Re-Closing; Test Function - Eaton ZE/XTOM Series Manual

ZE/XTOM overload relays
32

Re-closing

After tripping, the bimetallic releases must first cool down
before the overload relay can be reset. Manual and auto-
matic reset can be selected by means of a selector switch
(a section "Reset" on Page 43).
In auto mode, the contacts automatically fall back after the
bimetallic releases have cooled down, whereas in manual
mode the tripping must be acknowledged locally on the
ZE/XTOM overload relay.
j
Danger!
For explosion protection, it is only permissible to
reset/switch on the motor protection relay manually, after
the bimetallic release of ZE/XTOM has cooled down, or
automatically via a control interlock circuit for the motor
or electrical machinery.
Resets may be carried out at the installation or by trained
personnel in the control room.

Test function

An additional Test button enables the operation of the
auxiliary contact to be checked. The Test button has a dual
function here:
• Pressing the Test button opens the break contact 95-96.
When the button is released, the break contact closes
again. This function can also be used to switch off the
motor manually.
• Pulling the Test button will trip the overload relay.
The N/C contact 95-96 opens and the N/O contact 97-98
closes. After the Test button is released, the overload relay
must be reset in the same way as after normal tripping
(a section "Re-closing" here).
09/15 MN03407003Z-DE/EN