Indoor single-phase epoxy resin casting current transformer complying with GB/T20840.1/2 and IEC61869-1/2 standards; rated insulation level 24/65/125kV, rated frequency 50/60Hz, rated secondary current 5A or 1A. Optional primary current covers 20–2000A; accuracy-class rated outputs: 10VA for 0.2(S)/0.5(S), 15VA for 10P15; short-time thermal current ranges 31.5–100kA, rated dynamic stable current ranges 80–160kA; product weight:36.5kg; ambient operating temperature -5℃~+40℃.
Indoor epoxy resin current transformer for 12kV systems, suitable for metering and protection in MV switchgear.
| Paramètre | Spécification | Vérification |
|---|---|---|
| Type de produit | Current Transformer | [On Request] |
| Code modèle | LZZBJ9-20-180b-3 | 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 in series with the line. Secondary terminals: 1S1-1S2 for metering, 2S1-2S2 for protection. Never open-circuit the secondary of a CT while energized - hazardous voltage. Ground the secondary winding at one point.
Conforme à : [On Request]
S_total = ΣS_instrument + I₂² × (ρ × 2L / A)
Q : What is the insulation level?
R : The insulation level is 12/42/75kV, meaning 12kV system, 42kV power-frequency withstand, 75kV lightning impulse withstand.
Q : What are the available secondary currents?
R : Secondary current is 5A or 1A, selectable.
Q : Is it suitable for outdoor use?
R : No, it is designed for indoor use only.
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 | 0.2(S) | 0.5(S) | 1J/P15 | Short-time thermal current Ith (kA/S) | Rated dynamic current Idyn (kA) | Weight (kg) |
|---|---|---|---|---|---|---|---|
| 20-200 | 0.2(S)/0.2(S) | 10 | 10 | 15 | 150 I1n | 375 I1n | 36.5 |
| 300 | 0.2(S)/0.5(S) | 10 | 10 | 15 | 31.5 | 80 | 36.5 |
| 400-500 | 0.2(S)/0.5(S) | 10 | 10 | 15 | 45 | 110 | 36.5 |
| 600-800 | 0.5(S)/10P | 10 | 10 | 15 | 63 | 130 | 36.5 |
| 1600-2000 | 0.5(S)/10P | 10 | 15 | 15 | 100 | 160 | 36.5 |
Dessin d'encombrement et de dimensions du LZZBJ9-20-180b-3 — cliquez sur l'image pour zoomer / afficher l'original.
