General; Safety; Measuring The Intermediate Circuit Voltage - Fronius Primo serie Serviceanleitung, Ersatzteilliste

General

Safety

Measuring the in-
termediate circuit
voltage
WARNING! An electric shock can be fatal. Before opening the device
- Set power switch to -O- if there is one
- Disconnect the device from the grid
- Disconnect the inverter from DC power
- Use a suitable measuring tool to ensure that electrically charged components
(e.g. capacitors) are discharged
- Restrict access to the working area
- Implement measures to ensure that the metallic surfaces of the device can-
not be touched
- Wear suitable protective gear when inspecting/repairing the device
WARNING! An electric shock can be fatal. Danger of residual voltage from ca-
pacitors. Wait until the capacitors have discharged. Additional information on dis-
charge time can be found in the operating instructions and in the safety
information on the inverter.
WARNING! Incorrect operation and incorrectly performed work can cause seri-
ous injury and damage to property. Only qualified staff are authorized to commis-
sion your inverter and only within the scope of the respective technical
regulations. Do not start operation or carry out servicing and repair tasks before
you have read the chapter "Safety Instructions."
WARNING! An electric shock can be fatal. Danger from grid voltage and DC volt-
age from solar modules.
- The connection area should only be opened by an authorized electrician.
- The separate power stage set area should only be disconnected from the
connection area after first being disconnected from the grid power.
- The separate power stage set area should only be opened by service per-
sonnel trained by Fronius.
- Never work with live wires! Prior to all connection work, make sure that the
AC and DC wires are not charged.
WARNING! An inadequate ground conductor connection can cause serious inju-
ry and damage to property. The housing screws provide an adequate ground con-
ductor connection for grounding the housing and should not be replaced under
any circumstances by other screws that do not provide a reliable ground conduc-
tor connection.
NOTE! Requirements for electrical installations may be subject to national stan-
dards and regulations, and these must be followed accordingly.
A safety inspection must be carried out after the replacement, modification, main-
tenance or repair of a component (see section "Safety Inspection").
WARNING! Risk of electric shock! Despite the intended discharge circuit, a dan-
gerous voltage can be present in the intermediate circuit for a long time. To en-
sure safe operation, wait for the capacitors to discharge and then measure the
intermediate circuit voltage with a suitable measuring device. The voltage must
not exceed 30 V DC. The measuring points are shown in the following picture.
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