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型号含义 | Meaning Of Model LJ-1/2/4/7(LH)
L H - Φ___ 零序互感器
Zero sequence transformer
孔径 /Aperture
接地保护 /Ground fault protection
零序电流互感器 /Zero sequence current transformer
产品概述 | Summary
本系列零序电流互感器适用于户内、额定频率 50H2 或 60Hz，额定电压 35kV 及以下的小接地电流系统中供电缆接地保护用 - 与本系列电流互感器配套使
用的继电器型号为 DL-1I/0.2 型。
本型零序电流互感器的铁心为环形，二次绕组均匀绕制在铁芯上，用夹件紧铁心，夹件备有安装孔。
1．本系列零序电流互感器一次主绝缘由电缆保证，产品仅考核二次绕组的绝缘性能。二次绕组对地能受 3kV 工频耐压。
2．本系列零序电流互感器的灵敏度满足下表的要求：
The zero current transformers are used indoors. They are used for eable gronnding protection in the light gronn ding current system up to rated
frequency 50Hz or 60Hz and rated vokage 35kVand below. The type ofthe relay fitting with the transformers is DL-11/0.2.
The iron core of the product is annular. The secondary windings go uniforrnity around the core. The clip with mounting hole clamps the core.
Because the cablc protects the primary mam insulation, so, the insulation characteristics of secondary winding are only examined.
The secondary windiugs can be able to withstand the power frequency test voltage of3kV to ground.
The sensitivity of the product shall meet the requirernents Iisted in form.
外形及安装尺寸 | Overall Dimension Drawing(mm)
Í%
-
ÍE
)
4 4
" "
#
安装孔 重量
型号 Type B(mm) ΦD(mm) Φd(mm) H(mm)
A1(mm) A2(mm) Weight(kg)
LH-1（LJ-1） 130 52 160 193 75 250 15
LH-2（LJ-2） 150 135 200 230 110 305 21
LH-4（LJ-4） 220 135 280 285 140 355 28
LH-7（LJ-7） 220 135 300 310 185 385 31
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