K68 Series Protection Relay Test Set
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1.6Attention:
zThere are good Grounding picture in the right bottom of each interface menu.
The grounding link is abnormal if showing picture
In order to insure the test security and the accuracy of testing result, please check the power
supply whether the grounding is proper.
zIt is prohibited to connect the host instrument with 380V three-phase AC or DC power supply.
zBefore testing, the grounding line jack must be reliably grounding; otherwise it might damage
the Relay Tester.
zThe voltage circuit can not be short circuit or overload, and the load of the current circuit
should meet Impedance values under the given technical parameters so that avoid the overload
affecting the testing results.
zIn case that there is overload or short-circuit in the voltage generator, the Relay Tester will
automatically shut down the power of the amplifier power and give out warning signal.
Maximum current load in each phase is up to 0.55Afor the voltage generator.
zIn case that the large current has been output for a long time, and as a result, the power
amplifier’s temperature is at high degrees, the Relay Tester will automatically shut down the
power of the amplifier power and give out warning signal, User shall stop test right until the
amplifier power gets cool.
zBinary Input’s potential is directional. So better to use idle contact as usual.
zNegative terminals A, B, C of Binary input are all connected together, but not connected with
the public terminal ‘N’ of voltage / current output terminal and the ground wire (such as panel,
machine box) that is the suspending ground. Binary Input’s terminal is compatible with the idle
contact and the potential (10-250V). However, Binary Input’s terminal has directionality for the
input of the charged contact, as shown in the Figure below, A, B, C and R are connected with
the high potential (+),the negative terminal are connected with the lower potential (-) of the
charged contact, and then the computer can detect the overturn of the contact state. If the
connections are in reverse, what will always be detected will be the closed state.
zIf there is emergency in the process of the test, the Power Amplifier button must exit rapidly
and then to shut down the power of the host of Relay Tester.
