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 rated current 5A or 1A. Optional primary current ranges:20-100A、150A、200-300A、400-800A、1000-1250A; accuracy combination 0.2S/5P、0.5S/5P with rated output 15VA/20VA/30VA. Short-time thermal current 150I₁ₙ, dynamic stable current 375I₁ₙ, net weight 25kg, operating ambient temperature -5℃~+40℃.
Indoor 10kV current transformer for MV switchgear, suitable for metering and protection with 0.2S/5P accuracy.
| Paramètre | Spécification | Vérification |
|---|---|---|
| Type de produit | Current Transformer | [On Request] |
| Code modèle | LFZJ2-10 | Marquage de la plaque constructeur |
| Tension primaire | 10kV | Essai de tension nominale (IEC 61869-1/3) |
| Tension secondaire | 5A/1A | Vérification du rapport à la fréquence nominale |
| Classe de précision | [On Request] | Essai de précision (IEC 61869-2 / IEEE C57.13) |
| Charge nominale | [On Request] | Essai de charge à la puissance VA nominale |
| Type d'isolement | Dry Epoxy Resin | Essais diélectriques selon la norme |
| Niveau d'isolement (BIL) | 12/42/75kV | 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 | Ambient: -5℃~+40℃ | Selon les limites de la fiche technique |
Idéal pour
Non recommandé pour
secondary terminals 1S1/1S2 (protection winding 2S1-2S2). 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 this CT be used for both metering and protection?
R : Yes, it offers accuracy combination 0.2S/5P, suitable for both metering (0.2S) and protection (5P).
Q : What are the available primary current ranges?
R : Optional primary currents: 20-100A, 150A, 200-300A, 400-800A, 1000-1250A.
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 (A) | Accuracy classCombined | Accuracy class & rated output (VA) 0.2 (S) | Accuracy class & rated output (VA) 0.5 (S) | Accuracy class & rated output (VA) 5P10 | Short-time thermal current (kA) | Rated dynamic current (kA) | Weight (kg) |
|---|---|---|---|---|---|---|---|
| 20-100 | 0.2(S)/5P 0.5(S)/5P | 10 | 10 | 15 | 150*I*n | 375*I*n | 19 |
| 150 | 0.2(S)/5P 0.5(S)/5P | 10 | 10 | 15 | 16 | 40 | 19 |
| 200-300 | 0.2(S)/5P 0.5(S)/5P | 10 | 10 | 15 | 20 | 50 | 19 |
| 400-600 | 0.2(S)/5P 0.5(S)/5P | 10 | 10 | 15 | 31.5 | 80 | 19 |
| 1000-1250 | 0.2(S)/5P 0.5(S)/5P | 15 | 20 | 25 | 40 | 100 | 19 |
Dessin d'encombrement et de dimensions du LFZJ2-10 — cliquez sur l'image pour zoomer / afficher l'original.
