Ring current collectors are designed to supply a DC voltage up to 440V AC and DC voltage up to 660V, frequency 50 Hz and 60 Hz from a fixed source to the movable parts of the pivoting or rotating mechanisms for cranes.
Series TKK, TKE
| Type of ring susceptor | Diameter column, mm | Number rings, pieces | Current carrying load on the ring A | Power protection | Weight, kg | |
| PV 100 % | PV 40 % | |||||
| ТКК-206 | 101-200 | 6 | 200 | 250 | IP00 | 22 |
| ТКК-209 | 9 | 27 | ||||
| ТКК-212 | 12 | |||||
| ТКЭ-209 | 9 | 250 | 300 | 50 | ||
| ТКЭ-214 | 14 | 64 | ||||
| ТКЭ-306 | 201-300 | 6 | 60 | |||
| ТКЭ-309 | 9 | 74 | ||||
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