3
Instruction Leaflet
IL01301051E
effective September 2013
Operating Manual for Series NRX
Trip Units - Digitrip™ 520/520M
EATON
www.eaton.com
•
WARNING! DANGEROUS ELECTRICAL VOLTAGE!
DO NOT ATTEMPT TO INSTALL OR PERFORM MAINTENANCE ON EQUIPMENT
WHILE IT IS ENERGIZED. DEATH OR SEVERE PERSONAL INJURY CAN
RESULT FROM CONTACT WITH ENERGIZED EQUIPMENT. ALWAYS VERIFY
THAT NO VOLTAGE IS PRESENT BEFORE PROCEEDING. ALWAYS FOLLOW
SAFETY PROCEDURES. EATON IS NOT LIABLE FOR THE MISAPPLICATION OR
MISINSTALLATION OF ITS PRODUCTS.
•
WARNING
OBSERVE ALL RECOMMENDATIONS, NOTES, CAUTIONS, AND WARNINGS
RELATING TO THE SAFETY OF PERSONNEL AND EQUIPMENT. OBSERVE AND
COMPLY WITH ALL GENERAL AND LOCAL HEALTH AND SAFETY LAWS, CODES,
AND PROCEDURES.
Before commencing the installation
• Disconnect the power supply of the device
• Ensure that devices cannot be accidentally restarted
• Verify isolation from the supply. Earth and short circuit
• Cover or enclose neighboring units that are live
• Danger if breaker mechanism spring is charged! Discharge spring
• Follow the engineering instructions of the device concerned
• Only suitably qualified personnel in accordance with applicable
national work safety regulations may work on this device/system
• Before installation and before touching the device ensure that you
are free of electrostatic charge
• Connecting cables and signal lines should be installed so that induc-
tive or capacitive interference do not impair the automation func-
tions
• Suitable safety hardware and software measures should be imple-
mented for the I/O interface so that a line or wire breakage on the
signal side does not result in undefined states in the automation
devices
• Deviations of the mains voltage from the rated value must not
exceed the tolerance limits given in the specifications, otherwise
this may cause malfunction and dangerous operation
• Emergency stop devices complying with IEC 60204-1, EN 60204-1
must be effective in all operating modes of the automation devices.
Unlatching the emergency-stop devices must not cause restart
• The electrical installation must be carried out in accordance with the
relevant regulations (e. g. with regard to cable cross sections, fuses,
PE)
• All work relating to transport, installation, commissioning and main-
tenance must only be carried out by qualified personnel in accor-
dance with applicable national work safety regulations
Noee:
N
The recNmmendaoiNns and infNrmaoiNn cNnoained herein are based
Nn experience and judgemeno, buo shNuld nNo be cNnsidered oN be all
inclusive Nr oN cNver every applicaoiNn Nr circumsoance ohao may arise.
If you have any questions or need further information or instructions,
please contact your local Eaton representative or visit
www.eaton.com.
