Siemens 3AD8 Operating Instructions Manual

Also see for 3AD8: Instruction manual Instruction manual

Restricted SMG-055 142022-02-103 Description3.1 RCU principleThe Remote Control Unit (RCU) is an outdoor device. The RCU works in partnership with Siemensswitchgear (Fusesaver or CMR) to increase network automation by allowing the utility control centreto be able to remotely monitor and control the switchgear. .Additionally, the RCU can be equipped with an operator panel to enable local operator control of theswitchgear. Operator Panel controls can trip and close the switchgear and change its protectionmode..Siemens switchgear is equipped with a short range radio (approx 20 m) to allow configuration andcontrol. In order to connect the switchgear into a utility SCADA system a Remote Control Unit (RCU)is required. For understanding of switchgear operation, refer to the relevant switchgear manual [6][2] .The RCU is a pole mounted enclosure containing a microprocessor, a short range radio and a longrange radio (or modem). The microprocessor retrieves data from the switchgear using the shortrange radio and sends it to the SCADA system using the long range radio. Incorporated into theRCU is a power supply system with a standby battery and provision for mains or solar power.This manual describes in detail the functions, configuration and maintenance of the RCU. Theintended users of this manual are the utility SCADA, operations and maintenance staff.Fig. 2 Installation of RCU with Fusesavers1 Conductor2 Fusesaver3 Communications Module4 Fuse or isolating link5 Remote Control unit6 Earth Connection7 Mains Connection8 Antenna for long range communicationsThe design and testing of the Remote Control Unit is according to the relevant parts of IEC 60950-1:2005 Information technology equipment – Safety.1 2547683