SITE TEST REPORT AYT ELECTRICAL LLC
Equipment – Location
Customer – Project –
Main Contractor –
DATE:
AUTO TRANSFORMER TEST REPORT
NAME PLATE DETAILS :
LOCATION :
NOMINAL POWER :
NOMINAL VOLTAGE HV :
NOMINAL VOLTAGE IV :
NOMINAL VOLTAGE LV :
NOMINAL CURRENT HV :
NOMINAL CURRENT IV :
NOMINAL CURRENT LV :
IMPEDANCE VOLTAGE :
VECTOR GROUP :
TYPE OF COOLING :
MAKE :
SL.NO :
INSULATION RESISTANCE TEST(G Ω):
INSULATION PI VALUES
APPLIED
REF RESISTANCE IN G Ω
VOLTAGE
15 s 60 s 10min RATIO (600/60)
HV + IV - EARTH
LV – EARTH
HV + IV - LV
Test Conducted By Witnessed by Witnessed by
AYT Electrical LLC
Name
Designation TESTING ENGINEER
Signature
SITE TEST REPORT AYT ELECTRICAL LLC
Equipment – Location
Customer – Project –
Main Contractor –
MAGNETIC CURRENT HV Side
Tap No ;
Phase : 3Φ
1U1V 1V1W 1W1U 1U 1V 1W
MAGNETIC CURRENT HV Side
Phase : 1Φ
1U1N 1V1N 1W1N 1U 1V 1W
MAGNETIC CURRENT LV Side
Tap No ;
Phase : 3Φ
1U1V 1V1W 1W1U 1U 1V 1W
MAGNETIC BALANCE :
APP.
1U1N 1V1N 1W1N 2U1N 2V1N 2W1N 3U3W 3V3U 3W3V
VOL
1U1N
1V1N
1W1N
Test Conducted By Witnessed by Witnessed by
AYT Electrical LLC
Name
Designation TESTING ENGINEER
Signature
SITE TEST REPORT AYT ELECTRICAL LLC
Equipment – Location
Customer – Project –
Main Contractor –
VECTOR GROUP –
1U1V =
1V1W =
1W1U =
1U
1V
1W 1V
RATIO TEST :
Test Conducted By Witnessed by Witnessed by
AYT Electrical LLC
Name
Designation TESTING ENGINEER
Signature
SITE TEST REPORT AYT ELECTRICAL LLC
Equipment – Location
Customer – Project –
Main Contractor –
Winding Combination : HV/ IV
Test Conducted By Witnessed by Witnessed by
AYT Electrical LLC
Name
Designation TESTING ENGINEER
Signature
SITE TEST REPORT AYT ELECTRICAL LLC
Equipment – Location
Customer – Project –
Main Contractor –
Measured Voltage Ratio
No Load Terminals
Tap Voltage 1U – 1N 1V – 1N 1W – 1N
Ratio 2U – 1N 2V – 1N 2W -1N
Ratio %Error Ratio %Error Ratio %Error
1
2
3
4
5
6
7
8
9b
10
11
12
13
14
15
16
17
WINDING RESISTANCE TEST:
Primary(HV) Winding resistance (Ω):
Test Conducted By Witnessed by Witnessed by
AYT Electrical LLC
Name
Designation TESTING ENGINEER
Signature
SITE TEST REPORT AYT ELECTRICAL LLC
Equipment – Location
Customer – Project –
Main Contractor –
Tap No 1U1N 1V1N 1W1N
1
2
3
4
5
6
7
8
9b
10
11
12
13
14
15
16
17
CAPACITANCE AND DISSIPATION FACTOR TEST:
kV Bushing
U Phase
Test Conducted By Witnessed by Witnessed by
AYT Electrical LLC
Name
Designation TESTING ENGINEER
Signature
SITE TEST REPORT AYT ELECTRICAL LLC
Equipment – Location
Customer – Project –
Main Contractor –
Sr.No :
Mode used: UST
Applied voltage Capacitance Dissipation factor
2kV
5kV
10kV
V Phase
Sr.No :
Applied voltage Capacitance Dissipation factor
2kV
5kV
10kV
W Phase
Sr.No :
Applied voltage Capacitance Dissipation factor
2kV
5kV
10kV
KV Bushing
U Phase
Sr.No :
Applied voltage Capacitance Dissipation factor
2kV
5kV
10kV
Test Conducted By Witnessed by Witnessed by
AYT Electrical LLC
Name
Designation TESTING ENGINEER
Signature
SITE TEST REPORT AYT ELECTRICAL LLC
Equipment – Location
Customer – Project –
Main Contractor –
V Phase
Sr.No :
Applied voltage Capacitance Dissipation factor
2kV
5kV
10kV
W Phase
Sr.No :
Applied voltage Capacitance Dissipation factor
2kV
5kV
10kV
HV – EARTH
Mode Used : GST
Applied voltage Capacitance Dissipation factor
2kV
5kV
10kV
Test Conducted By Witnessed by Witnessed by
AYT Electrical LLC
Name
Designation TESTING ENGINEER
Signature
SITE TEST REPORT AYT ELECTRICAL LLC
Equipment – Location
Customer – Project –
Main Contractor –
HV – LV
Mode used : UST
Applied voltage Capacitance Dissipation factor
2kV
5kV
10kV
LV – EARTH
Mode used : GST
Applied voltage Capacitance Dissipation factor
2kV
5kV
10kV
Test Conducted By Witnessed by Witnessed by
AYT Electrical LLC
Name
Designation TESTING ENGINEER
Signature
