Indoor single-phase open-type self-powered current transformer, matched with passive microcomputer integrated protection devices. Power supply winding generates electric energy from primary current excitation to start protection equipment; power supply works normally when primary current exceeds 10% rated primary current, power factor COSφ=0.8.
LMZK-10PU is a self-powered open-core CT for indoor RMU applications, providing protection and metering with a built-in power winding. It suits 15kV systems with insulation level 18/55/105kV.
| Paramètre | Spécification | Vérification |
|---|---|---|
| Type de produit | Current Transformer | [On Request] |
| Code modèle | LMZK-10PU | Marquage de la plaque constructeur |
| Tension primaire | 15kV | Essai de tension nominale (IEC 61869-1/3) |
| Tension secondaire | [On Request] | Vérification du rapport à la fréquence nominale |
| Classe de précision | 0.2/3P(6P)、0.5/3P(6P)、1.0/3P(6P) | Essai de précision (IEC 61869-2 / IEEE C57.13) |
| Charge nominale | 20VA(0.2),75VA(0.5),120VA(1.0),100VA(3P) | Essai de charge à la puissance VA nominale |
| Type d'isolement | Dry Epoxy Resin | Essais diélectriques selon la norme |
| Niveau d'isolement (BIL) | 18/55/105kV | Tenue à fréquence industrielle et au choc de foudre |
| Normes | [On Request] | Certifié selon les normes listées |
| Fréquence | 50Hz / 60Hz | Selon IEC 61869-1 |
| Environnement | [On Request] | Selon les limites de la fiche technique |
Idéal pour
Non recommandé pour
Connect primary conductor through the open core. Secondary terminals: 1S1/1S2 for metering, 2S1/2S2 for protection. The power supply winding terminals are [On Request]. 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 of LMZK-10PU?
R : The insulation level is 18/55/105kV, meaning 18kV system voltage, power-frequency withstand 55kV, lightning impulse withstand 105kV peak.
Q : How does the self-powered feature work?
R : The built-in power winding generates energy from primary current to power passive protection devices, operating when primary current exceeds 10% of rated.
Q : What accuracy classes are available?
R : Accuracy classes include 0.2/3P, 0.5/3P, and 1.0/3P, with corresponding rated burdens up to 120VA.
Les champs manquants sont marqués [On Request] — jamais inventés. Les lignes de vérification M2/M5/M6 suivent les conventions IEC 61869 / IEEE C57.13.
| Model | Rated primary current I1n (A) | Accuracy class & rated output (VA) COSφ=0.8 Protection winding10P10 | Accuracy class & rated output (VA) COSφ=0.8 Power supply winding | Dimensions Φd/ΦD/H |
|---|---|---|---|---|
| LMZK1250-10PU | 100/5 | 1 | 5 | 50/124/100 |
| LMZK1150-10PU | 200/5 | 1.5 | 5 | 50/110/100 |
| LMZK1150-10PU | 300/5 | 2.5 | 5 | 50/110/100 |
| LMZK1150-10PU | 400/5 | 3.75 | 5 | 50/110/100 |
| LMZK1150-10PU | 600/5 | 5 | 5 | 50/110/100 |
Dessin d'encombrement et de dimensions du LMZK-10PU — cliquez sur l'image pour zoomer / afficher l'original.
