RAD Data Communications airmux-200 Installation And Operation Manual - Handling Energized Products

Handling Energized Products  

General Safety Practices  

Do not touch or tamper with the power supply when the power cord is connected. Line 

voltages may be present inside certain products even when the power switch (if 

installed) is in the OFF position or a fuse is blown. For DC-powered products, although 

the voltages levels are usually not hazardous, energy hazards may still exist. 

Before working on equipment connected to power lines or telecommunication lines, 

remove jewelry or any other metallic object that may come into contact with energized 

parts.  

Unless otherwise specified, all products are intended to be grounded during normal use. 

Grounding is provided by connecting the mains plug to a wall socket with a protective 

earth terminal. If an earth lug is provided on the product, it should be connected to the 

protective earth at all times, by a wire with a diameter of 18 AWG or wider. Rack-

mounted equipment should be mounted only in earthed racks and cabinets. 

Always make the ground connection first and disconnect it last. Do not connect 

telecommunication cables to ungrounded equipment. Make sure that all other cables are 

disconnected before disconnecting the ground. 

Connection of AC Mains 

Make sure that the electrical installation complies with local codes. 

Always connect the AC plug to a wall socket with a protective ground. 

The maximum permissible current capability of the branch distribution circuit that 

supplies power to the product is 16A. The circuit breaker in the building installation 

should have high breaking capacity and must operate at short-circuit current exceeding 

35A. 

Always connect the power cord first to the equipment and then to the wall socket. If a 

power switch is provided in the equipment, set it to the OFF position. If the power cord 

cannot be readily disconnected in case of emergency, make sure that a readily 

accessible circuit breaker or emergency switch is installed in the building installation. 

Connection of DC Mains 

Unless otherwise specified in the manual, the DC input to the equipment is floating in 

reference to the ground. Any single pole can be externally grounded. 

Due to the high current capability of DC mains systems, care should be taken when 

connecting the DC supply to avoid short-circuits and fire hazards. 

DC units should be installed in a restricted access area, i.e. an area where access is 

authorized only to qualified service and maintenance personnel.