Test On Protective Functions - ABB TS3 Instruction Manual

8 Test on protective functions

Prior to operate and / or carry out any replacements on the CB, this must be open, with discharged spring
and disconnected
Further, all connected power supplies must be disabled.
In order to re move and the following reinstallation of the trip unit on the CB, please refer to the
instructions or manual of installation of the CB and to the instructions sheet of the trip unit. These
docume nts are present in the USB key of theTS3
To verify the release of the docume nts, visit www.abb.com
The trip unit must only be tested in self-supply. Any connections to external supply or external battery
must be re moved ( ex. PR030/B, PR120/B, etc..)
It is possible to realize tripping test on the L, S, I, G protective functions available on the trip units.
In the trip unit where it is set the presence of an external toroidal, an alarm for disconnection will be
present on the display of the trip unit. To re move the massage it is necessary to disable the "external
toroidal" function.
In the trip unit where is set the differencial protection, an alarm " Gext sensor" for disconnection will be
present on the display of the trip unit.
Note3: Pay attention to the adjustments on the different protection functions of the DUT
As an example, with the following settings S I
will be active, but the trip will be caused by the fastest function (I).
To test the S function, set the I protection = Off, or adjust a lower value of current (tolerances included).
Note4: As the TS3 is a one-phase secondary current generator, with the G function available and enabled, this will be
always active; then in order to test the other protection functions it is necessary set the trip unit consequently.
As an example in order to test the L protection, set the G=Off.
888.902.6111
= 2In, 400ms and I =4In and Itest = 6In, both functions S and I
2
TS3 1SDH000670R0002
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