product details
overview
ZHHV the series of microcomputer protection and monitoring devices are based on "one device (an interval )a protection and monitoring device on the switch cabinet developed based on the fully decentralized design model of "one device". the device chassis has a compact design, good sealing, strong anti-interference and anti-vibration capabilities, and can meet the requirements of 10 KV and the protection and monitoring needs of equipment such as feeder lines with voltage levels below. the device can be flexibly configured according to user requirements to achieve cost-effectiveness.
main features
1.it has complete protection functions and local monitoring functions. according to user needs, communication functions are optional to achieve simple and practical comprehensive monitoring functions.
2.the selection of high-performance, high-reliability, high-integration wide-temperature military or industrial-grade chips; high-precision resistance-capacitance components; and sealed relays ensure the reliability of the device in high and low-temperature environments.
3.fully enclosed anti-interference unit chassis, new back-plug structure design, double-layer shielding, the bus is not lead out, reducing the impact of electromagnetic interference.
4.design the monitoring system according to the reliability requirements of relay protection to improve the overall reliability of the system to truly realize unattended substations.
5.the switch remote signaling adopts dual-position acquisition, which avoids the problem of remote signaling jitter during switch operation.
6.the device has a complete self-checking function. when it is found that the device is not working properly, the outlet can be reliably locked to ensure that the device does not malfunction.
7.using a dedicated clock chip, supported by a separate crystal oscillator and equipped with a backup battery, the clock can keep time correctly even after the device is powered off, allowing the device to accurately record various fault information.
8.the internal circuit board adopts surface mount technology, and all components used are from first-tier brands, ensuring the reliability and stability of the device.
9.the device has a three-level watchdog, external hardware watchdog, CPU hardware timer watchdog and software watchdog ensure that the device will not crash under any circumstances.
10.with high-speed magnetic isolation technology RS485 communication interface and CAN communication interface, communication is stable and reliable, RS485 communication adoption MODBUS-RTU the protocol can be selected through settings, CAN the communication interface adopts IEC60870-5-104 protocol.
11.the software in the device adopts a modular design, has a variety of redundancy measures, and has passed the test of long-term on-site operation. the program runs stably and reliably.
12.it adopts a full chinese lcd display interface, multi-layer menu display, rich display information, and friendly human-machine interface, and the debugging work can be completed without complicated training.
main technical parameters
appearance and installation dimensions
