L2234
Emax
126/158
Model
Scale
Page No.
Doc. No.
Apparatus
1SDH000460R0002
L2778
16.1.5.1 PR021/K unit menu table
Protection Parameter / Function Values Notes
PR021K unit Present
Absent Leave as Absent if there is no PR021/K
Relay no. 1 / 2 / 3 / 4 / 6 / 7 / 8
Signal source function None
L Prealarm
L Timing
S Timing
L Trip
S Trip
G Trip
I Trip
Any trip
Custom - See par. 16.5
Delay 0...100 s step 0.01 s - Deliberate delay before activating the contact
NO/NC NO/NC - Contact normally-open (NO) or normally-closed (NC)
Latch ON/OFF - With the contact "ON", once it has been activated it
stays switched.
A specific reset action is needed to reset it
16.1.5.2 Important note
The unit must be connected to the PR122/P or PR123/P by means of an internal busbar with a shielded, corded two-wire cable
(see note A, par. 11.2.2) no more than 15 m long.
The shield must be earthed both on the circuit-breaker side and on the PR021/K side. For the installation and
operation of the PR021/K accessory, refer to the specific user manual.
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