Safety instructions for current transformers

Current transformer safety instructions

• The devices described are intended for installation by qualified electricians and may only be installed in electrical plant rooms or in closed housings. Any other use or the disregard of these application notes will result in the loss of the warranty/guarantee.
• Observe the applicable laws, standards and regulations.
• Observe the state of the art at the time of installation and the rules of technology.
• Observe the operating instructions and take into account the fact that these can only provide general instructions and that these must be observed.
• The devices may only be installed in dry indoor rooms.
• Do not mount the devices on or near highly flammable materials.
• Check the device carefully for transport damage prior to commissioning. The device must not be put into operation if it is mechanically damaged.
• Operation with a higher current than the rated current specified on the name plate can lead to overheating of the current transformer and thus to burns.

Risk of injury due to electric shock/arcing/burning

Observe the following instructions (Part 1)!

• The operator must ensure that this product is only installed and operated in perfect working order and by sufficiently qualified and authorized personnel.
• Intended use: industrial, stationary indoor use:
  The analog input devices extend the field of application of the Beckhoff Bus Terminal system with functions for measuring sensor signals via voltage, current or resistance. The intended field of application is data acquisition and control tasks in industrial automation. Use of the device beyond its intended use is not permitted.
• The decision to use and release for operation must be made by an electrotechnical specialist in accordance with the applicable safety rules (occupational health and safety) for the application. National regulations may have to be observed.
• Ensure proper wiring by following all local and national regulations.
• The cables and plugs used must be in the required measuring category or be approved for the applied voltages. Note: when laying such cables, it may be necessary to comply with installation specifications, such as those specified in EN 60204.
• The installation must be thoroughly checked for incorrect wiring before commissioning; appropriate cable labeling/marking is recommended.
• Voltages > 60 V DC / 48 V AC should not be supplied when the control cabinet is open. Supplying these voltages is only permitted in individual cases, when safety precautions have been taken by appropriately qualified personnel.

Risk of injury due to electric shock/arcing/burning

Observe the following instructions (Part 2)!

• Check the device before, during and after installation and periodically during breaks in operation for visible damage, such as damaged/cracked sockets/cables/plugs and loose parts. If damage is present, commissioning or further operation is prohibited.
• Ensure that the device and the wiring are de-energized on the field and bus side during installation/assembly/testing/disassembly. The 5 safety rules of electrical engineering must be observed:
  - De-energize
  - Secure against reconnection
  - Ensure that no voltage is present
  - Ground and short-circuit
  - Cover or isolate adjacent live parts
• Avoid foreign bodies entering the housing.
• Do not modify or attempt to repair the device.
• Do not open the device or interfere with the interior of the device.