Siemens 7SR45 Argus User manual

Siemens Limited EMEA-T10022-00-7600 Page 1
WARNING
Dangerous voltages may occur in devices and modules during operation
depending on the design and application. Incorrect use of the devices can
therefore result in severe personal injury or substantial damage to
property.
Only suitably qualified staff should work on this device.
Correct and safe operation of this device is dependent on proper handling,
installation, operation and maintenance.
Should you require further information, or should particular problems
occur which are not handled in sufficient depth in the instructions of the
respective product, help can be requested through your local Siemens
Office or representative.
Mounting and Commissioning
Mounting
The physical dimensions of the relay and the required cut-out
dimensions are shown.
1. Create a slot of dimensions as shown in Figure 1-2 to house the
relay in the protection panel.
2. Flush the rear-side of relay into the protection panel cut-out.
3. Fasten the relay using the four M4x20 Pan Phillips SS screws with
nut provided in the 7SR45 self powered overcurrent and earth
fault relay packing box to the protection panel/cubicle.
4. Carry-out all other installation steps/wiring internally from the
protection panel.
5. In the rear terminal of the relay, execute the wiring process as
mentioned in scheme requirements. For more details about
terminal connector diagram, refer to, Figure 1-3.
Refer to Table 1.1 for the recommended terminal lugs to be used.
If needed, use washers from the kit to connect the current inputs
to X5 terminal.
6. The earthing cable should be wired as indicated in the Figure 1-3
using a non-stranded cable of 2.5/4 mm2 and this should be
terminated in the shortest possible path to the earth terminal/bus
bar in panel or cubicle.
7. Maintain a minimum clearance from the relay as given in Figure 1-1
to ensure safety and accidental touch of terminals. In case of
work area is restricted in a cubicle, then suitable protective
terminals to be provided in the cubicle.
Commissioning
Proceed the commissioning tests if the following criteria's are satisfied:
1. Equipment has not been damaged in transit (physical damage).
2. Equipment has been correctly connected and installed.
3. Remove the gland insulator from the battery compartment.
4. Characteristics of the protection and settings which are based on
calculations.
5. Confirm that settings have been correctly applied.
6. To obtain a set of test results for future reference is recommended.
Figure 1-1 Clearance for Terminal Wiring
Figure 1-2 Panel Cut-Out
Terminal / Wiring Diagram
The 7SR45 self powered overcurrent and earth fault relay should be
wired according to the scheme requirements and with reference to the
appropriate wiring diagram.
7SR45 Argus Quick Reference

Siemens Limited EMEA-T10022-00-7600 Page 2
7SR10 Argus Quick Reference Guide
s
7SR45 Argus Quick Reference
Terminal Blocks
Type/Cable
Specifications
Manufacturer/Part
number
Current Inputs
(Terminal X5)
Ring type lug/2.5 mm2
or 4 mm2control cable
Dowell's/RS009
or equivalent
Front
Communication
Port
USB 2.0, Type B
Tyco/974329-1 or
equivalent
Binary Input
(Terminal X1)
Pin type lug/1.5 mm2 /
2.5 mm2 control cable
Dowell's/CP9/CP1
or equivalent
Binary Output
(Terminal X2)
Pin type lug/1.5 mm2 /
2.5 mm2 control cable
Dowell's/CP9/CP1
or equivalent
Pulse Output
M3 screw-type plug-in
terminals suitable for
2.5 mm2/4 mm2cable
Dowell's/RS007 or
equivalent
Ground
Terminal
M3 ring type terminals
suitable for 2.5 mm2/
4 mm2cable
Dowell's/RS 613-
9334
Table 1-1 Recommended Terminal Lugs Specifications
Do’s
Follow the Do’s when installing the 7SR45 self powered overcurrent
and earth fault relay:
•During installation, follow the instructions provided herewith. For
more information, please refer the 7SR45 Argus User Manual
(EMEA-T10023-00-7600)
•Execute the wiring based on the scheme requirements and wiring
diagrams.
•Before energizing the relay, it should be ensured the relay is earthed
using protective terminal on the back plate and power supply plug.
Refer to, Figure 1-3.
Don’ts
Follow the Don’ts when working with the 7SR45 self powered
overcurrent and earth fault relay:
•Do not attempt to remove the relay without disconnecting all the
wires.
Output Test
After commissioning the relay, the operator can execute the output
test and verify the binary outputs assigned to the corresponding functions.
To execute the output test in the relay, follow the procedure:
1. In the Settings Mode, select Maintenance and Output Test.
2. For testing, select output by pressing ENTER.
3. Select Yes/No.
4. Perform the test by pressing ENTER.
Troubleshooting
This section provides the common problems and the recommended
solution to resolve the problem.
Observation Action
Relay does not
power up
•Check the phase connections based on
the terminal diagram and CT power is
applied (or)
•Check the relay is connected with USB
power (or)
•Check the battery is healthy
Relay won’t
accept the
password
•The password entered is wrong. Enter the
correct password.
•If correct password has been forgotten,
note down the numeric code displayed at
the Change Password screen.
•To retrieve the password, communicate
this numeric code to a Siemens Limited
Customer representative.
Protection
Healthy LED/LCD
flashes
•The relay may have insufficient current
from CT.
Cannot
communicate
with the relay
•Check the communication cable is
connected properly.
•Check that the USB driver is installed
correctly.
•Check that all the communications
settings matches with the settings used
by Reydisp Evolution.
Status inputs do
not work
•Check that the correct DC voltage is
applied and that the polarity is correct.
•Check that the status input settings such
as the pick-up and drop-off timers and
the status inversion function are correctly
set.
Low Battery
Indication
•Check the battery is connected with the
proper polarity.
•Check the battery is healthy.
Protection
Healthy is not
glowing
•The relay may not have CT current inputs.
For enquires please contact our customer support center:
Phone: [phone] (24hrs)
Fax: [phone]
E-mail: [email protected]