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 2500-5000A; multiple accuracy class combinations available with rated output ranging 20-30VA; product weight:60kg; ambient operating temperature -5℃~+40℃.
LMZB1-24 is a 24kV indoor current transformer for medium voltage switchgear, suitable for measurement and protection in 10kV systems. It offers high accuracy and compact design.
| Paramètre | Spécification | Vérification |
|---|---|---|
| Type de produit | Current Transformer | [On Request] |
| Code modèle | LMZB1-24 | 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 winding at one point. Follow IEC 61869-2 terminal conventions.
Conforme à : [On Request]
S_total = ΣS_instrument + I₂² × (ρ × 2L / A)
Q : What is the insulation level of LMZB1-24?
R : The insulation level is 12/42/75kV, meaning 12kV system voltage, 42kV power-frequency withstand, 75kV lightning impulse.
Q : Can it be used outdoors?
R : No, it is designed for indoor use only.
Q : What are the secondary ratings?
R : Secondary current is 5A or 1A, with rated output 20-30VA.
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 | Accuracy class & rated output (VA) COSΦ=0.8 | Weight (kg) |
|---|---|---|---|
| 2500 | 0.2/5P20/5P20 0.5/5P10/5P20/5P20 0.2/5P10/5P20/5P20 0.2/5P20/5P20/5P20 | 30/30/30 30/30/30/30 20/30/30/30 20/25/25/25 | 60 |
| 3000 | 0.2/5P20/5P20 0.5/5P10/5P20/5P20 0.2/5P10/5P20/5P20 0.2/5P20/5P20/5P20 | 30/30/30 30/30/30/30 30/30/30/30 30/30/30/30 | 60 |
| 4000 | 0.2/5P20/5P20 0.5/5P10/5P20/5P20 0.2/5P10/5P20/5P20 0.2/5P20/5P20/5P20 | 30/30/30 30/30/30/30 30/30/30/30 30/30/30/30 | 60 |
| 5000 | 0.2/5P20/5P20 0.5/5P10/5P20/5P20 0.2/5P10/5P20/5P20 0.2/5P20/5P20/5P20 | 30/30/30 30/30/30/30 30/30/30/30 30/30/30/30 | 60 |
Dessin d'encombrement et de dimensions du LMZB1-24 — cliquez sur l'image pour zoomer / afficher l'original.
