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Iriss Sonus PD Pro, Руководство по эксплуатации

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Sonus PD Pro

Operating Manual

Содержание Sonus PD Pro

Страница 1: ...Sonus PD Pro Operating Manual ...

Страница 2: ...mensions 7 Weight 7 Power Supply 7 Temperature 7 Relative Humidity 7 IP Rating 8 CE Compliance 8 The Sonus PD Pro Kit List 8 General Substation Safety Precautions 8 Access 9 Visual Inspection of Substation 9 Environmental Protection 9 The Sonus PD Pro Overview 9 The Sonus PD Pro Outline 9 Sonus PD Pro Input Output 10 Transient Earth Voltage TEV 10 Capacitive Coupler Sensor 11 Specification 11 ...

Страница 3: ...ttery level 12 Operating Modes 12 Mode Selection 12 TEV Mode 13 TEV Noise Detection 13 AE Mode 13 HFCT Mode 14 PD Detection Using HFCT 14 UHF Mode 15 PD Detection Using UHF Sensor 16 Display 16 Level Display 16 Live PRPD Display 17 Synchronisation 17 Persistent PRPD Mode 17 Sonus PD Pro App 18 Synchronisation Indication 18 Check Sonus PD Pro Function 19 Function Tester 19 ...

Страница 4: ...Check TEV Activity Levels 21 Example 1 Component Switchgear 21 Example 2 Fully Enclosed Switchgear 22 Step 2 Verify Whether Detected Activity is Noise or PD 22 Surveying Switchgear Panels for PD Acoustic 22 Step 1 Check Acoustic Activity Levels 22 Appendix A The Relationship Between PD and Criticality 24 Criticality 24 Partial Discharge 24 ...

Страница 5: ...ights reserved The contents of this manual are copyrighted property Duplication and distribution in any form particularly reprinting photographic mechanical or electronic reproduction or in the form of storage in data processing systems or data networks is prohibited without the consent of the copyright holder Revision 1 0 Date 01 01 2021 Subject to technical modifications ...

Страница 6: ...onusPDProisapartialdischarge PD detectioninstrument designed for use both in distribution voltage substations and EHV Switchyards It enables Network Operators to carry out routine tests that will identify discharge activity in switchgear AIS and GIS cables and high voltage accessories The battery powered portable device has a live display that shows a quantified level of PD activity A colour coded...

Страница 7: ...lators are prone to surface tracking particularly when dirty or wet where electrical stress across the insulator s surface causes discharge and deteriorates the insulator surface and creates carbon tracks This can lead to flashover and failure of the equipment Acoustic Radiation Physical Dimensions of Sonus PD Pro Dimensions The Sonus PD Pro has the following external dimensions excluding attachme...

Страница 8: ...y rules for the use of the Sonus PD Pro are as follows 1 Avoid working alone 2 Only accredited personnel with appropriate Health and Safety Training should use the equipment 3 Do not use the equipment if it is damaged or its safety is impaired in any way 4 The User should have read and understood the appropriate equipment manuals 5 Always select the appropriate sensor and sensor connection for the...

Страница 9: ...posed of Please use correct disposal methods in accordance with local regulations The device can be returned to IRISS at the end of use for proper disposal The Sonus PD Pro Overview The Sonus PD Pro Outline The Sonus PD Pro has a tough ABS enclosure with rubber protective covering around the built in TEV and ultrasonic PD sensors Both built in sensors are mounted at the front of the instrument so ...

Страница 10: ...y Bluetooth module Bluetooth 4 0 LE Table 2 Sonus PD Pro Input Output Transient Earth Voltage TEV Partial discharge activity inside a metal clad high voltage plant induces small voltage impulses called Transient Earth Voltages on the surface of the metal cladding These TEVs travel around the cladding surface to the outside of the equipment where they can be picked up using capacitively coupled tra...

Страница 11: ...he presence of moisture these contaminating layers give rise to leakage current over the insulator surface This heats the surface and through evaporation causes interruption in the moisture film Large potential differences are generated over the gaps in the moisture film and small sparks can bridge the gaps Heat from the sparks causes carbonisation of the insulation and leads to the formation of p...

Страница 12: ...p to operate in 2 channel mode or in 4 channel mode If the Sonus PD Pro will be used with either of the external PD sensors HFCT or a UHF PD sensor then it should be set to 4 channel mode If the Sonus PD Pro is only going to be used with the built in TEV and ultrasonic sensors then it should be set to 2 channel mode The Sonus PD Pro can be toggled between 2 channel mode and 4 channel mode by using...

Страница 13: ...The magnitude of pulses recognised as PD are displayed in large text in the centre of the screen in dB The magnitude of pulses recognised as noise are displayed on the right hand side of the screen in dB as shown in Figure 5 TEV Noise Detection Figure 5 PD Noise indication It should be noted that when high levels of noise are detected it can mask genuine PD It is advisable to use more sophisticate...

Страница 14: ...f PD in cables the Sonus PD Pro can be used with a High Frequency Current Transformer HFCT The HFCT is connected to the instrument using the BNC 2 1mm Jack cable as shown in Figure 7 HFCT Mode Partial discharge in cables induces small high frequency currents in the earth and the cable core These impulses travel along the cable to the termination where they can be picked up using an HFCT The HFCT s...

Страница 15: ...s PD are displayed in large text in the centre of the screen in pC nC The magnitude of pulses recognised as noise are displayed on the right hand side of the screen in pC nC IMPORTANT The HFCT signal cable does not provide electrical isolation for the HFCT The HFCT sensor should therefore never be placed near to high voltage components it should only ever be placed around fully earthed components ...

Страница 16: ... dBmV where 0dB 1mV PD Detection Using UHF Sensor Figure 12 PD in GIS Display The DISPLAY SELECT button is used to toggle between the different display modes Each time the button is pressed the screen display will change between the following screens in a loop Level Display Live PRPD Display and Persistent PRPD Display Display Selection This is the default display and shows the real time signal le...

Страница 17: ...er to display the PRPD in time synchronisation with the HV power cycle an internal field detector is used to pick up the field generated by the high voltage When this signal has been correctly detected a Sine Wave symbol appears in on the screen next to the level reading If the instrument has not picked up the synchronisation signal the Sine Wave symbol will not appear Synchronisation The third mo...

Страница 18: ... readings in real time Once the Instruments and App have been paired the Sonus PD Pro will display only a Bluetooth Symbol and all reading and monitoring functionality will transfer to the Sonus PD Pro App For further information please refer to the Sonus PD Pro App User Manual Sonus PD Pro App Figure 16 Sonus PD Pro App Synchronisation Indication Not Synchronised Synchronised Figure 17 Synchronis...

Страница 19: ...d AE signal The PD FT should only be used for checking functionality and not calibration The output of the PD FT is not calibrated and may vary The PD FT is battery operated When the battery level is low the Power LED will flash The Sonus PD Pro charger can be used to recharge the battery Whilst charging the LED will be bright and when fully charged the LED will return to normal intensity Hold the...

Страница 20: ...e 20 The AE sensor end of the PD FT should be held up against the sensor head using the two rubber extensions to regulate the distance between the PD FT and the Sonus PD Pro as shown in the picture The Sonus PD Pro should record a value of greater than 30dB to confirm correct operation Check The AE Function Figure 20 Testing AE function with PD FT ...

Страница 21: ...l and record the dB level shown on the Sonus PD Pro screen b If a single switchgear unit has more than one metal panel then the test should be carried out on each of them individually 3 Record the results using the Sonus PD Pro App Figure 21 Checking activity levels on each panel Note Always maintain Safety Distances between the instrument PD sensors the operator and any high voltage components Fi...

Страница 22: ...ed to the switchgear under test This will give a background reference level 3 If the activity level measured on the switchgear is more than 6dB higher on the switchgear than it is on the reference object then there is a high likelihood that the activity is discharge coming from within the switchgear Further investigative tests should be carried out using more sophisticated PD test equipment Step 2...

Страница 23: ...onus PD Alert Operating Manual Figure 24 Checking acoustic activity between switchgear panels Note Always maintain Safety Distances between the instrument PD sensors the operator and any high voltage components ...

Страница 24: ...ication of weak insulation and an increased probability of failure Both the magnitude and repetition rate are important in determining the influence of the PD and the following table is based upon the average total discharge activity per power cycle The table below is a guide to PD activity levels and the associated severity Partial Discharge Sensor LOW MEDIUM HIGH TEV 19dB 20 29dB 30dB AE 5dB N A...

Страница 25: ...25 2020 Sonus PD Alert Operating Manual ...

Страница 26: ...t notice Modification of this document is not permitted without written permission from IRISS Inc iriss com North Ameriaca HQ 1 941 907 9128 info iriss com LATAM 1 941 704 4445 info latam iriss com EMEA 44 0 1245 399 713 info emea iriss com APAC 1 941 524 3340 info apac iriss com ...

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