Three-phase and zero-sequence integrated combination current transformer. Suitable for installation in outdoor circuit breakers or ring main units. Used for three-phase and zero-sequence current measurement and protection. Also applicable for zero-sequence current protection of multi-cable circuits. Compliant with IEC 61869 and GB/T 20840 standards. Epoxy resin cast construction, compact design, easy installation. Integrated three-phase + zero-sequence function saves space and cost.
LSXZ is a 12kV outdoor three-phase integrated CT with zero-sequence, ideal for pole-mounted circuit breakers and RMUs.
| Paramètre | Spécification | Vérification |
|---|---|---|
| Type de produit | Current Transformer | IEC 61869, GB/T 20840 |
| Code modèle | LSXZ | Marquage de la plaque constructeur |
| Tension primaire | 12kV | Essai de tension nominale (IEC 61869-1/3) |
| Tension secondaire | 5A or 1A | Vérification du rapport à la fréquence nominale |
| Classe de précision | 0.2S, 0.5, 5P20, 5P30 | 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 | IEC 61869, GB/T 20840 | Certifié selon les normes listées |
| Fréquence | 50/60Hz | Selon IEC 61869-1 |
| Environnement | Indoor pillar-type epoxy resin cast | Selon les limites de la fiche technique |
Idéal pour
Non recommandé pour
secondary terminals 1S1/1S2 for measurement, 2S1/2S2 for protection (if applicable). Never open-circuit the secondary of a CT while energized - hazardous voltage. Ground the secondary winding at one point. For zero-sequence CT, ensure proper polarity and grounding per IEC 61869.
Conforme à : IEC 61869, GB/T 20840
S_total = ΣS_instrument + I₂² × (ρ × 2L / A)
Q : What is the insulation level of LSXZ?
R : 12kV system; power-frequency withstand 42kV; lightning impulse withstand 75kV peak.
Q : Can LSXZ be used indoors?
R : No, it is designed for outdoor pole-mounted applications.
Q : What accuracy classes are available?
R : 0.2S, 0.5, 5P20, and 5P30.
Les champs manquants sont marqués [On Request] — jamais inventés. Les lignes de vérification M2/M5/M6 suivent les conventions IEC 61869 / IEEE C57.13.
| Parameter | Value |
|---|---|
| Product performance complies with standards | GB/T20840.1, 2 and IEC61869-1, 2 standards |
| Rated voltage | 0.72/3kV |
| Rated frequency | 50Hz or 60Hz |
| Rated secondary current | 5A or 1A |
| Ambient temperature | -40℃~+60℃ |
| Altitude | Not exceeding 3000m |
| Pollution degree | Class II |
| Rated continuous thermal current | 120%~120% In |
Dessin d'encombrement et de dimensions du LSXZ — cliquez sur l'image pour zoomer / afficher l'original.
