TAVRIDA ELECTRIC Rec15/25 Al1 5p, User Manual, Page: 20 / 136

20
Advanced CVCSs, control module (CM) and the circuit breaker technology allows unplugging the umbilical
cable when the device is in operation. The position of the main contacts will remain the same, as when the
umbilical cable is plugged unless there are preprogrammed actions. There are no hazardous voltages from
either side of the unplugged umbilical and it will not cause any injury.
The umbilical cable can be plugged in when the main line is energized.
Figure 22
General view of umbilical cable
1.3 Technical Parameters
Table 1
– Recloser technical parameters
Parameter OSM15_Al_1 OSM25_Al_1
Rated data
Rated maximum voltage (Ur) 15.5 kV 27 kV
Rated short-duration powerfrequency withstand voltage (Ud), 1 min dry 50 kV 60 kV
Rated short-duration powerfrequency withstand voltage, 10s wet 45 kV 50 kV
Rated lightning impulse withstand voltage (peak) (Up) 110 kV
Across vacuum gap 125 kV
Closed contacts 150 kV
Rated continuous current (Ir) 630 A
Rated cable-charging current switching 10 A 25 A
Rated line-charging current switching 2 A 5 A
Rated short-circuit breaking current (Isc) 16 kA 12.5 kA
Rated peak withstand current (Ip) 41.6 kA 32.5 kA
Rated short-time withstand current (Ik) 16 kA 12.5 kA
Rated duration of short circuit (tk) 4 s 4 s
Rated frequency (fr) 50/60 Hz
Switching performance
Mechanical life (CO-cycles) 30 000
Operating cycles, rated current (CO-cycles) 30 000
Electrical endurance, breaking current (O-CO cycles) See Figure 23
Closing time, not more than 77 ms
Opening time for overcurrent protection according to IEC 62271-
111/C37.60, not more than (at I>2xIp)
43 ms
Clearing time for overcurrent protection according to IEC 62271-
111/C37.60, not more than (at I>2xIp)
51 ms
Rated operating sequence O-0.1s-CO-2s-CO-2s-CO
General information
Main circuit resistance
< 85 μOhm < 95 μOhm
Weight 68 kg 72 kg
Altitude
2000 m (derating according to ANSI C37.60 applied above
1000m)
Humidity 100%, condensing
Solar Radiation
≤ 1.1 kW/m²
Temperature Range -
40 °C ... +55 °C
Type of driving mechanism Monostable magnetic actuator
Pollution level very heavy (as per IEC 60815)