Indoor epoxy resin casting current transformer designed for CGIS gas insulated switchgear, with multiple accuracy class, rated burden and primary current options.
Indoor epoxy resin casting current transformer for CGIS gas insulated switchgear, rated 20kV, available in multiple accuracy classes and burdens.
| Parameter | Specification | Verification |
|---|---|---|
| Product Type | Current Transformer | [On Request] |
| Model Code | CGIS1555 | Factory nameplate marking |
| Primary Voltage | 20kV | Rated voltage test (IEC 61869-1/3) |
| Secondary Voltage | [On Request] | Ratio check at rated frequency |
| Accuracy Class | 0.2/6P(3P),0.5/6P(3P),1.0/6P(3P) | Accuracy test (IEC 61869-2 / IEEE C57.13) |
| Rated Burden | 30VA / 60VA / 100VA / 100VA | Burden test at rated VA |
| Insulation Type | Dry Epoxy Resin | Dielectric tests per standard |
| Insulation Level (BIL) | 24/65/125kV,18/55/105kV | Power-frequency & lightning impulse withstand |
| Standards | [On Request] | Certified to listed standards |
| Frequency | 50Hz or 60Hz | Per IEC 61869-1 |
| Environment | [On Request] | Per datasheet limits |
Ideal For
Not Recommended For
For current transformers, secondary terminals are 1S1/1S2 for the main winding and 2S1/2S2 for the protection winding. Never open-circuit the secondary of a CT while energized - hazardous voltage. Ground the secondary winding at one point.
Compliant with: [On Request]
S_total = ΣS_instrument + I₂² × (ρ × 2L / A)
Q: What is the insulation level of this CT?
A: The insulation level is 24/65/125kV, meaning 24kV system, power-frequency withstand 65kV, lightning impulse withstand 125kV peak. Also available as 18/55/105kV.
Q: What are the available accuracy classes?
A: Accuracy classes are 0.2/6P(3P), 0.5/6P(3P), and 1.0/6P(3P), suitable for metering and protection.
Q: What is the rated burden?
A: Rated burden options are 30VA, 60VA, and 100VA (two windings at 100VA).
Missing fields are marked [On Request] — never fabricated. M2/M5/M6 verification rows follow IEC 61869 / IEEE C57.13 conventions.
| Accuracy class | Rated output (VA) | 40 | 50 | 60 | 75 | 100 | 125 | 150 | 200 | 250 | 300 | 400 | 500 | 600 | 750 | 1000 | 1200 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0.2FS10 | 2.5 | — | — | — | — | 85 | 60 | 50 | 35 | 30 | 30 | 30 | 30 | 30 | 35 | 35 | 35 |
| 5 | — | — | — | — | 130 | 90 | 70 | 50 | 40 | 35 | 30 | 30 | 30 | 35 | 35 | 35 | |
| 10 | — | — | — | — | 150 | 115 | 75 | 55 | 45 | 35 | 35 | 30 | 30 | 35 | 35 | 35 | |
| 15 | — | — | — | — | — | 160 | 100 | 70 | 55 | 45 | 40 | 35 | 35 | 35 | 35 | 35 | |
| 20 | — | — | — | — | — | — | 125 | 85 | 65 | 55 | 45 | 40 | 40 | 35 | 35 | 35 | |
| 25 | — | — | — | — | — | — | — | 150 | 105 | 75 | 60 | 50 | 45 | 45 | 40 | 35 | |
| 30 | — | — | — | — | — | — | — | — | 120 | 85 | 70 | 55 | 50 | 45 | 40 | 40 | |
| 0.5FS10 | 2.5 | — | 115 | 80 | 50 | 40 | 35 | 30 | 30 | 30 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
| 5 | — | — | 130 | 75 | 60 | 45 | 35 | 30 | 30 | 30 | 25 | 25 | 25 | 25 | 25 | 25 | |
| 10 | — | — | — | 120 | 90 | 70 | 50 | 40 | 35 | 30 | 25 | 25 | 25 | 25 | 25 | 25 | |
| 15 | — | — | — | — | 120 | 90 | 65 | 55 | 40 | 35 | 30 | 25 | 25 | 25 | 25 | 25 | |
| 20 | — | — | — | — | 155 | 115 | 80 | 65 | 55 | 50 | 40 | 35 | 30 | 25 | 25 | 25 | |
| 25 | — | — | — | — | — | 140 | 90 | 75 | 65 | 55 | 45 | 35 | 30 | 25 | 25 | 25 | |
| 30 | — | — | — | — | — | — | 105 | 85 | 70 | 65 | 50 | 40 | 35 | 30 | 25 | 25 | |
| 5P10 | 2.5 | 135 | 100 | 85 | 75 | 55 | 40 | 35 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 25 | 25 |
| 10P10 | 5 | — | 135 | 120 | 85 | 70 | 55 | 50 | 45 | 40 | 35 | 30 | 35 | 30 | 30 | 30 | 30 |
| 10 | — | — | — | 145 | 110 | 95 | 80 | 70 | 60 | 50 | 45 | 45 | 35 | 35 | 35 | — | |
| 15 | — | — | — | — | 155 | 130 | 110 | 90 | 80 | 80 | 65 | 60 | 50 | 45 | 45 | 45 | |
| 20 | — | — | — | — | — | 140 | 115 | 100 | 95 | 80 | 70 | 60 | 55 | 45 | 45 | 45 | |
| 25 | — | — | — | — | — | — | 140 | 120 | 115 | 95 | 80 | 70 | 60 | 55 | 55 | 55 | |
| 30 | — | — | — | — | — | — | — | — | 140 | 130 | 110 | 95 | 80 | 65 | 60 | 60 | |
| 5P20 | 2.5 | — | 145 | 125 | 90 | 75 | 65 | 60 | 50 | 50 | 50 | 45 | 40 | 40 | 35 | 35 | 35 |
| 10P20 | 5 | — | — | 145 | 115 | 95 | 90 | 75 | 70 | 65 | 55 | 50 | 50 | 50 | 45 | 40 | — |
| 10 | — | — | — | — | 160 | 125 | 110 | 105 | 85 | 75 | 70 | 65 | 60 | 55 | 50 | — | |
| 15 | — | — | — | — | — | — | 150 | 140 | 115 | 100 | 85 | 75 | 70 | 65 | 65 | 60 | |
| 20 | — | — | — | — | — | — | — | — | 145 | 125 | 115 | 90 | 80 | 80 | 80 | 75 | |
| 25 | — | — | — | — | — | — | — | — | — | — | 150 | 135 | 105 | 95 | 95 | 90 | |
| 30 | — | — | — | — | — | — | — | — | — | — | — | 155 | 120 | 105 | 100 | 95 | |
| 5P30 | 2.5 | — | — | — | — | 130 | 105 | 90 | 85 | 75 | 70 | 65 | 55 | 55 | 55 | 50 | 50 |
| 10P30 | 5 | — | — | — | — | — | 145 | 135 | 115 | 100 | 95 | 80 | 75 | 75 | 65 | 60 | 60 |
| 10 | — | — | — | — | — | — | — | 170 | 155 | 125 | 115 | 110 | 90 | 80 | 80 | 80 | |
| 15 | — | — | — | — | — | — | — | — | — | — | 115 | 140 | 115 | 100 | 100 | 95 | |
| 20 | — | — | — | — | — | — | — | — | — | — | — | — | 140 | 125 | 120 | 110 | |
| 25 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 145 | 130 |
Dimension & outline drawing of CGIS1555 — click image to zoom / view original.
