We test a wide range of low and medium voltage electrical equipment such as low voltage switchboards, switchgear, transformers and insulators to name a few. Have a look below for details such as the typical standards, rated voltage and maximum test capacities for that type of equipment...
Low Voltage Switchboards
We test a wide variety of switchboards such as:
- Main switchboards up to 6000A
- Distribution boards
- Feeder Pillars
- Consumer units
- Busbar trunking systems
As switchboard designs vary a lot, it is essential that sketches of the test item be supplied so that we can determine the extent of testing that is required. Please provide drawings in Adobe PDF or AutoCAD format. (Black & white PDF is our preferred format).
The typical standards include:
| Typical Standards | | Rated Voltage | | Maximum Test Current |
|---|
IEC 60439-1, 2, 3, 4
BSEN 60439-1, 2, 3, 4, 5
AS 3439-1, 2, 3 |
|
400 / 415 / 440 V
500 V
690 V
1000 V |
|
150 kA for 1 second
100 kA for 3 seconds
50 kA for 3 seconds @ 690 V
32 kA for 1 second @ 1000 V |
Low Voltage Switchgear
We test manufacturer’s air circuit breakers(ACB), moulded case circuit breakers(MCCB), fuse switches, disconnectors, automatic transfer switches(ATSE), motor starters and control devices, miniature circuit breakers(MCB), residual current devices(RCB) and residual current operated circuit breakers(RCOB).
Frequently manufacturers want to certify a range of equipment, i.e. a frame size. In this case we have to check each model within the frame size to confirm that we have a homogenous series and that there are no construction breaks. Construction breaks introduces additional testing and expense.
Typical standards include:
| Typical Standards | | Rated Voltage | | Maximum Test Current |
|---|
|
IEC 60947-1, 2, 3, 4
IEC 60898
IEC 61008
IEC 61009
AS 60947.1
AS 61008.1
AS 61009.1 |
|
230V |
|
85 kA for 3 seconds |
|
400 / 415 / 440V |
|
150 kA for 1 second
100 kA for 3 seconds |
|
500V |
|
50 kA for 3 seconds |
| |
1000V |
|
32 kA for 1 second |
High Voltage and Low Voltage Fuses
| Typical Standards | | Rated Coltage | | Maximum Test Current |
|---|
HV Fuses
IEC 60282-1, 2
AS 1033.1, 2 |
|
Breaking Capacity
6.6 / 7.2 kV
11 / 12kV
13.2 / 14.4 kV
22 / 24 kV |
|
36 kA
26 kA
20 kA
13 kA |
LV Fuses
IEC 60269-1, 2, 3
AS 60269-1, 2, 3
BS 88-1, 2, 3, 4 |
|
415 / 440 / 500 V
1000V |
|
80 kA
32 kA |
High Voltage Switchgear
We can test medium voltage switchgear assemblies and circuit breakers, Ring Main Units, Motor starters or combination units, earthing switches and disconnectors.
| Typical Standards | | Rated Coltage | | Maximum Test Current |
|---|
62271-100
62271-102
62271-105
62271-200
62271-203
IEC 60265
IEC 60470 |
|
Short-circuit making & breaking |
|
|
|
6.6 / 7.2 kV |
|
36 kA |
|
11 / 12 kV |
|
26 kA |
|
13.2 / 14.4 kV |
|
20 kA |
|
22 / 24 kV |
|
13 kA |
|
Switching |
|
|
|
Mainly Active |
|
630 A |
|
Capacitive |
|
200 A |
Transformers, Insulators and Arrestors
| Typical Standards | | Relevant Maximum Ratings |
|---|
Current Transformers
IEC 60044
BSEN 60044
AS 60044 |
|
Short-time Current – 100 kA / 1s, 60 kA / 3s
|
Lightning Arrestors
IEC 60099
AS 1307 |
|
Pressure Relief, Power Arc up to 36 kA |
Power Transformers
IEC 60076
AS 60076
BSEN 60076
AS 2374.1.2 |
|
Type tests up to 24 kV
Transformer Power Efficiency |
Earthing Transformers and Reactors
IEC 60289
AS 1028 |
|
Full type tests up to 24 kV |