77C-LR中文资料Motor and Pump Protection数据手册Littelfuse规格书
77C-LR规格书详情
简介
77C-LR属于工业自动化与控制的保护继电器系统。由Littelfuse制造生产的77C-LR保护继电器和系统保护继电器可检测工业系统的异常工作状态,从而触发警报或将异常设备与系统隔离。常用检测功能包括:电弧闪光、温度监控、接地故障、过流、过压、逆相序、过频、欠频、缺相、相序或不平衡。
技术参数
更多- 制造商编号
:77C-LR
- 生产厂家
:Littelfuse
- Maximum Input Power
:10
- Input AC Line Frequency (Hz)
:50 / 60
- Output Form
:SPDT - Form C
- Output Load Rating (VA)
:Pilot Duty: 480 VA @ 240 VacB300; General Purpose: 10 A @ 240 Vac
- Full Load Amp Range (A)
:1.0 - 2.5 (looped conductors required); 2.0 - 9.0 (direct)
- Timing Accuracy (%)
:5% ±1 s
- Rapid Cycle Timer (s)
:0; 2 - 500 s
- Restart Delay Range
:After Under/Overcurrent: 2 - 500 m/s; # of Restarts: Overcurrent: 0; 1; oc1; 2; oc2; 3; oc3; 4; oc4; A (Automatic); OCA; Undercurrent: 0; 1; 2; 3; 4; A (Automatic)
- Repeat Accuracy (%)
:Voltage: ±0.5% of nominal voltage; Current: ±1% (direct; no external CTs)
- Overvoltage Trip Voltage (%)
:85V - HV setting
- Undervoltage Trip Voltage
:LV setting - 264 V
- Voltage Accuracy (%)
:±1%
- Overcurrent Trip Point
:(20 - 100 A) … MULT of 80 - 120% of CT primary
- Overcurrent Trip Class
:5; J5; 10; J10; 15; J15; 20; J20; 30; J30; or lin (linear)
- Undercurrent Trip Point
:0; 10 - 98 A … MULT or 40 - 100% of CT primary
- Undercurrent Trip Delay (s)
:2 - 60 s
- Current Accuracy (%)
:±3% (
- Ground Fault Accuracy (%)
:±15%
- Sensor Hole Size
:Max conductor size: 0.65 in (with insulation)
- Short Circuit (kA)
:UL: 100; CSA: 10
- Surge Protection
:IEC: 61000-4-5 Level 3 2 kV line-to-line; Level 4 4 kV line-to-ground
- Protection Class
:IP20; NEMA 1 (finger safe)
- Pollution Degree
:3
- CT Ratio
:1 or 2
- Address
:A01 - A99
- Termination Type
:7 in.-lbs.
- Mounting Method
:Surface mount (4 - #8 screws) or DIN rail mount
- Operating Temperature
:-20° to 70°C (-4° to 158°F)
- Storage Temperature (F/C)
:-40° to 80°C (-40° to 176°F)
- Humidity
:10 - 95% non-condensing per IEC 68-2-3
- Dimensions
:3.05 H x 3.85 W x 5.05 D in. (77.5 x 97.8 x 128.3 mm)
- Weight (lbs/g)
:0 Kg
- Check Stock
:Yes
| 供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
|---|---|---|---|---|---|---|---|
BOURNS |
24+ |
插件 |
7350 |
现货供应,当天可交货!免费送样,原厂技术支持!!! |
询价 | ||
AMPH |
23+ |
NA |
364 |
专做原装正品,假一罚百! |
询价 | ||
BOURNS/伯恩斯 |
2016 |
SMD |
40000 |
询价 | |||
BOURNS/伯恩斯 |
24+ |
DIP |
44729 |
原装现货,样品可售 |
询价 | ||
BOURNS/伯恩斯 |
23+ |
DIP |
10000 |
原厂授权代理,海外优势订货渠道。可提供大量库存,详 |
询价 | ||
TE |
25+ |
100 |
原厂现货渠道 |
询价 | |||
BOURNS/伯恩斯 |
22+ |
SMD |
8000 |
原装正品支持实单 |
询价 | ||
BOURNS/伯恩斯 |
15+Rohs |
Axial |
493900 |
一级质量长期可供应量大价格从优 |
询价 | ||
新 |
236 |
全新原装 货期两周 |
询价 | ||||
AMPHENOL |
2023+ |
58000 |
进口原装,现货热卖 |
询价 |


