Testing The Overload Release; Testing The Overload Relay Function (3Rv21) - Siemens SIRIUS 3RT Series System Manual

Current reduction
Current reduction is required at ambient temperatures above +60 °C. The maximum
permissible current setting for an ambient temperature of +70 °C is indicated on the scale by
a slightly longer mark on the scale. You can find more information about derating in the
chapter titled Application environment (Page 396).
4.8.2

Testing the overload release

The table below shows the procedure for testing the motor starter protector's overload
release:
Step
1
2 / 3
Result
If the rotary button snaps into the tripped setting, the test was successful.
4.8.3

Testing the overload relay function (3RV21)

Step
1
Result
The connected contactor disconnects.
SIRIUS Innovations
System Manual, 01/2011, A8E56203870002-03
Operating instruction
Turn the rotary button from O to I.
Insert a screwdriver into the test opening
and push it to the left.
Operating instruction
The control circuit must be energized.
Insert a screwdriver into the test opening
and push it down.
SIRIUS 3RV2 motor starter protectors
Figure
TEST
Figure
TEST
4.8 Operation
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