36 of 124  Construction of Giresun Wastewater Treatment Plant  Tender Dossier Volume 3 Employer’s Requirements  Section 08: Electrical Works  will have minimum IP65 protection class, fitted with self-cooling fans venting through filters, capable of 100 %  continuous RMS load up to 50 $^{0}$C, at least 110 % overload for 60 seconds and capable of providing constant  torque when high start torque required. All electronic parts shall be varnished against adverse effects of  wastewater environment or equally protected. Frequency converters shall be micro processor based, fully configurable and fitted with an internal multilingual  alphanumeric control panel with keypad-display for user interface for monitoring, adjusting parameters, manual  control and configuration of the converter. Frequency converters shall come with an extensive library of pre- programmed application macros to allow rapid configuration of its in and outputs.  Control panel of F/C’s are capable of placing onto the relevant compartment on MCC panel. Frequency converters shall have the following configurable in and outputs:  • Two analogue (4-20 mA) inputs.  • Two analogue (4-20 mA) outputs.  • Six digital inputs.  • At least two digital outputs.  All available signals shall be provided for telemetry and wired to the PLC for remote control and monitoring.  Motor starter for motor valves shall include the following:  There will be two port ethernet/BUS communication in actuator systems. (mechanical reference)  8.7.17 Motor valve controllers  • Motor circuit breaker, suitably rated miniature circuit breaker with overcurrent protection.  • Suitably rated miniature circuit breaker for the control circuit.  • Complete power and control circuit inside the actuator.  • Door mounted:  - Indicating lamps for fully opened, fully closed, malfunction. The following colours are to be  applied:   Valve fully opened "Green"   Valve fully closed "Yellow"   Valve malfunction "Red"  - Selector switch for hand-off-automatic (HOA) control. In position:   Hand: The operator controls operation of the motor by means of open/close switch  buttons. The automatic control system is bypassed.   Off: The motor is switched off and inoperative. The automatic control system is  bypassed.   Automatic (Auto): The motor is controlled by the automatic control system. The  open/close switch is inoperative.  - Open/close switch.  Actuators should have internal power and control units,  8_Vol3_d4 3_Section 8 electrical works_en_GIR rev6.doc 