E0320J series current and voltage protection relay is a new generation developed by Dongfang Electronics, which is suitable for the requirements of 35 kV and below voltage levels, such as incoming and outgoing lines, transformers, capacitors, motors and so on. It integrates protection, measurement, control and communication, whose main functions include：
• Protection
• Measurement（Voltage、current、power、remote control）
• SOE（250 SOEs）
• Fault record（25 power system fault reports with time tag）
• Fault wave recording（31 fault wave recordings，no data loss in case of power off）
• Monitoring（hardware monitoring, software monitoring, trip loop monitoring）
• Communication（serial port/network port IEC60870-5-103/MODBUS/IEC61850 ）
| ANSI No. | IEC | Protection functions |
|---|---|---|
| 50, 50N, 50G | I>, I>>, I>>> IE>, IE>>, IE>>> IG>, IG>>, IG>>> | Definite-time overcurrent protection (phase/neutral/ground) |
| 51,51N,51G | Ip, IEp ,IGp | Inverse-time overcurrent protection (phase/neutral/ground) |
| 50BF | Breaker failure protection | |
| 79 | Auto-reclosure | |
| 46 | I2>, I2>> | Phase-balance current protection (negative-sequence protection) |
| Motor | The motor protection | |
| 74TC | Trip circuit supervision | |
| 67,67N, 67-TOC, 67N-TOC | Idir>, Idir>>, Idir>>>, Ip dir IEdir>, IEdir>>, IEdir>>>, IEp dir | Directional time-overcurrent protection (definite/inverse, phase/neutral) |
| 27 | V<,V<< | Under voltage protection |
| 59 | V>,V>> | Over voltage protection |
| 81O/U | f<,f<<,f>,f>> | Frequency protection |
| 64 | V0> | Ground fault protection |
| 50BC | Broken conductor protection |
• Inner Mongolia Bayan Gaul Coal Mine Project
• Tangshan Distribution Network Protection Project
• Vestas Wind Power Project
• Croatia Wind Power Project
• Afghanistan Distribution Substation Project
• Qingdao YIHE electric Project
• Uzbek Substation steel plant Project
| E0320JS | E0320J | E0320JA | |
|---|---|---|---|
| Compact | Standard | Enhanced | |
| Shape | |||
| Dimension(mm) | 148*103*175 | 179*152*178 | 179*152*178 |
| Installation dimension(mm) | 138*92 | 152*146 | 152*146 |
| LCD dimension(mm) | 32*54 | 60*60 | 60*60 |
| Analog input | |||
| PT | 4 | 4 | 4 |
| Protection CT | 4 | 4 | 4 |
| Measurement CT | 0 | 2 | 3 |
| Digital input/output | |||
| Digital input | 8 | 12 | 12 |
| Relay output | 4 | 8 | 8 |
| Programmable LED | 2 | 6 | 6 |
| Communication | |||
| Maintenance serial port/RS232 | 1 | 1 | 1 |
| Communication serial port/RS485 | 1 | 1 | 1 |
| Network communication port | 1 | 2 | |
| IEC61850 | √ | ||
| MODBUS | √ | √ | √ |
| IEC60870-5-101 | √ | √ | √ |
| IEC60870-5-103 | √ | √ | √ |
| IEC60870-5-104 | √ | √ | |
| Power supply | |||
| Input | 24/48 /60V DC | ||
| 110/220 V DC/AC | |||
