Indoor single-phase epoxy resin casting current transformer complying with GB/T20840.1/2 and IEC61869-1/2 standards, insulation level 12/42/75kV, rated frequency 50/60Hz, secondary current 5A or 1A. Optional primary current ranges:20-200A、300A、400A、500-600A、800A、1000A; accuracy combinations of 0.2S/10P、0.5S/10P with rated output:0.2S10VA、0.5S10VA、10P10 15VA、10P15 10VA. Short-time thermal current 80I₁ₙ, dynamic stable current 200I₁ₙ, net weight 16kg, operating ambient temperature -5℃~+40℃.
Indoor 10kV epoxy cast current transformer for medium-voltage switchgear, suitable for metering and protection with 0.2S/0.5S accuracy.
| Paramètre | Spécification | Vérification |
|---|---|---|
| Type de produit | Current Transformer | [On Request] |
| Code modèle | LFS-10G | Marquage de la plaque constructeur |
| Tension primaire | 0.66kV | Essai de tension nominale (IEC 61869-1/3) |
| Tension secondaire | 5A | Vérification du rapport à la fréquence nominale |
| Classe de précision | 0.2S/0.5S | Essai de précision (IEC 61869-2 / IEEE C57.13) |
| Charge nominale | 10VA | Essai de charge à la puissance VA nominale |
| Type d'isolement | Dry Epoxy Resin | Essais diélectriques selon la norme |
| Niveau d'isolement (BIL) | [On Request] | Tenue à fréquence industrielle et au choc de foudre |
| Normes | [On Request] | Certifié selon les normes listées |
| Fréquence | 50/60Hz | Selon IEC 61869-1 |
| Environnement | [On Request] | Selon les limites de la fiche technique |
Idéal pour
Non recommandé pour
For current transformer: connect primary terminals in series with the line. Secondary terminals: 1S1/1S2 for metering winding (0.2S/0.5S), 2S1/2S2 for protection winding (10P). Never open-circuit the secondary of a CT while energized - hazardous voltage. Ground the secondary winding at one point. Follow IEC 61869-2 terminal markings.
Conforme à : [On Request]
S_total = ΣS_instrument + I₂² × (ρ × 2L / A)
Q : What is the insulation level of this CT?
R : The insulation level is 12/42/75kV, meaning 12kV system voltage, 42kV power-frequency withstand, and 75kV lightning impulse withstand.
Q : Can the secondary current be 1A?
R : Yes, the secondary current can be 5A or 1A as per the description.
Q : What are the accuracy classes available?
R : Accuracy combinations include 0.2S/10P and 0.5S/10P, with rated outputs as specified.
Les champs manquants sont marqués [On Request] — jamais inventés. Les lignes de vérification M2/M5/M6 suivent les conventions IEC 61869 / IEEE C57.13.
| Rated primary current I1n (A) | Accuracy classCombined | Accuracy class & rated output (VA) COSφ=0.8 0.2 (S) | Accuracy class & rated output (VA) COSφ=0.8 0.5 (S) | Accuracy class & rated output (VA) COSφ=0.8 10P10 | Accuracy class & rated output (VA) COSφ=0.8 10P15 | Short-time thermal current I1th (kA/S) | Rated dynamic current I dyn (kA) | Weight (kg) |
|---|---|---|---|---|---|---|---|---|
| 20-200 | 0.2(S)/10P | 10 | 10 | 15 | 10 | 80/1n | 200/1n | 16 |
| 300 | 0.2(S)/10P | 10 | 10 | 15 | 10 | 21 | 50 | 16 |
| 400 | 0.2(S)/10P | 10 | 10 | 15 | 10 | 24 | 60 | 16 |
| 500-600 | 0.5(S)/10P | 10 | 10 | 15 | 10 | 30 | 72 | 16 |
| 800 | 0.5(S)/10P | 10 | 10 | 15 | 10 | 40 | 80 | 16 |
| 1000 | 0.5(S)/10P | 10 | 10 | 15 | 10 | 50 | 80 | 16 |
Dessin d'encombrement et de dimensions du LFS-10G — cliquez sur l'image pour zoomer / afficher l'original.
