IMU 3000 EMC Training Ring, CWG, and EFT Overview April 2020 Heather Darrah Regulatory Engineer Creating a better tomorrow™… ©2019 Regal Beloit Corporation, Proprietary and Confidential Agenda – MV Testing with IMU 3000 1. Overview of Equipment 2. Combination Wave (Surge) 3. Ring Wave 4. Electrically Fast Transient (EFT) 5. Using the Software Creating a better tomorrow™… ©2019 Regal Beloit Corporation, Proprietary and Confidential 11/26/2018 │ 2 IMU 3000 EMC Tester • High Voltage (up to 8kV) Waveform Generator • Test Capabilities • CWG aka Surge • Ring Wave • Electrical Fast Transient (EFT) • Voltage Dips (100% only) • Programmable from touch screen or laptop • On-line or Signal Output • 300VAC Max in (from wall power) • Single Phase • E-Stop for Equipment Creating a better tomorrow™… ©2019 Regal Beloit Corporation, Proprietary and Confidential 11/26/2018 │ 3 IMU 3000 Panel Close Up Creating a better tomorrow™… ©2019 Regal Beloit Corporation, Proprietary and Confidential 11/26/2018 │ 4 CDN-A-6-32 – Three Phase and High Voltage • 600 VAC MAX • 3 Phase • Used with fuse box • Not a generator Creating a better tomorrow™… ©2019 Regal Beloit Corporation, Proprietary and Confidential 11/26/2018 │ 5 Three Phase Connection Example Creating a better tomorrow™… ©2019 Regal Beloit Corporation, Proprietary and Confidential 11/26/2018 │ 6 Motor Set Up and Grounding • Installed ground rod • The entire top of the table is a ground plane • MV Tests require running at load Creating a better tomorrow™… ©2019 Regal Beloit Corporation, Proprietary and Confidential 11/26/2018 │ 7 Combination Wave (CWG or Surge) • High voltage, high energy, short duration • Simulate lightening strikes • Only performed between motor power lines • Per MV Test Plan – – – – – – – 4 couplings (L1-PE, L2-PE,L1-L2, L1+L2 – PE) 4 Voltage levels (3KV, 4KV, 5KV, 6KV) Positive and Negative Polarity (2) Repeated twice Random Phase Angle Allow 1 minutes between hits Total Time = 2*2*4*4 = 64 minutes long Creating a better tomorrow™… ©2019 Regal Beloit Corporation, Proprietary and Confidential 11/26/2018 │ 8 Ring Wave • High Voltage Oscillation • Electrical network switching, breakdown of power supply circuits, or lightning strikes • Only performed between motor power lines • Per MV Test Plan – – – – – – – – 4 couplings (L1-PE, L2-PE,L1-L2, L1+L2 – PE) 4 Voltage levels (3KV, 4KV, 5KV, 6KV) Positive and Negative Polarity (2) Repeated twice Random Phase Angle 100kHz Wave frequency Allow 1 minutes between hits Total Time = 2*2*4*4 = 64 minutes long Creating a better tomorrow™… ©2019 Regal Beloit Corporation, Proprietary and Confidential 11/26/2018 │ 9 Electrically Fast Transient (EFT) - Mains • High Voltage, lower energy, greater frequency • Switching transients occur by adding or removing loads from the system. • Motor must be floating off ground plane • Per MV Test Plan – – – – – 2kV Power 15ms duration 2.5kHz and 5 kHz frequency 300ms period (120s total test time) Couplings L, N, G, L+N, L+G, N+G, L1+N+G Creating a better tomorrow™… ©2019 Regal Beloit Corporation, Proprietary and Confidential 11/26/2018 │ 10 Electrically Fast Transient (EFT) - Signal • High Voltage, lower energy, greater frequency • Switching transients occur by adding or removing loads from the system. • Motor should be externally grounded (not only power lines) • Per MV Test Plan – – – – 1kV signal 15ms duration 2.5kHz and 5 kHz frequency 300ms period (120s total test time) Use capacitive clamp around signal wires Creating a better tomorrow™… ©2019 Regal Beloit Corporation, Proprietary and Confidential 11/26/2018 │ 11 Did We Pass? • Requires human oversight • Motor must remain in operable condition throughout test, without experiencing permanent damage • Motor can shut down after a hit, but must restart on it’s own • IMU 3000 will not tell you this, but can provide – Report of test conditions ran – Ability to pause tests Creating a better tomorrow™… ©2019 Regal Beloit Corporation, Proprietary and Confidential 11/26/2018 │ 12 Programming/Controlling Using the Laptop • Remote Programming/Running - TEMA DEMO • Individual tests can be arranged into sequence • If you update an individual test it will not automatically update in a sequence • This method is effective if testing requirements differ throughout the same test • T1ppt@ch • Limitations - cannot ramp voltage with polarity changes • https://www.emc-partner.com/emc-testsoftware?view=article&id=4998&catid=1185#do wnload Creating a better tomorrow™… ©2019 Regal Beloit Corporation, Proprietary and Confidential 11/26/2018 │ 13 Run Screen Creating a better tomorrow™… ©2019 Regal Beloit Corporation, Proprietary and Confidential 11/26/2018 │ 14 The End Creating a better tomorrow™… ©2019 Regal Beloit Corporation, Proprietary and Confidential 11/26/2018 │ 15
