The supply, from the battery voltage, provides the following : 48Vdc± 10% for the motorisation. This voltage shall be connected only in execute phase. 12Vdc for thetransmission devices. 12Vdc for the RTU modules. Power supply input Input voltage: 110Vac 230Vac ± 10% The power supply shall be insulated to 10kV and surge protected up to 20kV , in compliance with IEC60255-5. Battery The battery capacity shall maintain a backup time of 10 hours for all the voltage outputs and shall permit 10 Open/Close cycles of the switchgear. The single 12Vdc battery shall be periodically checked, and a battery fault shall be transmitted to the SCADA. The maximum battery charging time shall be 24hours Monitoring The power supply shall deliver the following statuses to the SCADA End of life detection Battery disconnected Absence of power input Voltage output faults Battery fault Any other data should be available through a serial link communication. Cyber Security In order to secure all controls and data acquisition, the RTU shall be designed to be compliant with NERC and IEC62351 requirements. The RTU shall support secure access based on RBAC, with the possibility to configure the roles. Local and remote access connection shall be secured for maintenance (locally and remotely) with HTTPS, SFTP, IPSEC and SSH protocols. Authentication shall be based on a Radius server. Future design Remote firmware update The RTU shall support remote firmware updates Centralised RBAC management The RTU shall be evolutive in order to be compatible with a full centralised RBAC management in compliance with IEC 62351-8 Hardening Device hardening Disabled or unused functionality shall not compromise security.
The supply, from the battery voltage, provides the following : 48Vdc± 10% for the motorisation. This voltage shall be connected only in execute phase. 12Vdc for thetransmission devices. 12Vdc for the RTU modules. Power supply input Input voltage: 110Vac 230Vac ± 10% The power supply shall be insulated to 10kV and surge protected up to 20kV , in compliance with IEC60255-5. Battery The battery capacity shall maintain a backup time of 10 hours for all the voltage outputs and shall permit 10 Open/Close cycles of the switchgear. The single 12Vdc battery shall be periodically checked, and a battery fault shall be transmitted to the SCADA. The maximum battery charging time shall be 24hours Monitoring The power supply shall deliver the following statuses to the SCADA End of life detection Battery disconnected Absence of power input Voltage output faults Battery fault Any other data should be available through a serial link communication. Cyber Security In order to secure all controls and data acquisition, the RTU shall be designed to be compliant with NERC and IEC62351 requirements. The RTU shall support secure access based on RBAC, with the possibility to configure the roles. Local and remote access connection shall be secured for maintenance (locally and remotely) with HTTPS, SFTP, IPSEC and SSH protocols. Authentication shall be based on a Radius server. Future design Remote firmware update The RTU shall support remote firmware updates Centralised RBAC management The RTU shall be evolutive in order to be compatible with a full centralised RBAC management in compliance with IEC 62351-8 Hardening Device hardening Disabled or unused functionality shall not compromise security.
rtu.docx