Combined power supply plants consist of the input and distribution boards, isolating transformers and uninterruptible supply units with battery cabinets. The main functional elements of combined uninterruptible power supply plant are presented on figures below. Quantity and specification of component parts depend on version CPSP and calculated project power.
Automatic backup power switchboard
Automatic backup power switchboard (BABT) is used only amounting to CPSP 200 (R). Also it is possible to install BABT as separate power cabinet of guaranteed loads. BABT consists of the powerful circuits on three independent inputs, the mode of automatic load transfer, manual switching of powerful circuits and surge protection elements. The light indication and measurement devices are fixed on the right side for information of feeder’s condition and automatic load transfers.
Distribution board
Distribution board (DB) consists of the powerful circuits on three independent inputs, the mode of automatic load transfer, the output circuits of guaranteed (ABP exit) and parts of uninterrupted (USU exist) loads, electro warming of track switches and comb busbar. The light indication and measurement devices are fixed on the right side for convenient maintenance.
Transformer board
Transformer board (TB) consists of transformers isolated power poles of Interlocking systems, DC power supplier’s backup, different switching and protective elements including surge protection for terminal equipment.
Isolating transformer
Isolating transformer (IT) is intended for galvanic isolation of Interlocking systems from external power suppliers, equalizing of phase voltages values on an output. IT could be installed separately in protective hood or inside of TC (for CPSP ABTC).
Uninterruptible Supply Unit
Industrial Uninterruptible Supply Unit (USU) GE DE is designed for supply loads of Interlocking systems, not allowing breaks into power supply. USU provides reliable and uninterruptible power supply of connected load in mode “on-line”.
Battery cabinet
Battery cabinet (BC) is intended for placing USU storage batteries with different time of autonomy. Battery supplies electricity to USU inverter in case when voltage network is in unallowable bounders.