⚡This relief represents VVVF.
VVVF = Variable Voltage Variable Frequency.
Inverter = motor controller = Convert DC (direct current) to AC (alternating current) with VVVF.

1984~ Japan’s first 1500V-VVVF of New vehicle. 1421+1521. 1M1T. Kintetsu Railway.
This relief exists only 1421+1521.

Osaka line. Yamato-asakura station(D-43) ➡ Haibara station(D-45) 8.2km.
1:17~6:37 33.3‰⇗. Kintetsu train performance standards. For limited express 100km/h~.
Other 80km/h~.
2:20~2:55 Deer🐷 invasion prevention net.
3:49~ Departure.
8:18~ Exterior.
9:20~9:28 Manufacturing name plate.

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