Operation; 3Rr21 Basic Analog Setting Current Monitoring Relay; Parameters - Siemens SIRIUS 3RT Series System Manual

SIRIUS 3RR2 current monitoring relays

8.8 Operation

8.8 Operation
8.8.1

3RR21 Basic analog setting current monitoring relay

8.8.1.1

Parameters

Operator controls
The analog setting current monitoring relay has 4 rotary buttons and 1 slide switch for setting
parameters. To make changes to the settings, you need a screwdriver.
Figure 8-3
Parameters
The following parameters can be set:
● ON-delay time (onDel)
● Tripping delay time (Del)
● Threshold value for current overshoot (I▲)
● Threshold value for current undershoot (I▼)
● Automatic/manual RESET (Memory)
Required tools
To set the parameters, you can use the same screwdriver as for mounting the current
monitoring relay (Pozidriv size 2 for size S00 or Pozidriv size 3 for size S0).
704
Operator controls on the analog setting current monitoring relay
SIRIUS Innovations
System Manual, 01/2011, A8E56203870002-03