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LFB-B55系列闭环型电流传感器的初、次级之间是绝缘的，用于测量直流、交流和脉冲电流。
The LFB-B55 Series current sensor is a closed loop device based on the measuring principle of the hall effect,with a galvanic isolation between primary and secondary circuit,it usesfor precision measurement of DC, AC and pulse current.
| 电参数 Electrical data(Ta=25℃±5℃) |
| 型号 Type | LFB50B55 | LFB100B55 | LFB200B55 | LFB300B55 | LFB400B55 | 单位 Unit |
| 额定输入电流(Ipn) | 50 | 100 | 200 | 300 | 400 | A |
| 测量电流范围(Ip) | 75 | 150 | 300 | 450 | 580 | A |
| 匝 比 (Np/Ns) Turns ratio(Np/Ns) | 1:2000 | 1:2000 | 1:2000 | 1:3000 | 1:3000 | T |
| 次级线圈电阻 Secondary resister | 25 | 25 | 25 | 46 | 46 | Ω |
| 额定次级输出电流 | 25 | 50 | 100 | 100 | 133.3 | mA |
| 额定输出电压 Rated output | 5±0.5% | V | ||||
| 电源电压 Supply voltage | ±12～±15 | V | ||||
| 功耗电流 Power consumption | ≤25+IpX(Np/Ns) | mA | ||||
| 零点失调电压 Zero voltage | @Ip=0 ≤±15 | mV | ||||
| 零点失调电压温漂 ZeroOffset drift | @ -40～+85℃ ≤±0.5 | mV/℃ | ||||
| 输出电压温漂 Output drift | @ -40～+85℃ ≤±0.25 | mV/℃ | ||||
| 响应时间 Response time | @100A/μS, 10%-90% ＜1.0 | µs | ||||
| 线性度 Linearity | @Ip=0-±Ipn ≤0.1 | %FS | ||||
| 绝缘电压 | @ 50HZ,AC,1min 6 | KV | ||||
| di/dt跟随精度 di/dt accurately followed | ＞100 | A/µs | ||||
| 带宽 Bandwidth | @ -3dbDC…150 | KHz | ||||
| 使用说明 Directions for use |
1. 产品箭头的方向为Ip方向。
Is will be in a forward direction when the Ip flows according to the direction of the arrowhead.
2. 初级导体温度不应超过100℃。
The primary conductor should be≤100℃.
3. 母排充满初级穿孔时动态表现（di/dt和响应时间）为。
The dynamic performance (di/dt and the response time)is the best when the primary hole is fully filled with the bus bar.
4. 为了达到的磁耦合，初级线匝应绕在传感器顶部。
The primary turns should be at the top of the sensor for the best magnetic coupling.
| |
l UL94-V0.
l EN60947-1:2004
l IEC60950-1:2001
l EN50178:1998
SJ 20790-2000
| 总体参数 General date |
|
| 数值 Value | 单位 Unit | 符号 Symbol |
| 工作温度 Operating temperature | -40 to +85 | ºC | TA |
| 储存温度 Storage temperature | -40 to +125 | ºC | TS |
| 毛重(约)Mass(approx) | 75
| g | M |
| 特性图Characteristics chart |
脉冲电流信号响应特性 抗脉冲电压干扰特性
Pulse current signal response characteristic Effects of impulse noise
| 应用 Applications |
l 变频调速系统
Variable speed drives
l 电焊机
Welding machine
l 通讯电源
Battery supplied applications
l 不间断电源UPS
Uninterruptible Power Supplies (UPS)
l 电化学
Electrochemical
| 结构参数 Mechanical dimension(for reference only) |
Remarks：
1. All dimensions are in mm.
2. General tolerance ±1mm
