
HVT 0001 Section 17
Page 2 of 8
DETAIL OF TEST RESULTS
Atmospheric conditions
deg. C
Atmospheric temperature
%
Atmospheric humidity
1.
Resistance
Limit – Comparable across phases or panels. Test current 1 to 10 Amps
a) Main circuit – panel to panel
Resistance
(Micro Ohms)
Connection
A Phase
B Phase
Result
C Phase
Sample CB 1234 to
CB 1235
Instrument asset no.
b) Earth connections – panel to panel
Connection
Resistance
(Micro Ohms)
Result
CB 1234 to CB 1235
Instrument asset no.
FAE 3307 November 2011
HVT 0001 Section 17
Page 3 of 8
c) Earth switches
Resistance
(Micro Ohms)
Connection
A Phase
B Phase
Result
C Phase
Instrument asset no.
FAE 3307 November 2011
HVT 0001 Section 17
Page 4 of 8
2.
Insulation resistance – main circuit
Limit - Minimum 50 G Ohms
Bus section 1
Equipment included in this test
Configuration
Sample C/Bs 1234, 3456, 4556 and bus section 1. (VT 12345 racked
out)
Test connections
Test
voltage
Insulation
resistance
Result
A–B+C+E
All C/Bs installed and closed
B–A+C+E
C–A+B+E
All C/Bs installed and open.
Test source connected to busbar side
5kV DC
A+B+C – a+b+c+E
Instrument asset no.
Bus section 2
Equipment included in this test
Configuration
Sample C/Bs 1234, 3456, 4556 and bus section 1. (VT 12345 racked
out)
Test connections
Test
voltage
Insulation
resistance
Result
A–B+C+E
All C/Bs installed and closed
B–A+C+E
C–A+B+E
All C/Bs installed and open.
Test source connected to busbar side
5kV DC
A+B+C – a+b+c+E
Instrument asset no.
FAE 3307 November 2011
HVT 0001 Section 17
Page 5 of 8
3.
Power frequency withstand
Limit – No disruptive discharge at 80% of factory test voltage (AS 62271.200 clause 7.105)
Bus section 1
Equipment included in this test
Configuration
Sample C/Bs 1234, 3456, 4556 and bus section 1. (VT 12345 racked
out)
Test connections
Test
voltage
Result
A–B+C+E
All C/Bs installed and closed
B–A+C+E
C–A+B+E
All C/Bs installed and open.
Test source connected to busbar side
A+B+C – a+b+c+E
Instrument asset no.
Bus section 2
Equipment included in this test
Configuration
Sample C/Bs 1234, 3456, 4556 and bus section 1. (VT 12345 racked
out)
Test connections
Test
voltage
Result
A–B+C+E
All C/Bs installed and closed
B–A+C+E
C–A+B+E
All C/Bs installed and open.
Test source connected to busbar side
A+B+C – a+b+c+E
Instrument asset no.
4.
Voltage indicators
All voltage indicators
checked to be operating
correctly and allocated to
correct phases
Result
Can be performed during
closed position PFW test
FAE 3307 November 2011
HVT 0001 Section 17
Page 6 of 8
5.
Partial discharge (Including voltage transformers when fitted)
Limit - Switchboard - Maximum 50pC at measure level
- Voltage Tx’s - Oil filled max 5pC, epoxy max 10pC (or less than switchboard) at measure level
# Notes:
1. Ur = 12,24,36,72.5 or 145kV as appropriate.
2. For units with single phase insulation
- single phase test arrangement use Ur/√3 measured phase to earth.
3. For units with three phase insulation
- three phase test arrangement use Ur/√3 measured phase to earth.
(AS 62271.200 Three phase procedure)
- single phase test arrangement use Ur measured phase to earth.
(AS 62271.200 Single phase procedure A)
All recorded voltages phase to earth (Peak/√2)
Sample C/B 1234, 3456, 4556 all closed, bus section 1 and VT 12345
racked in
Equipment included in this test
Partial discharge level (pC)
Discharge
inception
Phase
Background
noise level
(pC)
kV
pC
….. phase method used
Pre-stress level
= 1.3 ….
See note #
….. kV
(10 seconds)
Measure level
= 1.1 ….
See note #
….. kV
(1 minute)
Discharge
extinction
Result
kV
A
B
C
Notes
PD detector frequency settings
Centre frequency
kHz
Bandwidth
kHz
Calibrated at
pC
Instrument no.
Histogram of PD pattern (as required)
Phase
Test
voltage
Notes
FAE 3307 November 2011
HVT 0001 Section 17
Page 7 of 8
6.
In–built voltage transformers
Limits
Ratio - within 5% of nameplate (by voltage measurement)
Polarity – performed by protection staff as required
VT number
Measured secondary voltage with …….. applied
to primary winding
A Phase
B Phase
C Phase
Result
Polarity
confirmed
correct
Performed
by protection
staff as
required
Instrument asset no.
FAE 3307 November 2011
HVT 0001 Section 17
Page 8 of 8