Technical Specifications for Voltage Controller. Parameter Specifications / Details Broad Features Objective of voltage controller is to optimize the energy consumption of street lights by voltage control during off-peak hours Dimming level and dimming times (Off-peak hours) should be remotely settable. Dimming may be carried out either through voltage control or any other suitable mechanism subject to adherence to minimum lux levels and other requirements as specified in the SIOM Agreement. Irrespective of the mechanism, the dimming would need to be in steps (up to 10%, 20% & 30%). Bidders may however note that a mechanism resulting in non-glowing/switching off of LEDs / an array of LEDs in a fixture is not permitted for dimming purpose. Should be compatible with Harmonic filters installed in feeder panels. And should take in to account Conditions of Supply Code, 2004 issued by OERC. Other than basic switching components, no other moving parts should be there. Rating and Certification s The rating of Voltage controller should be at least 1.3 times the lighting load as estimated for new LED Fixtures during the initial studies prior to replacement. Voltage Rating: 150V to 260V. Set output voltage should be within +/- 5V during dimming. 240 V AC 50 Hz Single Phase Two Wire Or 415 V AC 50 Hz Three Phase Four Wire Input Supply with 3 Taps to Control output voltage. Intelligent dimming should be there; during off-peak hours. If input voltage itself is below 30% of rated voltage, further voltage reduction should not happen. Standard Output Voltage Taps In each Phase at 150/180/210 V AC @ 240 V AC to ensure maximum energy saving during off-peak hours During voltage tap changing, lights should not be momentarily disconnected which will lead to re- ignition of lights. It is mandatory for supplier to make gapless changeover arrangement when changing from by-pass mode to & from lower voltage energy saving mode and interchanging between the taps. This should be achieved by supplier by any specialized arrangements. The user is expected to produce the Performance assessment certificate for minimum continuous 100 such changeover operations without any lamps going off in any of the three phases at minimum and Maximum supply voltage conditions. This certificate should be received from reputed Laboratory organizations like CPRI, ETDC, ERTL, IDEMI, SAMEER etc. Voltage controller to be compatible with a microprocessor based Dual Channel Almanac Timer controller in feeder panel to facilitate used defined program for dimming ...
