Indoor single-phase epoxy resin casting current transformer complying with GB/T20840.1/2 and IEC61869-1/2 standards; rated insulation level 40.5/95/185kV, rated frequency 50/60Hz, rated secondary current 5A or 1A. Optional primary current covers 20–3150A; accuracy-class rated outputs:30VA(0.2S/0.5S),30VA(0.5),30VA(5P20),25VA(5P25),20VA(5P30); short-time thermal current ranges 25–150kA, rated dynamic stable current ranges 63–375kA; product weight:140kg; ambient operating temperature -5℃~+40℃.
Indoor 35kV class current transformer for medium-voltage switchgear, metering and protection. Suitable for 10kV systems with 5A/1A secondary.
| Paramètre | Spécification | Vérification |
|---|---|---|
| Type de produit | Current Transformer | [On Request] |
| Code modèle | LZZBJ9-35D1 | 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. 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 : The insulation level is 12/42/75kV, meaning 12kV system voltage, 42kV power-frequency withstand, 75kV lightning impulse.
Q : Can this CT be used for both metering and protection?
R : Yes, it offers multiple accuracy classes (0.2S/0.5S for metering, 5P20/5P25/5P30 for protection) with separate secondary windings.
Q : What is the maximum primary current rating?
R : Optional primary current covers 20–3150A, with short-time thermal current up to 150kA.
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) | 0.5 | 5P20 | 5P25 | 5P30 | Short-time thermal current Ith (kA/S) | Rated dynamic current Idyn (kA) | Weight (kg) |
|---|---|---|---|---|---|---|---|---|---|
| 20-100 | 0.2(S)/5P, 0.5(S)/5P, 0.2(S)/5P/5P, 0.2(S)/5P/5P/5P | 30 | 30 | 30 | 25 | 20 | 150 I1n | 375 I1n | 140 |
| 150 | 0.2(S)/5P, 0.5(S)/5P, 0.2(S)/5P/5P, 0.2(S)/5P/5P/5P | 30 | 30 | 30 | 25 | 20 | 25 | 63 | 140 |
| 200-250 | 0.2(S)/5P, 0.5(S)/5P, 0.2(S)/5P/5P, 0.2(S)/5P/5P/5P | 30 | 30 | 30 | 25 | 20 | 31.5 | 80 | 140 |
| 300-500 | 0.2(S)/5P, 0.5(S)/5P, 0.2(S)/5P/5P, 0.2(S)/5P/5P/5P | 30 | 30 | 30 | 25 | 20 | 31.5 | 80 | 140 |
| 600-800 | 0.2(S)/5P, 0.5(S)/5P, 0.2(S)/5P/5P, 0.2(S)/5P/5P/5P | 30 | 30 | 30 | 25 | 20 | 31.5 | 80 | 140 |
| 1000-3150 | 0.2(S)/5P, 0.5(S)/5P, 0.2(S)/5P/5P, 0.2(S)/5P/5P/5P | 30 | 30 | 30 | 25 | 20 | 31.5 | 80 | 140 |
Dessin d'encombrement et de dimensions du LZZBJ9-35D1 — cliquez sur l'image pour zoomer / afficher l'original.
