STEP “R” TT bs/G – for exposed applications: IP 20
Power supply: 3 phase + N 400 / 230 V.
Power unit consisting of self-transformer with copper plate on a core column and with current pick-up
from windings via electro-etched rotating contacts. Current density at windings less than 3A/mm².
Self supporting frame made from galvanised, painted steel section bars predisposed for connecting
directly to hot galvanised anchor base (dimensions L. 600, H 1280, W 350).
Programmable control and settings panel complete with microprocessor equipped circuit boards for
managing work cycles and setting operating parameters, with remote override function for remote
installation power on and off control.
ON/OFF contact for remote indication of operating status / active alarm.
Programmable daily timer for normal/reduced voltage operating cycle.
Input for 1 analogue signal from externally mounted sensors for light compensation control (light
feedback).
Expandable electrical panel predisposed for remote management functions.
Programming function for the following parameters: power-on voltage, power-on time and upward and
downward gradient speeds.
Programmable, personalised reduction voltage and full light power settings.
Control panel consisting of powder coated steel cage with protection cover panel and for setting
operating parameters, reading display of incoming and out-coming voltage and out-coming current.
Screen displaying operating cycle progress, upward/downward gradients and system arrests due to
erroneous input voltage, output anomalies, control malfunctions and overload.
Automatic bypass in the event of malfunction and automatic power cut-off in the event of voltage
overload.
Outputs and inputs insulated from microprocessor circuit board.
General magneto-thermal switch; mains power, load and bypass circuit breakers.
Bipolar magneto-thermal switch to protect auxiliary circuits.
Three-position modular selectors for safety critical controls, concerning controlled operation and
regulator bypass, to ensure power even when control logic is absent or has been disabled.
All equipment is quality guaranteed in compliance with UNI EN 29001 regulations.