YYR8500 series protection measurement and control devices are suitable for the protection, measurement, control and backup power automatic switching functions of lines, busbars, capacitors, motors and factory transformers with voltage levels of 35KV and below. They can be installed locally in switch cabinets or Centralized screen installation provides communication interfaces, which can be used together with other protection and automation equipment to form an automation system through communication interfaces.
1. The power supply of the device is AC and DC;
2. It adopts a fully enclosed structure and has good earthquake resistance and dustproof performance;
3. Miniaturized design, small size, light weight, beautiful appearance and easy installation;
4. Full Chinese LCD display, human-machine interface is clear and easy to understand, and operation and setting are extremely convenient;
5. Completed exception records, event records, and operation records, all information will be retained after power failure;
6. The device is equipped with 1 RS485 communication interface and integrates MODBUS standard communication protocol;
7. The device can be equipped with 1 Ethernet communication interface and adopts IEC60870-5-103 protocol to transmit fault wave recording files;
8. It has a compact and delicate appearance, a reasonable structure, and uses high-grade, high-quality components, multi-layer board technology and SMT technology to make the product have high electrical performance;
9. It has a complete circuit breaker operating circuit.
A Insulation resistance: Under normal test atmospheric conditions, use a megohmmeter with an open circuit voltage of 500V to measure the insulation resistance value between the live circuit part of the device and the non-charged metal and shell, as well as between circuits that are not electrically connected; normal test Under atmospheric conditions, the insulation resistance of each circuit should not be less than 100MΩ.
B Dielectric strength: Under normal test atmospheric conditions, the device can withstand a power frequency withstand voltage test with a frequency of 50Hz and a test voltage of 2000V for 1 minute without breakdown, flashover and component damage.
C Impulse voltage: Under normal test atmospheric conditions, the device's DC input circuit, AC input circuit, signal output contact circuits to ground and between circuits can withstand the short-term impact of (1.2/50) μs standard lightning waves Voltage test, open circuit test voltage 5kV, no insulation damage.
D Burst interference: The device can withstand the 1MHz and 100kHz burst interference tests specified in GB/T14598.12-1998 (idt IEC60255-22-1:1998). The test severity level is level Ш, the test voltage is 2.5kV in common mode and 1kV in differential mode.
E Radiated electromagnetic field interference: The device can withstand the radiated electromagnetic field interference test with a severity level of Ш specified in GB/T14598.9-1995 (idt IEC60255-22-3:1989), that is, the test field strength is 10V/m.
F Electrostatic discharge interference: The device can withstand the severity level specified in GB/T14598.14-1998 (idt IEC60255-22-3:1989) as level IV, the contact discharge test voltage is 8kV, the allowable deviation is ±5%, and the air discharge The test voltage is 15kV and the allowable deviation is ±5% electrostatic discharge interference test.
G Fast transient interference: The device can be tested according to the severity level IV fast transient interference specified in GB/T14598.10-1996 (idt IEC60255-22-4:1992), that is, the test voltage is 4kV, and the allowable deviation is ±10 %
Working temperature: -25℃~+70℃
Storage temperature: -40℃+85℃
A Working conditions: Able to withstand severe vibration response and impact response of level Ι;
B Transportation conditions: It can withstand vibration durability, impact durability and collision with severe level Ι.
