Indoor single-phase epoxy resin casting current transformer, compliant with GB/T20840.1/2 and IEC61869-1/2 standards; rated insulation level 12/42/75kV, rated frequency 50/60Hz, secondary rated current 5A or 1A. Four optional structural types are available: conventional 2s, dual-ratio 2s with secondary tapping, conventional 4s, dual-ratio 4s with secondary tapping. Optional primary current covers 20–1250A; accuracy-class rated outputs: 0.2(S):10VA, 0.5(S):10VA, 5(10)P10:15VA, 5(10)P15:15VA; short-time thermal current ranges 7.5–100kA, rated dynamic stable current ranges 25–160kA; corresponding weights:23kg、24.5kg、37kg for different structures; operating ambient temperature: -5℃~+40℃.
Indoor 12kV current transformer for MV switchgear, metering and protection. Suitable for 10kV systems with 50/60Hz.
| Paramètre | Spécification | Vérification |
|---|---|---|
| Type de produit | Current Transformer | [On Request] |
| Code modèle | LZZBJ9-12-150b-2s-4s | 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
connect primary through bushing; secondary terminals 1S1/1S2 for metering, 2S1/2S2 for protection (if dual-ratio). Never open-circuit the secondary of a CT while energized - hazardous voltage. Ground the secondary circuit at one point only. 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 : 12kV system; power-frequency withstand 42kV; lightning impulse withstand 75kV peak.
Q : Can this CT be used outdoors?
R : No, it is designed for indoor use only.
Q : What accuracy classes are available?
R : 0.2S, 0.5S for metering; 5P10, 5P15 for protection.
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) | Short-time thermal current (kA/s) | Rated dynamic current (kA) | Weight (kg) |
|---|---|---|---|---|---|
| 20-200 | 0.2(5)/0.5(5) | 10 10 15 15 | 150/1 | 375/1 | — |
| 300-400 | 0.2(5)/5P10 | 10 10 15 15 | 31.5 | 80 | — |
| 500 | 0.2(5)/5P15 | 10 10 15 15 | 31.5 | 80 | — |
| 600-800 | 0.2(5)/5P15 | 10 10 15 15 | 80 | 160 | — |
| 1000-1250 | 0.2(5)/5P20 | 10 10 15 15 | 100 | 160 | — |
Dessin d'encombrement et de dimensions du LZZBJ9-12-150b-2s-4s — cliquez sur l'image pour zoomer / afficher l'original.
