16. Guaranteed Technical Particulars
16.保证技术细节
Sr. No. | Particulars | Specified / Required | Offered |
1.0 | General | ||
1.1 | Make | ||
1.2 | Type | Cast resin, core type, outdoor, step down | |
1.3 | Full rating available for installation of the same transformer in indoor poorly ventilated condition | Yes | |
1.4 | IP Class | IP34, IP 44 on enquiry | |
1.5 | Fire Protection Class | F1 | |
1.6 | Environment Class | E2 | |
1.7 | Climate Class | C2 | |
2.0 | Nominal Continuous Rating, KVA | ||
2.1 | HV Winding | 250/400/630/1000/ 1500/2000/2500 | |
2.2 | LV Winding | 250/400/630/1000/ 1500/2000/2500 | |
3.0 | Rated Voltage (kV) | ||
3.1 | HV winding | 11 KV | |
3.2 | LV winding | 433 Volts | |
4.0 | Rated current (Amps ) | ||
4.1 | HV winding | As per capacity | |
4.2 | LV winding | As per capacity | |
5.0 | Connections | ||
5.1 | HV winding | Delta | |
5.2 | LV winding | Star with additional neutral | |
5.3 | Vector Group Reference | Dyn11 | |
6.0 | Impedance at principal tap rated current and frequency at 130 deg C | ||
6.1 | Impedance | 5/5/5/5/6/6/6 % | |
6.2 | Reactance |
6.3 | Resistance | ||
6.4 | Impedance at lowest tap rated current and frequency | ||
6.5 | Impedance at highest tap rated current and frequency, % | ||
7.0 | Resistance of the winding at 130 deg C ,at principal tap, ohm | ||
7.1 | a) HV | ||
7.2 | b) LV | ||
8.0 | Zero sequence impedance, ohm | ||
8.1 | a) HV | ||
8.2 | b) LV | ||
9.0 | Guaranteed maximum losses principal tap full load and 130°C without any positive tolerance kW | ||
9.1 | No load losses (max) | As per rating and req. | |
9.2 | Load Losses (max) | As per rating and req. | |
9.3 | Stray Losses | ||
10.0 | Temperature rise over reference design ambient | ||
10.1 | Winding by resistance 0 C | ||
10.2 | Maximum hot spot temperature, deg. C | ||
11.0 | Efficiency | ||
11.1 | Efficiency at 130 degC and unity power factor % | ||
11.1.1 | At 110% Load | ||
11.1.2 | At 100% Load | ||
11.1.3 | At 80% Load | Not less than 99.5 % | |
11.1.4 | At 60% Load | ||
11.1.5 | At 40% Load |
11.1.6 | At 20% Load | ||
11.2 | Efficiency at 130 degC and 0.8 power factor lag % | ||
11.2.1 | At 110% Load | ||
11.2.2 | At 100% Load | ||
11.2.3 | At 80% Load | Not Less than 99.5 % | |
11.2.4 | At 60% Load | ||
11.2.5 | At 40% Load | ||
11.2.6 | At 20% Load | ||
11.3 | Maximum efficiency at 130 deg C, % | ||
11.4 | Load and power factor at which it occurs | ||
12.0 | Regulation , (%) | ||
12.1 | Regulation at full load at 130 deg C | ||
12.1.1 | at unity power factor | ||
12.1.2 | at 0.8 power factor lagging | ||
12.2 | Regulation at 110% load at 130 deg C | ||
12.2.1 | at unity power factor | ||
12.2.2 | at 0.8 power factor lagging | ||
13.0 | Details of enclosure | ||
13.1 | Material | ||
13.2 | Thickness of sides mm | ||
13.3 | Thickness of bottom mm | ||
13.4 | Thickness of cover mm | ||
14 | Core | ||
14.1 | Type: | Core | |
14.2 | Core material grade | Premium grade minimum M4 or better | |
14.3 | Thickness of lamination mm | ||
14.4 | Insulation of Lamination | ||
14.5.1 | Design Flux Density at rated condition at principal tap, Tesla | 1.6 T |
14.5.2 | Maximum flux density at 10 % over excitation /over fluxing, Tesla | 1.76 Tesla maximum allowed | |
14.6 | Equivalent Cross Section Area in Sq mm | ||
14.7 | Guaranteed No Load current At 100% rated voltage , Amps | ||
14.7.1 | HV | ||
14.7.2 | LV | ||
14.8 | Guaranteed No Load current At 110% rated voltage, Amps | ||
14.8.1 | HV | ||
14.8.2 | LV | ||
15 | Type of Winding | ||
15.1 | HV | Layer/ Foil | |
15.2 | LV | Foil | |
15.3 | Winding size | ||
15.3.1 | HV Conductor / foil dimensions | ||
15.3.2 | LV Foil dimensions | ||
15.4 | Current density Amps/sqmm | ||
15.4.1 | HV Winding | 1.5 A per Sq.mm.(max.) | |
15.4.2 | LV Winding | 1.5 A per Sq.mm.(max.) | |
15.5 | Gauge/area of cross section of conductor, sqmm | ||
15.5.1 | HV | ||
15.5.2 | LV | ||
15.6 | Tappings | Yes | |
Tap link Material | |||
Stud Material | |||
Tightening torque | |||
15.7 | Tap link Current rating , A | As per rating and spec |
16 | Insulating Material | ||
16.1 | HV Turn | ||
16.2 | LV Turn | ||
16.3 | LV Core | ||
16.4 | HV - LV | ||
16.5 | HV Coil | Resin system Details to be provided | |
LV Coil | Impregnated / Casted / Prepreg | ||
17 | Insulating material thickness, mm | ||
17.1 | HV Turn | ||
17.2 | LV Turn | ||
17.3 | LV to Core | ||
17.4 | HV to LV | ||
18 | Minimum design clearance, mm | ||
18.1 | HV to earth in Air | ||
18.2 | LV to earth in Air | ||
18.3 | Between HV & LV in Air | ||
18.4 | Top winding and yoke | ||
18.5 | Bottom winding and yoke | ||
19 | Bushing / Support Insulator | ||
19.1 | Make | ||
19.2 | Type | ||
19.3 | Reference Standard | ||
19.4 | Voltage class, kV | ||
19.4.1 | HV side Bushing / Support insulator | ||
19.4.2 | LV side line and neutral bushing / Support insulator | ||
19.5 | Creepage factor for all bushing mm/KV | ||
19.6 | Weight, Kg | ||
9.6.1 | HV bushing / Support insulator | ||
19.6.2 | LV line and neutral bushing / Support insulator |
19.7 | Free space required for bushing / Support insulator removal, mm | ||
19.7.1 | HV bushing / Support insulator | ||
19.7.2 | LV line and neutral bushing /Support insulator | ||
20 | Terminal connections | ||
20.1 | HV | ||
20.2 | LV | ||
20.3 | Terminal Details | ||
20.3.1 | HV side busbar size | ||
203.2 | HV Termination suitable for cable size | ||
20.3.3 | HV Termination height, mm | ||
20.3.4 | HV side gland Plate dimension, mm x mm | ||
20.3.5 | HV side gland Plate material | ||
20.3.6 | HV side Gland Plate Thickness, mm | ||
20.3.7 | HV side Phase to clearance inside enclosure, mm | ||
20.3.8 | HV side Phase to earth inside box, mm | ||
20.3.9 | LV side busbar size | ||
20.3.10 | LV Termination suitable for cable size | ||
20.3.11 | LV Termination height, m | ||
20.3.12 | LV side gland Plate dimension, mm x mm | ||
20.3.13 | LV side gland Plate material | ||
20.3.14 | LV side Gland Plate Thickness, mm | ||
20.3.15 | LV side Phase to phase clearance inside enclosure, mm | ||
20.3.16 | LV side Phase to earth inside box, mm | ||
21 | Current Transformer on LV phases |
21.1 | Type | ||
21.2 | Make | ||
21.3 | Reference Standard | ||
21.4 | CT Ratio | ||
21.5 | Burden, VA | ||
21.6 | Class of Accuracy | ||
22 | CT terminal box size | ||
23 | WT scanner terminal box size | ||
24 | Alarm and Trip contact ratings of protective devices | ||
24.1 | Rated / making/ breaking currents, Amp @ Voltage for | ||
24.1.1 | Winding temperature scanner | ||
25 | Fittings and Accessories as per Cl. 6.0 provided (YES / NO) | ||
26 | Painting as per clause 4.13 provided (Yes/No) | ||
27 | Overall transformer dimensions | ||
27.1 | Length, mm | ||
27.2 | Width, mm | ||
27.3 | Height, mm | ||
28 | Weight data | ||
28.1 | Core, kG | ||
28.2 | Frame parts, kG | ||
28.3 | Core and frame, kG | ||
28.4. | Total Winding, kG | ||
28.4.1 | HV Windling (kg) | ||
28.4.2 | LV Winding (kg) | ||
28.5 | Core , Frame, Winding, kG | ||
28.6 | Enclosure, kG | ||
28.7 | Total Transport weight of the transformer, kG | ||
28.8 | Total weight of the transformer |
with all accessories | |||
29 | Shipping Data | ||
29.1 | Weight of heaviest package, kG | ||
29.2 | Dimensions of the largest package (L x B x H) mm | ||
30 | Surge Arrestor requirement | ||
30.1 | Type | ||
30.2 | System Voltage , kV rms | ||
30.3 | Rated Voltage of Arrestor, kV rms | ||
30.4 | Continuous operating voltage ,kV rms | ||
30.5 | Maximum Continuous operating voltage, kV rms | ||
30.6 | Nominal Discharge Current, kA peak | ||
30.7 | Energy Absorption Capability, kJ/kV | ||
30.8 | Creepage factor | ||
30.9 | Reference std | ||
31 | WTI Scanner Details | ||
31.1 | Make | ||
31.2 | Model no. | ||
31.3 | Manual submitted | ||
32 | Tests (As per Cl 10.0 of the spec) | ||
32.1 | All in process tests confirmed (Yes/ No) | ||
32.2 | All Type Tests confirmed (Yes /No) | ||
32.3 | All Routine Tests confirmed (Yes/ No) | ||
32.4 | All Special Tests confirmed (Yes/ No) | ||
33 | Guarantee Period |