EMC tests of non-rad-tol DI/OT system
Levels of EMC environment as per standard 61000-4-4:
- level 1: well protected environment (e.g. computer room)
- level 2: protected environment (e.g. control room of instustrial plants)
- level 3: (5kHz, 100kHz, 2kV to power lines, 1kV to signal ports): industrial environment, no surpression of bursts, poor separation of industrial circuits, poor separation of power and signal cables
- level 4: (4kV to powerlines, 2kV to signal lines): heavy industrial, power plants, rely rooms
Possible test results:
- A - good performance
- B - some interuption that disapears after stopping test - automatic recovery
- C - temp loss of function but requires intervention (need to reset)
- D - not recoverable loss
EMC tests campaign 15 Feb 2023
Test setup
- 1x DI/OT Crate
- 1x Non-rad-tol System Board
- 2x Hartmann D575.00520 PSU
Performed tests
All timestamps in local time, tests performed according to the 61000-4-5 standard.
- Surge test on 230VAC power line (testing the PSUs) - PSU1
- 500V every 10s into L and N, 20 surges, test start 10:57 - all good
- 2kV every 10s into L and N, 20 surges, test start 11:03 - all good
- Surge test on 230VAC power line (testing the Hartmann PSU) - PSU2
- 500V every 10s into L and N, 20 surges, test start 11:09 - 11:13 - all good
- 2kV every 10s into L and N, 20 surges, test start 11:13 - 11:16 - all good
- Burst test- capacitive coupling, high voltage to all interfaces (standard 61000-4-4, 100kHz repetition freq, 750us burst duration, burst period 300ms)
- 500V, Mains cables PSU1 - test start 11:25 (10s) - all good
- 500V, Mains cables PSU1 - test start 11:26 (30s) - all good
- 2kV (std. 61000-4-4, level 3), Mains cables PSU1 - test start 11:27 (30s) - all good
- 500V, Ethernet shielded cable - test start 11:48 (30s) - all good
- -500V, Ethernet shielded cable - test start 11:49 (60s) - all good
- 1kV, Ethernet shielded cable - test start 11:52 (60s) - all good
- -1kV, Ethernet shielded cable - test start 11:56 (60s) - all good
- 500V, Ethernet unshielded cable - test start 12:00 (60s) - all good
- 1kV, , Ethernet unshielded cable - test start 12:01 (60s) - all good
- -1kV, , Ethernet unshielded cable - test start 12:03 (60s) - all good
- -2kV, , Ethernet unshielded cable - test start 12:05 (60s) - all good
- 2kV, , Ethernet unshielded cable - test start 12:06 (60s) - all good
Results
DI/OT crate setup passed all tests without any issues observed.