Eaton InsulGard Installation And Start Up Manualline

Also see for InsulGard: User manual

Contents

InsulGard System Installation and Start Up Guideline11IPDS - Integrated Partial Discharge SensorsIPDS sensors are 80pF coupling capacitors (CC) with voltage ratings from 5kV to 38kV and special protection PCBboard built in. For sensor installation:a) Sensor must be reliably grounded.b) Correctly connect the coaxial cable to the sensor (Figure 1-10a). Don’t swap connection of the shield andcentral wire.c) Supplied HV jumper cable should be kept as short as possible to keep low the circuit impedanced) Provide right distances between sensors and their jumper cables connected to different HV phases and alsoto grounded surfaces. Rule of thumb: the distance should be the same as IPDS height for given voltageclass. Check clearance between signal cable and HV conductors.e) For rotating machines, be sure to install sensors on the HV phase leads and not on the neutral side of thewinding.RFCT Sensor - Radio Frequency Current TransformerRFCT Sensors can be installed on the shield grounding lead of each AC power phase or one sensor on all threephase shield grounding leads. Install it in proper direction of the arrow on the sensor’s label to Ground. Be sure thatthe wires grounding feeder shields don’t touch grounding surface before they go through the sensor (Figure 1-10b).a. Coax cable connection to IPDS sensor b. RFCT sensor installation on 3 phase ground shieldwiresFigure 1-10RTD-6 - PD sensor (for rotating machines only)The RTD-6 sensor uses RTDs (Resistive Temperature Detectors) installed in a rotating machine stator and work asa local RF antenna for PD pulses. This sensor connects up to 6 RTDs to capture PD signals, which originated in astator winding. This sensor is designed for replacing an existing RTD terminal board and does not affect temperaturemeasurements.a) Verify that the existing RTD termination box at the Motor frame is large enough to install the RTD module.Most RTD termination boxes are large enough to accommodate the RTD Module. Mounting dimensions ofthe board are:L*W*H = 7.15” * 2.05” * 0.8”;mounting holes have diameter 0.25” for #10 screw at 6.65” distance on the board axis;mounting tabs thickness is 0.25”.From feeders'shieldsTo the GroundBusAdditional shortground if originalground is 2' or longerTo a closestframe groundpointCoax Cable toa connectionboxThisDirection toGroundCentralconductorShieldThese wires must nottouch ground surface