2 Safety Instructions
System Manual
6
MV Station is disconnected from the PV array.
Necessary warning signs are in place to prevent accidental reconnection.
2.2.4
Ground Fault Protection
If a ground fault occurs in the PV system, some parts that were voltage-free
before may contain lethal voltage. Accidental touch may cause serious damage.
Make sure there is no system ground fault before operation and take proper
protective measures.
2.2.5
Live Line Measurement
High voltages are present inside the device. Death resulting from burning and
electric shock upon touching the live components of the MV Station. During live
line measurement,
use suitable protective equipment, for example, dielectric gloves, and
accompany by other persons.
2.2.6
Measuring Instrument
Instrument for measurement of the electrical parameters should meet the requirements
listed below:
Instrument for measurement of the electrical parameters should be high quality
instrument with sufficient measuring range.
Make sure the connection and use of the instrument are correct to avoid arc and
other dangerous situations.
Use suitable protective equipment, for example dielectric gloves if live line
measurement is required.
2.2.7
Volt-free Operations
Perform operations on the MV Station only when all devices inside the MV Station, esp. the
MV Station are completely voltage free.
Avoid any accidental re-connections.
Verify that no voltage or current is present with appropriate testing devices.
Ground and short-circuit whenever necessary.
Cover possible live parts to avoid accidental contact.
Ensure sufficient escape room.
Wait at least 5 minutes after the MV Station stops completely to operate the module.
