81-775 series
81-775 series (named Moskva-2020, Russian: Москва́, English pronunciation: //məsˈkvɑː//) are types of metro cars designed by Metrowagonmash. Series consist of three types - 81-775 (head motor car), 81-776 (intermediate motor car) and 81-777 (intermediate non-motor car). The series has being in use by Moscow Metro since 2020.
| 81-775/776/777 | |
|---|---|
Moskva-2020 | |
| In service | 2020- |
| Manufacturer | Transmashholding (Russia) |
| Built at | Metrowagonmash (Russia) |
| Constructed | 2020- |
| Entered service | 2020 |
| Number built | 171 trainsets (1328 cars) (As of February 2024) 81-775 series: 128 8-car trainsets, 40 7-car trainsets |
| Predecessor | 81-765 series |
| Formation | 2 — 8 cars |
| Operators | Moscow Metro |
| Lines served | Moscow Metro Koltsevaya line |
| Specifications | |
| Car body construction | stainless steel |
| Doors | 4 pairs per car |
| Maximum speed | 90 km/h (56 mph) |
| Traction motors | asynchronous motor, TME 43-23-4 |
| Power output | 4x 170 kW (230 hp) per motor car |
| Acceleration | 1.3 m/s2 (4.3 ft/s2) |
| Deceleration | 1.1 m/s2 (3.6 ft/s2) |
| Electric system(s) | 750 V DC (mean) |
| Current collector(s) | third rail |
| Braking system(s) | electro-pneumatic early, disk brakes later. |
| Safety system(s) | SKIF-M, ALS-ARS (ATS-ASR), with ATO |
| Track gauge | 1,520 mm (4 ft 11+27⁄32 in) Russian gauge |
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