DEWA Power Transformer Site Test Report Format



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Download DEWA Power Transformer Site Test Report Format
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MD(Trafo)/ST/02 Page of GENERAL DATA HV LV RATING – ONAN / ONAF MVA NOMINAL VOLTAGE kV FULL LOAD CURRENT (RATED TAP) A VECTOR GROUP SHORT CIRCUIT IMPEDANCE HV/LV % Max Tap ( 1 ) Rated Tap ( ) Min Tap ( ) TYPE/FORM (given by manufacturer) YEAR OF MANUFACTURE ZERO SEQUENCE IMPEDANCE NO OF TAPS NO OF FANS NO OF PUMPS NO OF RADIATORS TYPE OF OIL TOTAL OIL QUANTITY BREATHER TYPE OLTC MAKE / MOTOR OLTC TYPE / MOTOR TOTAL WEIGHT CONSERVATOR TYPE NEUTRAL GROUNDING METHOD TRAFO TYPE (ICT, IBT, IDT Etc) SUB STATION VOLTAGE COMMISSIONING DATE OF S/S COMMISSIONING DATE OF TRAFO TYPE OF INSULATION PAPER NORMAL / THERMALLY UPGRADED DATA ENTERED CHECKED APPROVED Signature: Signature: Signature: Name: Designation: Dept/Company: Name: Designation: Dept& section: Name: Designation: Dept& section: Contract No : Sub Station : TRANSFORMER SITE TEST REPORT Trafo ID Contractor Manufacturer Date of test Sl No DEWA MD(Trafo)/ST/03 Page of Contract No Sub Station : : TRANSFORMER SITE TEST REPORT Trafo ID Contractor Manufacturer Date of test Sl No FINAL CHECKS Correctness of oil level in all bushings and oil filled chambers All air release plugs (including radiators)& Buchholz relays vented Pressure relief diaphragm intact All bushing connections checked Neutral & Transformer Earth connection satisfactory Position of all switches in MK & MDU – ON position All CT connections are through / shorted WTI Ammeter circuit link connections are correct CT test windings open No damage for insulators and clean No oil leakage Rating, diagram, Id plates fitted satisfactorily Dehydrating breathers satisfactory and pipe work joint is tight All cabling and wiring visually satisfactory All valves are in correct operational position with respect to valve schedule diagram (Ensure valves on both sides of relays and to HV cable box are open) All valves labeled & locked and blanking covers provided wherever necessary All protective and cable box covers fitted All pre-commissioning tests (including oil tests) completed & results are satisfactory Copies of test reports available Condition of Gland earthing of all cables in MK & MDU Permanent Identification tags for all control cables on both ends Availability on marked up drawing copy MK & MDU Close all opening (center cable) in to AVR panel MK and HV/LV cable box CHECKED WITNESSED APPROVED Signature: Signature: Signature: Name: Designation: Dept/Company: Name: Designation: Dept& section: Name: Designation: Dept& section: DEWA MD(Trafo)/ST/16 Page of Contract No : Sub Station : TRANSFORMER SITE TEST REPORT Trafo ID Contractor Manufacturer Date of test Sl No INSULATION RESISTANCE CHECK OF DEVICES / CONTACTS Sl No Device/Component Test voltage Ambient Temp Terminals numbers in MK IR value (M Ohms) Remarks 1 HV bushing – test tap N/A 2 HV-N bushing – test tap N/A 3 Buchholz relay 4 Oil level gauge (MT) 5 Oil level gauge (OLTC) 6 Rubber bag failure relay 7 PRD (MT) 8 PRD (OLTC) 9 OLTC surge relay 10 OTI 11 WTI - HV 12 WTI - LV 13 Heater – HV cable box 14 Heater – LV cable box 15 Heater – Marsh kiosk 16 Heater - MDU 17 18 19 20 Instrument Name, Make & Serial no Calibration due date TESTED WITNESSED APPROVED Signature: Signature: Signature: Name: Designation: Dept/Company: Name: Designation: Dept& section: Name: Designation: Dept& section: DEWA MD(Trafo)/ST/23 Page of Contract No : Sub Station : TRANSFORMER SITE TEST REPORT Trafo ID Contractor Manufacturer Date of test Sl No OIL LEAK TEST OF TRANSFORMER Hourly Reading/ details: Date Time Ambient Temp ( °C) Tr OTI reading (°C) Pressure at Top (Bar) Pressure at Transformer Bottom (Bar) Result / observation Remarks ----- Before the application of Pressure Pressure gauges- Make & Serial no Top Bottom Calibration due date TESTED WITNESSED APPROVED Signature: Signature: Signature: Name: Designation: Dept/Company: Name: Designation: Dept& section: Name: Designation: Dept& section: DEWA MD(Trafo)/ST/15 Page of Contract No : Sub Station : TRANSFORMER SITE TEST REPORT Trafo ID Contractor Manufacturer Date of test Sl No TAP POSITION INDICATION CHECK: Tap Positi on MDU Input to Transducer Transducer output for TPI (mA) at AVR panel Transducer (SCADA) Output (mA) Tap Position at AVR Panel Tap Position at DCS Tap Position at SCADA Remarks 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 Instrument Name, Make & Serial no Calibration due date TESTED WITNESSED APPROVED Signature: Signature: Signature: Name: Designation: Dept/Company: Name: Designation: Dept& section: Name: Designation: Dept& section: DEWA MD(Trafo)/ST/26 Page of Contract No : Sub Station : TRANSFORMER SITE TEST REPORT Trafo ID Contractor Manufacturer Date of test Sl No TEST ON TRANSFORMER OIL AFTER COMPLETE SITE PROCESSING Sl No Property Unit Requirement as per Spec Test Result Remarks 1 Breakdown Voltage 2 Water Content 3 Dissipation Factor at 900C 4 Resistivity at 900C 5 Neutralization Value 6 Interfacial Tension 7 Oxidation Stability 8 Flash Point 9 Inhibiter Content 10 Corrosive Sulphur Content (Test certificate from independent test laboratory is attached) Instrument Name, Make & Serial no Calibration due date TESTED WITNESSED APPROVED Signature: Signature: Signature: Name: Designation: Dept/Company: Name: Designation: Dept& section: Name: Designation: Dept& section: DEWA MD(Trafo)/ST/25 Page of Contract No : Sub Station : TRANSFORMER SITE TEST REPORT Trafo ID Contractor Manufacturer Date of test Sl No TEST RESULTS / PROPERTIES OF INSULATING OIL BEFORE FILLING IN THE TRANSFORMER Property Unit Test Results Remarks Kinetic viscosity at 400C – 150C mm2 / S Flash Point 0C Pour Point 0C Appearance Density at 200C kg/dm2 Interfacial tension at 250C N/m Neutralization Value mg KOH/g Corrosive Sulphur Water Content mg/kg Antioxidant additives DBPC Wt % Oxidation stability Induction period h Breakdown Voltage kV Dissipation factor at 900C and 40 Hz to 60 Hz (Copy of Test certificate from oil manufacturer is attached) Instrument Name, Make & Serial no Calibration due date TESTED WITNESSED APPROVED Signature: Signature: Signature: Name: Designation: Dept/Company: Name: Designation: Dept& section: Name: Designation: Dept& section: DEWA MD(Trafo)/ST/11 Page of Contract No : Sub Station : TRANSFORMER SITE TEST REPORT Trafo ID Contractor Manufacturer Date of test Sl No CALIBRATION OF OIL & WINDING TEMPERATURE INDICATORS 1 OIL TEMPERATURE INDICATOR MAKE: TYPE: SERIAL NO BATH TEMPERATURE (0C) INDICATOR READING (0C) ALARM CONTACT SETTING (0C) OPERATION OF CONTACTS (0C) TRIP CONTACT SETTING (0C) OPERATION OF CONTACTS (0C) Remarks: - 2 WINDING TEMPERATURE INDICATOR (HV) MAKE: TYPE: SERIAL NO BATH TEMPERATURE (0C) INDICATIOR READING ( 0C) ALARM CONTACT SETTING (0C) OPERATION OF CONTACTS (0C) TRIP CONTACT SETTING (0C) OPERATION OF CONTACTS (0C) Remarks: - 3 WINDING TEMPERATURE INDICATOR (LV) MAKE: TYPE: SERIAL NO TEST TEMPERATURE (0C) INDICATIOR READING (0C) ALARM CONTACT SETTING (0C) OPERATION OF CONTACTS (0C) TRIP CONTACT SETTING (0C) OPERATION OF CONTACTS (0C) Remarks: - Make and SlNo of Temp Bath Calibration due date TESTED WITNESSED APPROVED Signature: Signature: Signature: Name: Designation: Dept/Company: Name: Designation: Dept& section: Name: Designation: Dept& section: DEWA MD(Trafo)/ST/09 Page of MEASUREMENT OF TAN DELTA & CAPACITANCE Ambient temp - Top oil temp - a) Transformer Winding: CAPACITANCE (pF) Sl No APPLIED VOLTAGE (kV) Measured combination Measured Value Factory Value Difference (%) CURRENT (mA) Dissipation Factor (TAN DELTA) (%) 1 2 3 4 5 6 b) BUSHINGS Make and Type of bushings: CAPACITANCE (pF) Sl No Applied voltage (kV) Measured on ( Sl No of bushings) Measured value Factory value Difference (%) Current (mA) Dissipation Factor (tan delta) (%) 1 HV/LV (U)– 2 HV/LV (V)– 3 HV/LV (W)– 4 HV/LV (N)– Instrument Name, Make & Serial no Calibration due date TESTED WITNESSED APPROVED Signature: Signature: Signature: Name: Designation: Dept/Company: Name: Designation: Dept& section: Name: Designation: Dept& section: Contract No : Sub Station : TRANSFORMER SITE TEST REPORT Trafo ID Contractor Manufacturer Date of test Sl No DEWA MD(Trafo)/ST/18 Page of Contract No : Sub Station : TRANSFORMER SITE TEST REPORT Trafo ID Contractor Manufacturer Date of test Sl No COOLING EQUIPMENT A) OPERATION / CONTROLS CHECK MANUAL OPERATION DIRECTION OF FANS / PUMPS AUTO CONTROL FROM HV W T I AUTO CONTROL FROM LV W T I AUTO CONTROL FROM O T I CHECK INTERLOCKING OF COOLING FANS WITH FPS OPERATION UNDER VOLTAGE RELAY OPERATION AND ALARM CONTACT MAIN CONTROL MCB TRIP FAN CONTROL SWITCH TRIP PUMP / FAN ‘ON’ INDICATION PUMP / FAN FAILURE INDICATIONS OPERATION OF BUCHHOLZ RELAY WHEN SIMULTANEOUS SWITCHING OF PUMPS CHECK FOR STAGGERED STARTING OF COOLER FANS/PUMPS WIRING – CHECKS ( T B NO, FERRULES, GROUPING OF ALARM CONTACTS ETC AS PER DRAWINGS) GROUP – 1 (START) - 0 C GROUP – 1 ( STOP ) - 0 C GROUP – 2 (START) - 0 C GROUP – 2 ( STOP ) - 0 C Instrument Name, Make & Serial no Calibration due date TESTED WITNESSED APPROVED Signature: Signature: Signature: Name: Designation: Dept/Company: Name: Designation: Dept& section: Name: Designation: Dept& section: DEWA MD(Trafo)/ST/14 Page of Contract No : Sub Station : TRANSFORMER SITE TEST REPORT Trafo ID Contractor Manufacturer Date of test Sl No ON LOAD TAP CHANGER – OPERATION CHECKS Tap changer details Tap Changer Motor Make - Make - Type/Model - Motor Type - Sl No - Rating (KW) - MDU Type - Voltage - Year of Mfg - Rated current - SlNo Description of check Remarks 1 Local operation possible when selector s/w in local position 2 Remote operation not possible when selector s/w in local position 3 Emergency switch operation 4 Handle interlock 5 End limit switches in extreme taps 6 Step by step operation 7 Position indication in MDU 8 Position indication RCP 9 No of rotations for one step operation 10 Local operation is not possible when selector s/w in Remote position 11 Remote operation is possible when selector s/w in Remote position 12 Over travel in operation is within limits 13 Starting current of motor 14 Running current of motor 15 Phase discrepancy in operation (if separate poles for each phases) 16 Time for one tap changing – Normal tap 17 Time for one tap changing – run through tap (where applicable) 18 Contacts for all alarm/indication circuits 19 Over load tripping of motor (Setting of MPR) 20 IR value of motor and wiring with 500volts Megger 21 Lighting and heater controls (operation of door switch, thermostat etc) 22 23 24 25 Instrument Name, Make & Serial no Calibration due date TESTED WITNESSED APPROVED Signature: Signature: Signature: Name: Designation: Dept/Company: Name: Designation: Dept& section: Name: Designation: Dept& section: DEWA MD(Trafo)/ST/06 Page of Contract No : Sub Station : TRANSFORMER SITE TEST REPORT Trafo ID Contractor Manufacturer Date of test Sl No MAGNETIZING CURRENT MEASUREMENT HV Winding Measured exciting current (mA) Tap No Applied voltage U phase V phase W phase Remarks LV Winding Measured exciting current (mA) Applied voltage U phase V phase W phase Remarks Instrument Name, Make & Serial no Calibration due date TESTED WITNESSED APPROVED Signature: Signature: Signature: Name: Designation: Dept/Company: Name: Designation: Dept& section: Name: Designation: Dept& section: DEWA MD(Trafo)/ST/17 Page of Contract No : Sub Station : TRANSFORMER SITE TEST REPORT Trafo ID Contractor Manufacturer Date of test Sl No FAN MOTOR CHECK Make Rating KW/HP Type / Model Rated current FAN NO SERIAL NO CHECK for DIRECTION OF ROTATION STARTING CURRENT (A) U phase RUNNING CURRENT V phase (Amps) W phase OVER LOAD SETTING (Amps) TRIP OPERATION TIME (Sec) BLOCKED ROTOR CURRENT (Amps) O V E R L O A D D E V IC E ALARM CONTACT (OK/Not OK) IR VALUE AT 500 V (M Ohms) CHECK FAN RUNNING STARTS WHEN ONE PHASE IS DISCONNECTED – RUNNING / NOT RUNNING CHECK FOR HEATING AND LIGHTING CONTROLS (DOOR S/W, THERMOSTAT ETC) - Instrument Name, Make & Serial no Calibration due date TESTED WITNESSED APPROVED Signature: Signature: Signature: Name: Designation: Dept/Company: Name: Designation: Dept& section: Name: Designation: Dept& section: DEWA MD(Trafo)/ST/07 Page of Contract No : Sub Station : TRANSFORMER SITE TEST REPORT Trafo ID Contractor Manufacturer Date of test Sl No HV WINDING RESISTANCE MEASUREMENT (Temp ° C) Measured Resistance (Ohms) Tap No Applied current U - N V - N W - N Average Resistance corrected to 75°C ( R ) ∆R Factory value at 75°C Remarks Note : Graph plotted ( Tap no on x-axis and ∆R on y-axis) for all the three phases to be attached) (Temp °C) TAP No U – V (Ohms) V - W (Ohms) W – U (Ohms) Average (Ohms) LV WINDING RESISTANCE MEASUREMENT (Temp °C) TAP No u – v / u - n (Ohms) v – w / v - n (Ohms) w – u / w - n (Ohms) Average (Ohms) Factory value (Ohms) Instrument Name, Make & Serial no Calibration due date TESTED WITNESSED APPROVED Signature: Signature: Signature: Name: Designation: Dept/Company: Name: Designation: Dept& section: Name: Designation: Dept& section: DEWA MD(Trafo)/ST/01 Page of Contract No : Sub Station : TRANSFORMER SITE TEST REPORT Trafo ID Contractor Manufacturer Date of test Sl No INDEX SlNo Item Page No 1 Transformer general data 2 Final checks (To be carried out prior to energisation) 3 Insulation Resistance measurement of Transformer (Winding and core) 4 2kV test on core and clamping structure 5 Ratio and Vector group tests 6 Magnetizing current measurement 7 Winding Resistance measurement 8 Short circuit Impedance measurement 9 Measurement of Tan delta and Capacitance 10 Frequency Response analysis 11 Calibration of Temp Indicators 12 Gradient check of Winding Temperature indicators 13 Measurement of transducer for Remote Temp Indicator 14 Operation check of On load Tap changers 15 Tap position indication check 16 Insulation resistance check of devices 17 Fan motor check 18 Operation check of cooling equipments 19 Protective device wiring check 20 Checks on AVR 21 Tap changer and cooler alarms check 22 Parallel operation checks 23 Oil leak test 24 BDV test on insulating oil 25 Tests on insulating oil (oil characteristics) 26 Tests on transformer oil after complete processing 27 DGA test on insulating oil PREPARED CHECKED APPROVED Signature: Signature: Signature: Name: Designation: Dept/Company: Name: Designation: Dept& section: Name: Designation: Dept& section: DEWA MD(Trafo)/ST/04 Page of Contract No : Sub Station : TRANSFORMER SITE TEST REPORT Trafo ID Contractor Manufacturer Date of test Sl No INSULATION RESISTANCE MEASUREMENT & CORE INSULATION TEST INSULATION RESISTANCE - WINDING Measured at 5000 Volts Top Oil temperature - °C Measured between 15 Seconds (M Ohms) 60 Seconds (M Ohms) 600 Seconds (M Ohms) PI value (R600/R60) HV - LV and EARTH LV - HV and EARTH HV – LV Remarks:- CORE INSULATION TEST INSULATION RESISTANCE - Measured at 2000 volts Oil Temperature - °C Measured between Before 2kv Test (Mohms) After 2kv Test (Mohms) Remarks Core - Earth Clamps - Earth Core - clamps Remarks: - HV TEST(2kV Test) on Core insulation 1 Applied 2kV, AC, between core & clamps connected together and tank for one minute Leakage current - mA Result : Withstood / Failed 2 Applied 2kV, AC, between core and core clamps for one minute Leakage current - mA Result : Withstood / Failed Instrument Name, Make & Serial no Calibration due date TESTED WITNESSED APPROVED Signature: Signature: Signature: Name: Designation: Dept/Company: Name: Designation: Dept& section: Name: Designation: Dept& section: DEWA MD(Trafo)/ST/12 Page of Contract No : Sub Station : TRANSFORMER SITE TEST REPORT Trafo ID Contractor Manufacturer Date of test Sl No GRADIENT CHECK OF WINDING TEMPERATURE INDICATORS Indicator SlNo Bath Temp ( °C) Current injected (Amps) Indicator Reading (°C) Gradient (°C) Required gradient (°C) Remarks GRADIENT CHECK OF REMOTE WINDING TEMPERATURE INDICATORS Indicator SlNo Bath Temp (°C) RWTI output (mA) Current injected (Amps) Local WTI Reading (°C) Output (mA) Gradient (mA) Required gradient (mA) Remarks Instrument Name, Make & Serial No Calibration due date TESTED WITNESSED APPROVED Signature: Signature: Signature: Name: Designation: Dept/Company: Name: Designation: Dept& section: Name: Designation: Dept& section: DEWA MD(Trafo)/ST/13 Page of Contract No : Sub Station : TRANSFORMER SITE TEST REPORT Trafo ID Contractor Manufacturer Date of test Sl No TEMPERATURE TRANSDUCER OUTPUT MEASUREMENT DETAILS OF DEVICES ROTI : RWTI (HV) : RWTI (LV) : Device connected to DCS/SCADA - OTI WTI (HV) WTI (LV) Reading at Bath temp (°C) OTI reading Transducer output (mA) WTI reading Transducer output (mA) WTI reading Transducer output (mA) DCS SCADA Remarks 40 50 60 70 80 90 100 110 120 130 140 150 Instrument Name, Make & Serial No Calibration due date TESTED WITNESSED APPROVED Signature: Signature: Signature: Name: Designation: Dept/Company: Name: Designation: Dept& section: Name: Designation: Dept& section: DEWA MD(Trafo)/ST/08 Page of Contract No : Sub Station : TRANSFORMER SITE TEST REPORT Trafo ID Contractor Manufacturer Date of test Sl No SHORT CIRCUIT IMPEDANCE MEASUREMENT Measured voltage on HV (volts) Measured HV current (Amps) Impedance (%) at …… MVA base Tap No U - V V -W W -U U V W U V W Average Factory value Impedance (%) = *Rated current x Measured voltage x 100 *Rated voltage x Measured current (* At corresponding tap) Instrument Name, Make & Serial no Calibration due date TESTED WITNESSED APPROVED Signature: Signature: Signature: Name: Designation: Dept/Company: Name: Designation: Dept& section: Name: Designation: Dept& section: DEWA MD(Trafo)/ST/05 Page of Contract No : Sub Station : TRANSFORMER SITE TEST REPORT Trafo ID Contractor Manufacturer Date of test Sl No RATIO AND VECTOR GROUP TESTS HV volts LV volts Tap No U-N V-N W-N u-v/u-n v-w/v-n w-u/w-n Measured ratio (Average) Nominal ratio Error (%) Remarks Voltage continuity check during tap changing operations - OK / Not OK VECTOR GROUP CHECK Connected terminals ‘U& u’ of transformer together, Tap changer being on rated tap Applied 3-phase voltage on HV terminals Vector Diagram Measured voltages on U-V V - v V - w V-W W - w W - v W-V U - n N - n Remarks :- Instrument Name, Make & Serial no Calibration due date TESTED WITNESSED APPROVED Signature: Signature: Signature: Name: Designation: Dept/Company: Name: Designation: Dept& section: Name: Designation: Dept& section: DEWA MD(Trafo)/ST/19 Page of Contract No : Sub Station : TRANSFORMER SITE TEST REPORT Trafo ID Contractor Manufacturer Date of test Sl No PROTECTIVE DEVICES WIRING CHECK Sl No Description Initiated from Terminal No in MK Terminal No in LCC Terminal No in RCP/ RPs Remarks/ Results SCS/Scada Transformer Alarms 1 Buchholz Alarm 2 Oil temp high 3 Wind Temp high( HV) 4 Wind Temp high (LV) 5 Rubber bag fail 6 Oil level high (MT) 7 Oil level low (MT) 8 Oil level high (OLTC) 9 Oil level low (OLTC) Transformer Trips 1 Buchholz relay 2 Oil temp high 3 Wind Temp high 4 PRD (MT) 5 PRD (OLTC) 6 Surge Relay (OLTC) 7 Pressure relay OLTC 8 PRD cable box Buchholz Relay alarm contact operation check by N2 injection – Remarks: Instrument Name, Make & Serial no Calibration due date TESTED WITNESSED APPROVED Signature: Signature: Signature: Name: Designation: Dept/Company: Name: Designation: Dept& section: Name: Designation: Dept& section: DEWA MD(Trafo)/ST/24 Page of Contract No : Sub Station : TRANSFORMER SITE TEST REPORT Trafo ID Contractor Manufacturer Date of test Sl No BDV TEST ON INSULATING OIL : Sl No Test no Breakdown voltage (in kV) Remarks Sampling done from : 1 Test no: 1 2 Test no: 2 3 Test no: 3 4 Test no: 4 5 Test no: 5 6 Test no: 6 Average Sampling done from : 1 Test no: 1 2 Test no: 2 3 Test no: 3 4 Test no: 4 5 Test no: 5 6 Test no: 6 Average Sampling done from : 1 Test no: 1 2 Test no: 2 3 Test no: 3 4 Test no: 4 5 Test no: 5 6 Test no: 6 Average Instrument Name, Make & Serial no Calibration due date TESTED WITNESSED APPROVED Signature: Signature: Signature: Name: Designation: Dept/Company: Name: Designation: Dept& section: Name: Designation: Dept& section: DEWA MD(Trafo)/ST/22 Page of Page 1of 2 of MD(Trafo)/ST/22 Contract No : Sub Station : TRANSFORMER SITE TEST REPORT Trafo ID Contractor Manufacturer Date of test Sl No OLTC PARALLEL OPERATION CHECKS A PARALLEL MANUAL MODE RESULT / REMARKS MASTER/ FOLLOWER/ INDEPENDENT SWITCH SELECTIONS OLTC OPERATION Operated from SlNo MDU AVR TR - 1 TR - 2 TR - 3 TR – 1 TR – 2 TR – 3 AVR panel DCS SCADA 1 R H R M F F OPERATE AS MASTER OPERATE AS FOLLOWER OPERATE AS FOLLOWER 2 R H R F M F OPERATE AS FOLLOWER OPERATE AS MASTER OPERATE AS FOLLOWER 3 R H R F F M OPERATE AS FOLLOWER OPERATE AS FOLLOWER OPERATE AS MASTER 4 R H R M F I OPERATE AS MASTER OPERATE AS FOLLOWER OPERATE AS INDEPENDENT 5 R H R M I F OPERATE AS MASTER OPERATE AS INDEPENDENT OPERATE AS FOLLOWER 6 R H R I M F OPERATE AS INDEPENDENT OPERATE AS MASTER OPERATE AS FOLLOWER 7 R H R M M M NO OPERATION IS POSSIBLE 8 R H R F F F NO OPERATION IS POSSIBLE 9 R H R I I I OPERATE AS INDEPENDENT OPERATE AS INDEPENDENT OPERATE AS INDEPENDENT 10 R H R M I I OPERATE AS MASTER OPERATE AS INDEPENDENT OPERATE AS INDEPENDENT 11 R H R I M I OPERATE AS INDEPENDENT OPERATE AS MASTER OPERATE AS INDEPENDENT 12 R H R I I M OPERATE AS INDEPENDENT OPERATE AS INDEPENDENT OPERATE AS MASTER M – Master F – Follower I – Independent R – Remote A - Auto H – Hand (manual) Contd on Page 2of 2 of MD(Trafo)/ST/22 Instrument Name, Make & Serial no Calibration due date TESTED WITNESSED APPROVED Signature: Signature: Signature: Name: Designation: Dept/Company: Name: Designation: Dept& section: Name: Designation: Dept& section: DEWA MD(Trafo)/ST/20 Page of Contract No : Sub Station : TRANSFORMER SITE TEST REPORT Trafo ID Contractor Manufacturer Date of test Sl No AUTOMATIC VOLTAGE REGULATOR (AVR) CHECK Make: SlNo Control voltage: PT sec voltage: Band width setting: % ( volts) Under voltage blocking: % Over voltage blocking: % Check Points SlNo Status description Check point Result Remarks 1 Operation 11 No manual operation possible from MDU, SCC and AVR 12 AVR in ‘Auto’ mode Auto operations with the variations in PT sec voltage Tap Raise command when PT sec voltage reduced and vice versa 13 Auto operations not possible Manual operations possible from AVR 14 AVR in manual mode Manual operations possible from SCC 15 Operation possible from MDU 16 MDU in local position Operation not possible from AVR & SCC 17 Operation not possible from MDU&SCC 18 MDU & AVR in ‘remote’ position Operation possible from AVR 19 Operations not possible from MDU & AVR 110 MDU in remote & AVR in Supervisory Operation possible from SCC only 111 Under voltage blocking No operations possible 112 Over voltage blocking No operations possible 2 AVR Display 21 Voltage 22 Current 23 Tap No 24 Frequency 25 Master/Follower/Independent mode 26 Paragramar functions (Breaker status indication) 27 28 29 210 Instrument Name, Make & Serial no Calibration due date TESTED WITNESSED APPROVED Signature: Signature: Signature: Name: Designation: Dept/Company: Name: Designation: Dept& section: Name: Designation: Dept& section: DEWA MD(Trafo)/ST/21 Page of Contract No : Sub Station : TRANSFORMER SITE TEST REPORT Trafo ID Contractor Manufacturer Date of test Sl No TAP CHANGER & COOLER ALARMS & INDICATIONS CHECK SlNo Alarm description Initiated at DCS SCADA Remarks 1 ALARMS 11 TC out of step 12 TC incomplete 13 TC motor supply faulty 14 TC control supply faulty 15 AVR faulty 16 VT supply fail 17 Cooling equipment Faulty 18 IDT/ET – MK/MDU heating/lighting supply faulty 2 INDICATIONS 21 Tap Changer in ‘Remote’ 22 Tap Changer in ‘Supervisory’ 23 Tap Changer in ‘Auto’ 24 Tap Changer in ‘Manual’ 25 TC in progress 26 TC in ‘Independent’ mode 27 TC in ‘Master/follower’ mode 28 Tap position indications 29 Cooling fans running Instrument Name, Make & Serial no Calibration due date TESTED WITNESSED APPROVED Signature: Signature: Signature: Name: Designation: Dept/Company: Name: Designation: Dept& section: Name: Designation: Dept& section: DEWA MD(Trafo)/ST/28 Page of Contract No : Sub Station : TRANSFORMER SITE TEST REPORT Trafo ID Contractor Manufacturer Date of test Sl No Instrument Name, Make & Serial no Calibration due date TESTED WITNESSED APPROVED Signature: Signature: Signature: Name: Designation: Dept/Company: Name: Designation: Dept& section: Name: Designation: Dept& section: DEWA MD(Trafo)/ST/27 Page of Contract No : Sub Station : TRANSFORMER SITE TEST REPORT Trafo ID Contractor Manufacturer Date of test Sl No DGA TEST ON TRANSFORMER OIL Date of Sampling : Oil Temperature : Sampled by : Sampling Point : Sample identification : Tests carried out by : Test report reference : Test Results SlNo Dissolved gas Concentration (ppm) Remarks 1 Hydrogen (H2) 2 Methane (CH4) 3 Ethane (C2H6) 4 Ethylene (C2H4) 5 Acetylene (C2H2) 6 Carbon Monoxide (CO) 7 Carbon Dioxide (CO2) 8 Oxygen (O2) 9 Nitrogen (N2) 10 11 12 TDCG (ppm / %) 13 CO2 / CO Instrument Name, Make & Serial no Calibration due date TESTED WITNESSED APPROVED Signature: Signature: Signature: Name: Designation: Dept/Company: Name: Designation: Dept& section: Name: Designation: Dept& section: DEWA MD(Trafo)/ST/10 Page of FREQUENCY RESPONSE ANALYSIS Test report - Enclosed / Not enclosed Report No - Number of pages - Instrument Name, Make & Serial no Calibration due date TESTED WITNESSED APPROVED Signature: Signature: Signature: Name: Designation: Dept/Company: Name: Designation: Dept& section: Name: Designation: Dept& section: Contract No : Sub Station : TRANSFORMER SITE TEST REPORT Trafo ID Contractor Manufacturer Date of test Sl No DEWA