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245KV CURRENT TRANSFORMER | |||
1 | Manufacture/ Country of Origin | ABB LTD/INDIA | |
2 | Ordering number | IMB245 | |
I | Substantial requirements | ||
1 | Applicable standard | IEC 60044-1 | |
2 | Type | Outdoor, oil immersed, porcelain | |
3 | Rated voltage | kV | 245 |
4 | Rated frequency | Hz | 50 |
5 | Impulse Voltage (1.2/50ms) withstand | kV | 1050 |
6 | Power Frequency Voltage withstand | ||
- Primary windings | kV | 460 | |
- Secondary windings | kV(rms) | 3 | |
7 | Rated Primary Current | A | 1200 |
8 | Extended Current Rating | A | 120% of rated primary current |
9 | Rated Transformation Ratios | A | 400-800-1200/1A |
10 | Rated Thermal withstand Current | kArms. | 40 |
11 | Rated duration of short-circuits | s | 3 |
12 | Rated Dynamic Withstand Current | kA peak | 100 |
13 | Maximum Partial Discharge Level | ||
- Un | pC | < 10 | |
-1,2Un / Ö3 | pC | < 5 | |
14 | Dielectric dissipation factor (tan d) | ||
-at Un / Ö3 | < 0.005 | ||
15 | Core Characteristics : Ratio, Rated Burden, Accuracy Class | ||
-Core No. 1 |
400-800-1200/1A 15VA - Cl 0.5 |
||
-Core No. 2 |
400-800-1200/1A 15VA - 5P20 |
||
-Core No. 3 |
400-800-1200/1A 15VA - 5P20 |
||
-Core No. 4 |
400-800-1200/1A 15VA - 5P20 |
||
-Core No. 5 |
400-800-1200/1A 15VA - 5P20 |
||
16 | All burdens, accuracy Classes at all ratios | Yes/No | Yes |
17 | Minimum creepage distance | mm/kV | 25 |
II | Non-substantial requirements | ||
1 | Materials of terminals | ||
- HV | 2xCopper(silver plated; 30mm dia x 80mm length(double round terminal) | ||
III | Requirements for information | ||
1 | Maximum Partial Discharge Level at 1.1 Un (highest system voltage) | < 10 | |
2 | Secondary Winding Resistance | Ohm | As per design burden |
3 | Radio interference voltage measurement (RIV) | m V | < 2500 |
4 | Calculated Wind Load Moment about Base | N | 2.8kN |
5 | Total Weight | Kg | 1700 Kg approx |
123KV CURRENT TRANSFORMER | |||
1 | Manufacture/ Country of Origin | ABB LTD/INDIA | |
2 | Ordering number | IMB145 | |
I | Substantial requirements | ||
1 | Applicable standard | IEC 60044-1 | |
2 | Type | Outdoor, oil immersed, porcelain | |
3 | Rated voltage | kV | 123 |
4 | Rated frequency | Hz | 50 |
5 | Impulse Voltage (1.2/50ms) withstand | kV | 550 |
6 | Power Frequency Voltage withstand | ||
- Primary windings | kV | 230 | |
- Secondary windings | kV(rms) | 3 | |
7 | Rated Primary Current | ||
Type 1 | A | 2000 | |
Type 2 | A | 1200 | |
8 | Extended Current Rating | A | 120% of rated primary current |
9 | Rated Transformation Ratios | ||
Type 1 | A | 1000-2000/1A | |
Type 2 | A | 400-800-1200/1A | |
10 | Rated Thermal withstand Current | kArms. | 31,5 |
11 | Rated duration of short-circuits | s | 3 |
12 | Rated Dynamic Withstand Current | kA peak | 80 |
13 | Maximum Partial Discharge Level | ||
- Un | pC | < 10 | |
-1,2Un / Ö3 | pC | < 5 | |
14 | Dielectric dissipation factor (tan d) | ||
-at Un / Ö3 | < 0.005 | ||
15 | Core Characteristics : Ratio, Rated Burden, Accuracy Class | ||
Type 1: | |||
-Core No. 1 |
1000-2000/1A 15VA - Cl 0.2 |
||
-Core No. 2 |
1000-2000/1A 15VA - Cl 0.5 |
||
-Core No. 3 |
1000-2000/1A 15VA - 5P20 |
||
-Core No. 4 |
1000-2000/1A 15VA - 5P20 |
||
-Core No. 5 |
1000-2000/1A 15VA - 5P20 |
||
Type 2: | |||
-Core No. 1 |
400-800-1200/1A 15VA - Cl 0.5 |
||
-Core No. 2 |
400-800-1200/1A 15VA - Cl 0.5 |
||
-Core No. 3 |
400-800-1200/1A 15VA - 5P20 |
||
-Core No. 4 |
400-800-1200/1A 15VA - 5P20 |
||
-Core No. 5 |
400-800-1200/1A 15VA - 5P20 |
||
16 | All burdens, accuracy Classes at all ratios | Yes/No | Yes |
17 | Minimum creepage distance | mm/kV | 25 |
II | Non-substantial requirements | ||
1 | Materials of terminals | ||
- HV | For 1000-2000/1A ratio:-4xCopper(silver plated; 30mm dia x 80mm length(four round terminal) For 400-800-1200/1A ratio:-2xCopper(silver plated; 30mm dia x 80mm length(double round terminal) | ||
- Earth | Earthing provision will be provided.Earthing clamps not in ABB India scope. | ||
III | Requirements for information | ||
1 | Maximum Partial Discharge Level at 1.1 Un (highest system voltage) | < 10 | |
2 | Secondary Winding Resistance | Ohm | As per design burden |
3 | Radio interference voltage measurement (RIV) | m V | < 2500 |
4 | Calculated Wind Load Moment about Base | N | 2.8kN |
5 | Total Weight | Kg | 650 kg approx |
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