12 kv indoor block type CT current transformer LZZBJ9-12
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12 kv indoor block type CT current transformer LZZBJ9-12
Product Description
Current transformer LZZBJ9-12 is made indoor cast-resin insulated, totally enclosed structure, It's designed for current, power measurement and relay protection in AC power system with rated frequency 50/60Hz, rated voltage 12kV and below.It is especially suitable for using in narrow case (fixed) ringnet switchgear.
Suitable Operating Condition
1.Altiude is no more than 1000m.
2.The maximum change of surrouding temperature is no more than -30~+40°C.
3.Universal product is only used in the area with less than 85% relative humidity.
4.Installation field had no serious effect transformer insulated, steam, chemical
deposition, dust foul and other explosive and corrosive medium, and the field without
serious shake and bump.
Rated output dynamic and thermal stability of current products see table
Technical date:
| Type | Rated transformation ratio(A) | Accuracy Classes combination | Accuracy class and rated output COSφ=0.8 | 1s thermal current (kA) | Rated dynamic current(kA) | ||||||||||
| 0.2s | 0.2 | 0.5 | 10p15 | ||||||||||||
LZZBJ9-12 (AS12/150B/2S) (AS12/150B/4S) (AS12/175B/2S) (AS12/175B/4S) | 5/5 | 0.2S/10P15 0.2/10P15 0.5/10P15 | 10 | 10 | 10 | 15 | 0.8 | 1.9 | |||||||
| 10/5 | 1.5 | 3.8 | |||||||||||||
| 15/5 | 2.3 | 5.8 | |||||||||||||
| 20/5 | 3 | 7.5 | |||||||||||||
| 30/5 | 4.5 | 11.2 | |||||||||||||
| 40/5 | 6 | 15 | |||||||||||||
| 50/5 | 7.5 | 18.8 | |||||||||||||
| 75/5 | 11.5 | 29 | |||||||||||||
| 100/5 | 15 | 37.5 | |||||||||||||
| 150~200/5 | 22.5 | 56.5 | |||||||||||||
| 300~600/5 | 45 | 112.5 | |||||||||||||
| 800~2500/5 | 63 | 157.5 | |||||||||||||
Overall dimension drawing:
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