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7 Description of Connections JetWeb Parameters of external ballast resistor for this configuration: Value of the resistor: 88 Continuous power: 140 W or greater Maximum capacity: 3 kW for 0.6 s Type: Low inductivity This configuration causes the energy dissipation to be twice as high as it would be if configured with an internal resistor only. Still, half of the heat is still emitted inside the cover of the amplifier. In order to prevent this, a third variety of a configuration can be chosen: Use of external ballast resistor instead of the internal ballast resistor BRint UB- UB- UB+ UB+ UB+ BRc BRc Fig. 17: Wiring of X63 for the external ballast resistor only Mount the external ballast resistor between a terminal UB+ and a terminal BRc. (Remove the bridge between BRint and BRc.) 68 Jetter AG
