| Item |
240-56062765 |
Description |
Schedule A |
Schedule B |
| Sub clause |
| |
3 |
General requirements |
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| 1 |
3.2 |
Service conditions (if non-standard) |
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a) ambient air temperature (average) °C |
-10 to +40 |
-10 to +40 |
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b) altitude m |
1800 |
1800 |
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c) average humidity % |
95 |
95 |
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d) wind pressure Pa |
700 |
700 |
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e) level of pollution: Extra heavy - creepage distance mm mm |
Extra heavy |
Extra heavy |
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arcing distances mm |
Extra heavy |
Extra heavy |
| 2 |
4 |
Ratings |
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a) indoor or outdoor use |
Outdoor |
Outdoor |
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b) nominal r.m.s system voltage(Un) kV |
110 |
110 |
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c) maximum r.m.s system voltage(Um) kV |
123 |
123 |
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d) number of phases |
3 |
3 |
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e) frequency Hz |
50 |
50 |
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f) method of earthing: effective or non-effective |
effective |
effective |
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g) single-phase or 3-phase voltage transformer? |
single-phase |
single-phase |
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h) Short-time power frequency withstand level kV |
275 |
230 |
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i) lightning impulse withstand level (LIWL) kV |
650 |
550 |
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| 3 |
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Manufacturing details |
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a) manufacturer |
xxxxxxxx |
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b) manufacturer's type designation |
xxxxxxxx |
JDCF-110W3 |
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| 4 |
5.5 |
Requirements for external insulation |
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Manufacturer of HV porcelain insulators |
xxxxxxxx |
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Manufacturer of HV composite insulators |
xxxxxxxx |
NA |
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10.1.3 |
Detailed drawing of insulator |
Yes |
Yes |
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Compliance with Specification: IEC 60815. |
Yes |
Yes |
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Insulation medium (gas,oil,resin) |
Oil |
Oil |
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| 5 |
5.1 |
Details of oil-paper insulated voltage
transformers |
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Type of oil |
xxxxxxxx |
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Oil to be certified to contain no PCBs (zero count) |
Yes |
Yes |
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Quantity of oil required litres |
xxxxxxxx |
175kg |
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Expansion accommodation method |
xxxxxxxx |
Bellows |
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Details of sealing arrangements |
xxxxxxxx |
Attach drawing |
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Oil-level indicators |
Yes |
Yes |
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Oil sample valve required? |
No |
No |
| 6 |
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Design details |
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Voltage factor |
minimum 1.9 |
1.2continuous |
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Time for voltage factor s |
minimum 8Hrs |
1.5,30s |
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Primary voltage kV |
110 |
110 |
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Secondary voltage V |
110/Ö3 |
110/Ö3 |
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Measuring or protection application: |
both |
both |
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Rated burden per phase |
100 |
NA |
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1. Rated burden per phase: Distribution unit (Table 1) VA |
100 |
50/50 |
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4.7.3 |
Accuracy class |
table on pg 1 |
table on pg 1 |
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HV neutral to be earthed? |
Yes |
Yes |
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Is a power winding required? |
No |
No |
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Short-circuit protection |
Yes |
Yes |
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Are primary fuses required? |
No |
No |
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Protection of secondary winding required |
Yes |
Yes |
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a) by means of fuses/MCB's? |
xxxxxxxx |
MCB |
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b) current rating A |
xxxxxxxx |
16 |
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c) make and type of protection |
xxxxxxxx |
MCB |
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d) white phase or neutral to be earthed |
Neutral |
Neutral |
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Short-circuit currents |
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a) calculated secondary short-circuit current A |
xxxxxxxx |
900 |
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b) maximum permissible duration of secondary short-circuit curr s |
1 |
1 |
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c) operating time for secondary short-circuit s |
xxxxxxxx |
1 |
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d) calculated primary current for a secondary short-circuit assuming zero source impedance A |
xxxxxxxx |
0.75 |
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e) drawing showing method of mounting secondary fuses/MCB's |
xxxxxxxx |
Attach drawing |
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Number of core limbs: |
xxxxxxxx |
2 |
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| 7 |
6 |
Constructional requirements |
xxxxxxxx |
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Windings and connections |
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Is a residual voltage winding required? |
No |
No |
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Are tapped windings for providing both rated secondary residual voltages required? |
No |
No |
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Details of primary winding neutral (earth) terminal |
Yes |
Yes |
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| 8 |
6.3 |
Secondary terminal box |
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Number of fuses/MCB's |
xxxxxxxx |
2 |
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Manufacturer of fuses/MCB's |
xxxxxxxx |
TBA |
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Type of fuses/MCB's |
xxxxxxxx |
16A |
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Current rating of fuses/MCB's A |
xxxxxxxx |
16 |
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MCB Characteristic curve (Curve C) |
xxxxxxxx |
Yes |
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If MCB is used change-over auxiliary contact required |
Yes |
Yes |
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HV winding earth end to be brought out, with link to earth terminal |
Yes |
Yes |
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Dimension of terminal box: |
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a) length mm |
xxxxxxxx |
298 |
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b) height mm |
xxxxxxxx |
230 |
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c) depth mm |
xxxxxxxx |
208 |
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Minimum effective gland area of secondary terminal box/gland plate; length x width mm |
75 x 50 |
75 x 50 |
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Bolted link or removable link? |
removable |
Bolted link |
| |
6.2 |
Secondary terminals (Stud Type size M6) |
Yes |
Phoenix terminal |
| 9 |
6.6 |
Mounting arrangement |
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Outline drawing |
Yes |
Yes |
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Holding down bolts to be arranged to fall within a square of maximum dimensions mm |
706 |
706 |
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| 10 |
6.7 |
Metal finish |
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Is metal spraying of ferrous parts acceptable? |
Yes |
Yes |
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Finish offered on ferrous parts |
xxxxxxxx |
+ |
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Finish offered on non-ferrous parts |
xxxxxxxx |
NA |
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| 11 |
6.1 |
Primary terminals |
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1. Materials: |
xxxxxxxx |
Aluminium |
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2. Type of primary terminal |
Stem |
Stem |
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Dimensions and orientation of stem: |
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a) diameter mm |
26 |
26 |
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b) minimum length mm |
125 |
125 |
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c) orientation |
Vertical |
Horizontal |
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Details of earthing terminal suitable for 50x3mm strap |
xxxxxxxx |
Yes |
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| 12 |
6.9 |
Rating plates and diagram plates |
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a) materials used for rating plates |
xxxxxxxx |
Stainless steel |
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b) material used for diagram plates |
xxxxxxxx |
In rating plate |
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c) method of fixing diagram plates and rating plates |
xxxxxxxx |
Fastening screw |
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| 13 |
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Cores |
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Core steel details |
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a) grade |
xxxxxxxx |
35Q |
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b) thickness of lamina mm |
xxxxxxxx |
0.35 |
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a) annealed? |
xxxxxxxx |
Yes |
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b) B/H curve to be supplied |
Yes |
Yes |
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| 14 |
5.4 & 5.5 |
Drawings and instruction manuals |
|
|
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Quantity of drawings and literature required with tender |
1 |
1 |
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Information in electronic format (PDF etc) |
Yes |
Yes |
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Mass of complete transformer kg |
xxxxxxxx |
735 |
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Number of instruction books and descriptive pamphlets per order |
3 |
3 |
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Drawing numbers for post-type voltage transformers: |
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a) outline dimension |
xxxxxxxx |
Yes |
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b) assembly |
xxxxxxxx |
Yes |
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c) terminal box |
xxxxxxxx |
Yes |
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d) terminal marking |
xxxxxxxx |
Yes |
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e) rating plate |
xxxxxxxx |
Yes |
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f) diagram plate |
xxxxxxxx |
Yes |
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7.5 |
Test certificates of individual routine tests |
Yes |
Yes |
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are required and shall be placed in the |
|
Yes |
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terminal box |
|
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| 15 |
4.10 |
Spare fuses |
|
|
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Secondary fuses: One spare in terminal box |
Yes |
Yes |
| |
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| 16 |
7.2 |
Type tests |
|
|
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Temperature Rise Test |
Yes |
Yes |
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Lightning impulse test of primary terminals |
Yes |
Yes |
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Wet Test for Outdoor Transformers |
Yes |
Yes |
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|
Measument of RIV |
Yes |
Yes |
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Determination of Errors (Accuracy Test) |
Yes |
Yes |
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Short circuit withstand capability test |
Yes |
Yes |
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Verification of degree of protection by enclosure |
Yes |
Yes |
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| 17 |
7.4 |
Special tests |
|
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Chopped impulse voltage withstand test on primary windings |
Yes |
Yes |
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Mechanical tests |
Yes |
Yes |
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Transmitted overvoltage test |
Yes |
Yes |
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Internal arc fault test |
Yes |
NO |
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Corrosion test |
Yes |
NO |
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