The main products

Spare parts spare parts, the DCS control system of PLC system and the robot system spare parts,

Brand advantage: Allen Bradley, BentlyNevada, ABB, Emerson Ovation, Honeywell DCS, Rockwell ICS Triplex, FOXBORO, Schneider PLC, GE Fanuc, Motorola, HIMA, TRICONEX, Prosoft etc. Various kinds of imported industrial parts

IS220PDIOH1A 336A4940CSP23 module

Injection signal Fig. 2.22 Wiring diagram for REX 011 for primary injection of the stator Fig. 2.23 Wiring diagram for REX 011-1 for secondary injection of the stator at the star-point Fig. 2.24 Wiring diagram for REX 011-2 for secondary injection of the stator at the terminals Fig. 2.25 Wiring diagram for REX 011 for rotor ground fault protection Fig. 2.26 Wiring diagram for REX 011-1, -2 for rotor ground fault protection Fig. 2.27 Wiring diagram for REX 011 for testing without the generator Fig. 2.28 Wiring diagram for REX 011-1, -2 for testing without the generator Fig. 2.29 Dimensioned drawing of the injection transformer block Type REX 011

Testing without the generator In order to test the operation of the injection unit Type REX 010 plus injection transformer block Type REX 011 or REX 011-1, -2 and the stator and rotor ground fault protection functions without them being connected to the protected unit, set up the test circuit shown in (Fig. 2.27 or Fig. 2.28). The two grounding resistors RE and RP are used for both stator and rotor protection schemes to simplify the circuit. The injection voltage of 50 V is also common to both (see Fig. 2.21). The ground fault resistance is simulated by the variable resistor Rf.

Stator ground fault protection: 

To test the stator ground fault protection, switch S1 must be kept closed all the time. The grounding resistor RE comprises two resistors of 1 k
and 22
. This is a simple method of simulating the ratio of the v.t. Settings MTR and REs: The theoretical value of MTR is determined as follows: MTR V V

22 1000 22 110 50 102 2    . The value of MTR is increased by a factor 110 V/50 V, because of the low injection voltage of 50 V. REs = 1022
. The settings can also be determined using the setting functions 'MTR-Adjust' and 'REs-Adjust' according to Section 3.5.24. which is be preferred to the above calculation. Rotor ground fault protection: To test the rotor ground fault protection, the switch S1 must be kept open all the time with the exception of when the coupling capacitor is bridged for setting mode 'AdjRErInp'. Settings: The theoretical settings are: REr = 1022
Ck = 4 µF The settings can also be determined using the setting functions 'REs-Adjust' and 'CoupC-Adjust' according to Section 3.5.25. which is to be preferred to the above calculation.