GE MI-869 Instruction Manual page 42

CAUTIONS AND WARNINGS
follow the cautions mentioned in the arc flash installation section.If a new appropriate Har
CAUTION:
FASTPATH:
FASTPATH:
1–32
The critical fail relay must be connected to annunciate the status of the device when
the Arc Flash option is ordered.
Ensure that the control power applied to the device, the AC current, and voltage input
match the ratings specified on the relay nameplate. Do not apply current or voltage in
excess of the specified limits.
Only qualified personnel are to operate the device. Such personnel must be thoroughly
familiar with all safety cautions and warnings in this manual and with applicable
country, regional, utility, and plant safety regulations.
Hazardous voltages can exist in the power supply and at the device connection to
current transformers, voltage transformers, control, and test circuit terminals. Make
sure all sources of such voltages are isolated prior to attempting work on the device.
Hazardous voltages can exist when opening the secondary circuits of live current
transformers. Make sure that current transformer secondary circuits are shorted out
before making or removing any connection to the current transformer (CT) input
terminals of the device.
For tests with secondary test equipment, ensure that no other sources of voltages or
currents are connected to such equipment and that trip and close commands to the
circuit breakers or other switching apparatus are isolated, unless this is required by
the test procedure and is specified by appropriate utility/plant procedure.
When the device is used to control primary equipment, such as circuit breakers,
isolators, and other switching apparatus, all control circuits from the device to the
primary equipment must be isolated while personnel are working on or around this
primary equipment to prevent any inadvertent command from this device.
Use an external disconnect to isolate the mains voltage supply.
LED transmitters are classified as IEC 60825-1 Accessible Emission Limit (AEL) Class
1M. Class 1M devices are considered safe to the unaided eye. Do not view directly with
optical instruments.
To ensure the settings file inside the relay is updated, wait 30 seconds after a setpoint
change before cycling power.
This product is rated to Class A emissions levels and is to be used in Utility, Substation
Industrial environments. Not to be used near electronic devices rated for Class B levels.
CHAPTER 1: INTRODUCTION
869 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL