7
Disconnecting and Reconnecting
7.1
Safety When Disconnecting and Reconnecting Voltage Sources
Danger to life due to applied voltages
High voltages are present in the live components of the product. Touching live components results in death or serious
injury due to electric shock.
• Always disconnect the product from the power transmission path and from the control path if no voltage is
required for working on the product (see Section 7, page 96).
• After switching off the inverter, wait at least 15 minutes before opening it to allow the capacitors to discharge
completely (see Section 7.4, page 100).
• Wear suitable personal protective equipment of the corresponding hazard risk category for all work when the
power transmission path is connected. The hazard risk categories of the various areas of the product are
different. The areas are identified with warning labels.
• Wear suitable personal protective equipment for all work when the control path is connected.
• Always perform all work in accordance with the locally applicable standards, directives and laws.
• Do not touch any live components.
• Observe all warning messages on the product and in the documentation.
• Observe all safety information of the module manufacturer.
• The product must not be operated with open covers or doors.
Danger to life due to electric arcs if measuring device is not connected correctly
If the measurement points are incorrectly contacted, this can cause an electric arc. Electric arcs can result in death or
serious injury.
• Select the appropriate measurement range on the measuring device.
• Wear suitable personal protective equipment for all work on the device.
• Select correct measurement points.
Danger to life due to arc fault caused by fault in the medium-voltage switchgear
If there is a fault in the medium-voltage switchgear, arc faults may occur during operation of the product which can
result in death or serious injuries. If arc faults occur in the medium-voltage switchgear, the pressure evacuates under
the compartment of the medium-voltage switchgear.
• Only perform work on the medium-voltage switchgear when it is in a voltage-free state.
• Only perform switching operations on the medium-voltage switchgear from the service platform.
• Do not touch or access the roof of the medium-voltage switchgear when medium voltage is connected.
• When switching operations are performed, all persons that are not on the service platform have to keep a safe
distance from the product.
• All work and switching operations on the medium-voltage switchgear must only be performed by qualified
persons wearing adequate personal protective equipment.
7 Disconnecting and Reconnecting
SMA Solar Technology AG
System Manual
MVPS22JP-SH-en-11
96
Summary of Contents for 1000-1SC
Page 257: ......