Activating The Test Mode; Preparing The Connection To The Test Equipment - ABB RELION REG670 Commissioning Manual

1MRK 502 067-UEN B
Set and configure the function(s) before testing. Most functions are highly flexible and permit
a choice of functional and tripping modes. The various modes are checked at the factory as
part of the design verification. In certain cases, only modes with a high probability of coming
into operation need to be checked when commissioned to verify the configuration and
settings.
11.2

Activating the test mode

Put the IED into the test mode before testing. The test mode blocks all protection functions
and some of the control functions in the IED, and the individual functions to be tested can be
unblocked to prevent unwanted operation caused by other functions. In this way, it is possible
to test slower back-up measuring functions without the interference from faster measuring
functions. The test switch should then be connected to the IED.Test mode is indicated when
the yellow StartLED flashes.
1. Browse to the TestMode menu and press
The TestMode menu is found on the local HMI under Main menu/Test/IED test mode/
TestMode
2. Use the up and down arrows to choose
3. Press the left arrow to exit the menu.
The dialog box
4. Choose
The yellow startLED above the LCD will start flashing when the IED is in test mode.
11.3

Preparing the connection to the test equipment

The IED can be equipped with a test switch of type RTXP8, RTXP18 or RTXP24. The test switch
and its associated test plug handle (RTXH8, RTXH18 or RTXH24) are a part of the COMBITEST
system, which provides secure and convenient testing of the IED.
When using the COMBITEST, preparations for testing are automatically carried out in the
proper sequence, that is, for example, blocking of tripping circuits, short circuiting of CTs,
opening of voltage circuits, making IED terminals available for secondary injection. Terminals 1
and 8, 1 and 18 as well as 1 and 12 of the test switches RTXP8, RTXP18 and RTXP24 respectively
are not disconnected as they supply DC power to the protection IED.
The RTXH test-plug handle leads may be connected to any type of test equipment or
instrument. When a number of protection IEDs of the same type are tested, the test-plug
handle only needs to be moved from the test switch of one protection IED to the test switch of
the other, without altering the previous connections.
Use COMBITEST test system to prevent unwanted tripping when the handle is withdrawn,
since latches on the handle secure it in the half withdrawn position. In this position, all
voltages and currents are restored and any re-energizing transients are given a chance to
decay before the trip circuits are restored. When the latches are released, the handle can be
completely withdrawn from the test switch, restoring the trip circuits to the protection IED.
If a test switch is not used, perform measurement according to the provided circuit diagrams.
Commissioning manual
Save changes appears.
Yes , press E and exit the menu.
Never disconnect the secondary connection of a current transformer circuit
without first short-circuiting the transformer's secondary winding. Operating a
current transformer with the secondary winding open will cause a massive
potential build up that may damage the transformer and cause personal injury.
E .
On and press E .
Section 11
Testing IED operation
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M11743-2 v8
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