Three-phase integrated current transformer for CGIS inflatable switchgear, multiple accuracy grades and wide primary current range available; secondary lead specifications and stacked product height support customized production.
Suitable for 35kV CGIS inflatable switchgear applications requiring three-phase integrated current measurement with customizable secondary leads.
| Parameter | Specification | Verification |
|---|---|---|
| Product Type | Current Transformer | [On Request] |
| Model Code | CGIS1021S | Factory nameplate marking |
| Primary Voltage | 35kV | Rated voltage test (IEC 61869-1/3) |
| Secondary Voltage | [On Request] | Ratio check at rated frequency |
| Accuracy Class | [On Request] | Accuracy test (IEC 61869-2 / IEEE C57.13) |
| Rated Burden | [On Request] | Burden test at rated VA |
| Insulation Type | Dry Epoxy Resin | Dielectric tests per standard |
| Insulation Level (BIL) | [On Request] | Power-frequency & lightning impulse withstand |
| Standards | [On Request] | Certified to listed standards |
| Frequency | 50/60Hz | Per IEC 61869-1 |
| Environment | [On Request] | Per datasheet limits |
Ideal For
Not Recommended For
Connect secondary terminals 1S1/1S2 for main protection winding, and 2S1-2S2 for additional winding if present. Never open-circuit the secondary of a CT while energized - hazardous voltage. Ground the secondary circuit at one point only. Ensure proper shorting before disconnecting load.
Compliant with: [On Request]
S_total = ΣS_instrument + I₂² × (ρ × 2L / A)
Q: What is the primary voltage rating?
A: The primary voltage is 35kV.
Q: What insulation type is used?
A: Dry epoxy resin insulation.
Q: Can the secondary leads be customized?
A: Yes, secondary lead specifications are customizable.
Missing fields are marked [On Request] — never fabricated. M2/M5/M6 verification rows follow IEC 61869 / IEEE C57.13 conventions.
| Accuracy classCombined | Rated primary current (A) | 200 | 300 | 400 | 500 | 600 | 700 | 800 |
|---|---|---|---|---|---|---|---|---|
| 0.2/5P10 | 2.5 | 30 | 40 | 50 | 60 | 70 | 80 | — |
| 5 | 60 | 70 | 80 | 90 | 100 | 110 | — | |
| 10 | 85 | 90 | 100 | 110 | 120 | 130 | — | |
| 15 | 105 | 110 | 120 | 130 | 140 | 150 | — | |
| 20 | 120 | 130 | 140 | 150 | 160 | 170 | — | |
| 25 | 135 | 150 | 160 | 170 | 180 | 190 | — | |
| 0.5/5P10 | 2.5 | 30 | 40 | 50 | 60 | 70 | 80 | — |
| 5 | 60 | 70 | 80 | 90 | 100 | 110 | — | |
| 10 | 85 | 90 | 100 | 110 | 120 | 130 | — | |
| 15 | 105 | 110 | 120 | 130 | 140 | 150 | — | |
| 20 | 120 | 130 | 140 | 150 | 160 | 170 | — | |
| 25 | 135 | 150 | 160 | 170 | 180 | 190 | — | |
| 5P10/5P10 | 2.5 | 30 | 40 | 50 | 60 | 70 | 80 | — |
| 5 | 60 | 70 | 80 | 90 | 100 | 110 | — | |
| 10 | 85 | 90 | 100 | 110 | 120 | 130 | — | |
| 15 | 105 | 110 | 120 | 130 | 140 | 150 | — | |
| 20 | 120 | 130 | 140 | 150 | 160 | 170 | — | |
| 25 | 135 | 150 | 160 | 170 | 180 | 190 | — | |
| 5P15/5P15 | 2.5 | 40 | 50 | 60 | 70 | 80 | 90 | — |
| 5 | 80 | 90 | 100 | 110 | 120 | 130 | — | |
| 10 | 110 | 120 | 130 | 140 | 150 | 160 | — | |
| 15 | 135 | 150 | 160 | 170 | 180 | 190 | — | |
| 20 | 160 | 170 | 180 | 190 | 200 | 210 | — | |
| 25 | 180 | 190 | 200 | 210 | 220 | 230 | — | |
| 5P20/5P20 | 2.5 | 50 | 60 | 70 | 80 | 90 | 100 | — |
| 5 | 100 | 110 | 120 | 130 | 140 | 150 | — | |
| 10 | 140 | 150 | 160 | 170 | 180 | 190 | — | |
| 15 | 170 | 180 | 190 | 200 | 210 | 220 | — | |
| 20 | 200 | 210 | 220 | 230 | 240 | 250 | — | |
| 25 | 220 | 230 | 240 | 250 | 260 | 270 | — |
Dimension & outline drawing of CGIS1021S — click image to zoom / view original.
