PANEL TYPE DNL-F, VSI 3/25

STANDARD FEATURES:
•    Compact & vermin proof design.
•    No fire Hazard.
•    Long Electrical & Mechanical Life.
•    Compartmentalized construction.
•    Incorporates reliable vacuum technology for switching
•    Earthed truck for earthing bus or line. Either single convertible truck for bus or line earthing or separate ones for each.
•    Manual / Motor charged trip free spring control mechanism with shunt closing and tripping coils.
•    Suitable for rapid autoreclosing duty.
•    Withdrawable or fixed PT (Bus or Line).
•    Earthed metallic shutters with unique integral device for retaining the dead section shutter in open position and restoring usual automatic features by insertion of breaker truck.
•    Safety interlocks to prevent:-

• Insertion of circuit breaker in ‘CLOSED ‘condition.
• Withdrawal of circuit breaker when it is in ‘closed’ condition. (Built in mechanical interlock can be unlocked only after tripping of breaker)
• Operation of circuit breaker in any position other than ‘ISOLATED‘ or ‘TEST’ or ‘SERVICE’ positions.

OPTIONAL FEATURES:
•    Self aligning control circuit plugs and socket arrangement. Automatic engagement before ‘TEST’ position while racking in and disengagement after ‘TEST’ position while racking out.
•    Single convertible circuit breaker truck for earthing line or Bus.
•    Emergency tripping facility (without opening front door)
•    CTD for automatic tripping of circuit breaker in the event of failure of control supply.

RATING:
•    Rated Voltage ( kV )                                                   :             36
•    Rated Insulation level (kV/kVp)                                  :             70 /170
•    Rated frequency (Hz)                                                 :              50
•    Rated normal current                                                 :             1250 / 1600 / 2000
•    Rated short time current (kA) for Duration (sec)        :             25 for 3
•    Rated peak withstand current (kA)                             :             63
•    Rated control voltage DC (V)                                     :             24 to 220 *
•    Rated auxiliary voltage AC (V)                                   :             230