Functional characteristics■ Three remote functions: telemetry (including direct flow), remote signaling and remote control;
■ Protection function: three-phase three section over-current protection function, zero sequence protection function, reclosing; and locking reclosing function;
■ Intelligent distributed logic function: realize local fault clearing, automatic fault isolation, automatic power supply transfer, automatic power supply recovery in non fault section; logic manual, automatic reset and other functions;
■Remote / local operation: remote / local closing and opening operations are mutually locked, and the control outlet is controlled by soft and hard pressing plates;
■ Power supply function: two way power supply switching. When AC power is lost, it will automatically and seamlessly switch to the backup power supply for power supply. At the same time, it will realize the automatic management (battery activation, alarm, protection) function for the backup power supply;
■ Communication function: multiple network ports and serial ports, supporting multiple communication protocols;
■ Wireless communication: wireless communication can be realized by touching notebook;
■Status indication: there are obvious operation, communication, line fault and other local status indication signals;
■ Data processing function: any configuration and combination of data sent from the master station; load rate of distribution transformer, three-phase imbalance, telemetry over limit, extreme value, qualification rate statistics, etc;
■ Extended function: receive and transmit fault indicator signal; cooperate with variable load cabinet to judge the detection of single-phase grounding fault.
technical parameterTelemetering
■ Rated voltage: AC220V / 100V, ≤ 0.5%;
■ Rated current: 5A / 1a, accuracy ≤ 0.5%;
■ Power (active, reactive, power factor): ≤ 1%;
■ DC voltage: accuracy ≤ 0.2%;
Remote communication
■ Remote signaling power supply: DC24V / DC48V adaptive;
■SOE resolution: ≤ 2ms;
■ Software anti shake time: 0-65535ms can be set;
■Single / double point remote signaling is optional;
remote control
■ Output mode: empty contact output, pulse quantity 1-65535ms can be set;
■ Contact capacity: AC 250V / 5A, DC 80V / 2A or DC 110 / 0.5A pure resistance load;
■ Contact life: on and off ≥ 105 times;
■ Telemetry: UA, UB, UC, U0 (or UAB, UAC), IA, IB, IC, I0 (or composite), 1 CHANNEL DC
environment condition
Working temperature: - 40 ℃ - + 75 ℃;
Mechanical properties: the protection level of the box body reaches IP65;Altitude: ≤ 3000m;
Access capacity
■Mail: 7 ways;
■ Remote control: 2 ways (closing and opening);
Working power supply
■ Automatic switching of two-way AC power supply: AC220V (± 20%);
■Backup power supply: rated voltage: DC24V, single battery no less than 7Ah, normal operation ≥ 8 hours after one closing and opening operation;
■ Power capacity configuration: ≥ 120W;
Communication configuration
■ Communication interface: 2 RJ45, 2 RS232;
■ Communication protocol: IEC60870-5-101, iec608, 70-5-104, MODBUS-RTU and other protocols, complying with DL / T 634.5
Standard requirements;
EMC
■ According to GB / T 15153, surge immunity test and radiated electromagnetic
The field immunity, pulse magnetic field immunity, high frequency interference immunity and fast transient pulse group interference are up to level 4.