Terminal Strip; Anti-Condensation Heaters; Function Checks - Siemens 3AP2-FI Operation & Maintenance Manual

A Cheese-head screw M 10x70
18.16 Release CLOSE
18.21.1 Support lever
18.21.2 Reversing lever
18.21.4 Hex. screw 4x (M6x40)
18.8 Release OPEN
Fig. 70 Latching block
6.4.9

Terminal Strip

Check the terminal connections for firm seating and the terminals for damage.
6.4.10

Anti-Condensation Heaters

Check the effectiveness of the anti-condensation heating and the function of the existing monitoring device if
applicable.
6.4.11

Function Checks

6.4.11.1 Functional Check, Trip Circuits
Check the tripping action of the circuit-breaker via all the existing tripping paths.
6.4.11.2 Functional Check Lock-Out
6.4.11.2.1 Functional Check, Reclosing Lock-Out
During the process of charging the closing spring, the effectiveness of the reclosing lock-out must be checked by
means of an electrical CLOSE command. The tripping coil must not operate.
Perform this check at all poles.
6.4.11.2.2 Functional Check SF
At a level below the operating pressure, check the signal and the effectiveness of the function lockout SF
by means of electrical CLOSE and OPEN commands in all tripping paths. The circuit-breaker must not operate.
Lockout
6
6 Maintenance
lockout
6
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