Electrical Inspection
Device Protection
!
DANGER
Danger when connecting the 7SR5 device
Noncompliance with the safety notes will result in death, severe injury or considerable material
damage.
²
The device must be situated in the operating area for at least 2 hours before you connect it to the
power supply for the first time. This prevents condensate from forming in the device.
²
If the device has been in storage for more than 2 years, connect it to an auxiliary voltage for 1 to 2
days. This will cause the electrolytic capacitors on the printed circuit‑board assemblies to form again.
•
Perform the electrical inspection.
Earthing a Device
The 7SR5 devices are protection class I equipment and must be connected to the system earth prior to
commissioning.
•
Terminal B28 (power supply unit) should be connected to the case earth stud. A minimum wire size of
2.5 mm
2
is recommended.
The case earth stud should be solidly earthed to the panel earth. Located at the top rear of the case is a
case earth stud, this must be connected to the main panel earth.
Connecting a Device
•
Connect all cables and lines. Use the connection diagrams in the Hardware and Device manuals. Use the
screws provided.
•
Tighten the terminal screws. The rear terminal blocks comprise M4 female terminals for wire connec-
tions. Each terminal can accept 2 x M4 diameter crimps.
Safety Notes
!
DANGER
Danger during electrical inspection
Noncompliance with the safety notes will result in death, severe injury or considerable material
damage.
²
Comply with all given safety notes when carrying out the electrical inspection.
²
Please note that hazardous voltages are present when you perform the electrical inspection.
•
During the electrical inspection, check that the device becomes ready for operation once it has been
connected to the power supply.
Performing the Electrical Inspection
•
Connect the power supply via an external HRC fuse rated at 6 A (BS88/IEC 60259).
•
Ensure that the correct auxiliary supply voltage and polarity is applied to B22 and B24 terminals, by using
diagrams for the relay connections. Terminal B28 should be connected to the case earth stud.
1.3
First Steps
1.3 Electrical Inspection
Reyrolle 7SR5, Operating, Manual
15
C53000-B7040-C013-1, Edition 05.2021
Содержание Reyrolle 7SR5
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