[KIEPE GTO VVVF] KVB K4000 Sound [Inductor Recorded] - Long Version

In this video you can hear the waveforms generated by the Kiepe Elektrik DPU 221 GTO-VVVF traction inverters of the Kölner Verkehrs-Betriebe AG (KVB) type K4000 tramcar. The sounds in this video were captured using an inductor, which captures electrical signals rather than 'regular' sound waves.

The K4000 is an articulated bi-directional light rail vehicle (LRV) that is 70% low-floor. Commissioning of the first vehicle took place in September 1995.
The electronic components used, especially those of the propulsion system, are also used in the vehicles built for other cities such as Düsseldorf (NF-GT-L), Saarbrücken (S1000) and Croydon (CR4000). The new high-floor vehicles of type K5000 are also equipped with components derived from the K4000.
The vehicles are equipped with two GTO heat-pipe cooled direct pulse inverters (DPU 211) that are directly fed from the overhead line. These power two maintenance-free asynchronous traction motors each. The fully sprung motors are completely sealed and self-ventilated. The design of the propulsion system allows the regeneration of up to 35 % of the energy used for traction.
The two independent auxiliary static converters use IGBT technology.

⸺⸺⸺⸺ Technical information ⸺⸺⸺⸺
Axle arrangement: Bo'2'Bo'
Traction converter: Kiepe Elektrik DPU 221
Input voltage: DC 750 V (+20%, -30%)
Output (continuous): 280 kW/310 kVA
Traction motor: 4 LXA 1442
Power (each): 120 kW
Rated voltage: 640 V
Rated current: 140 A
Rated frequency: 80 Hz
Rated speed: 2366 1/min
Maximum speed: 5600 1/min
Mass: 345 kg
Gear ratio: 7.225 : 1
Wheel diameter: 630-550 mm

⸺⸺ Join the VVVF Discord Community Server here! ⸺⸺
https://discord.gg/vvvf

=== Recording equipment ===
Inductor: Eagle A171
Recorder: Zoom F3
Recorded by PulsMeister.

======== Editing ========
This video was rendered and edited by PulsMeister.
Waveform software: Corrscope
Spectrogram software: Sonic Visualizer
Editing software: DaVinci Resolve Studio 20

Thumbnail picture: Michael Day via Flickr
(https://www.flickr.com/photos/bindonlane/8143004154)

Timestamps:
00:00 Intro
00:03 Acceleration
00:35 Pictures & Info
00:47 Deceleration
01:22 Acceleration 2
01:31 Acceleration 3
02:31 Acceleration 4
03:32 Acceleration 5
03:58 Acceleration 6
04:38 Acceleration 7
06:16 Acceleration 8
07:23 Acceleration 9
08:34 Acceleration 10
09:48 Acceleration 11
11:01 Acceleration 12
12:04 Acceleration 13
13:09 Acceleration 14
14:04 Acceleration 15
14:55 Acceleration 16
16:37 Acceleration 17
17:58 Acceleration 18
18:27 Acceleration 19
18:54 Acceleration 20
19:27 Acceleration 21
20:08 Acceleration 22
20:33 Acceleration 23
21:31 Acceleration 24
22:50 Acceleration 25
23:49 Acceleration 26

Видео [KIEPE GTO VVVF] KVB K4000 Sound [Inductor Recorded] - Long Version канала Tractioninverter