The comprehensive protection device adopts a new and improved measurement technology and has a powerful vectorization operation function. Due to different digital processing of various analog values, the fundamental wave quantity, high frequency component and DC component are effectively separated, eliminating the need for The influence of offset and noise on the measurement accuracy can effectively compensate the decay of the signal measurement element, which ensures the long-term, stable and reliable operation of the device in various harsh environments.
▲ la, lb, lc protection current (measured);
▲ UAB, UBC, UCA three-phase line voltage (measured);
▲ 10 zero sequence current (measured);
▲ 3UO zero sequence voltage (measured);
▲ The sampling element adopts precision voltage and current transformer, which is small in size, light in weight and small in load;
▲ Using high-speed and high-precision DSP microprocessor, which can quickly process the 9th harmonic;


▲ Close relay;
▲ Opening relay;
▲ Protection relay;
▲ Accident warning relay;
▲ Event alarm relay;
▲ 2 remote control relays;
▲Optional independent anti-jump circuit without opening and closing current requirements;


▲ 10-channel passive switch input isolated by photoelectric coupling element;
▲ The unique anti-shake filtering algorithm eliminates the misjudgment caused by debounce and instantaneous spark interference;


▲ The jumping and closing relay can be selected by software and external connection, switch on and off,
▲ The signal relay can be flexibly configured to hold or pulse jog output;


▲ The comprehensive protection arm is equipped with a dot-matrix 128*64, high-contrast blue-white-white graphic LCD display;
▲ Similar to the full Chinese menu operation of the WIN interface, it can display system parameters such as simulation, primary system diagram, measurement data, switch status, real-time data, event records, protection settings, etc.
▲ The flexible texture button is used to select the screen menu and drive, switch the data screen and set the fixed value. The interface operation will not have any impact on the system operation. The fixed value modification is password protected.
▲ Through the bus interface, it can be connected with the PC to realize the programming of more parameters;
▲ Main working conditions of monitoring, self-diagnosis and equipment circuit,
▲ The internal abnormality of the device (data, fixed value, storage components, ports, communication) is reported;
▲ PT disconnection alarm;


Display and save the most recent event records. If a new fault occurs, it can describe the fault of the system and the response of the protection device in detail. The details of the event record include:
▲ Record fault trip, event alarm, etc.;
▲ Resolution 2ms, power-off hold;


Supported communication interface: RS485;
It can form a geographical span network system through multi-contact network connection. The single line is stable in the RS485 bus mode, stably connecting 64 nodes, the maximum transmission distance is 1200mm, and the maximum speed can reach 9600bps;
▲ Industrial computer via RS485-RS232 converter, via RS485-fiber converter;
▲ Communication protocol Modbus-RTU;

2.1, environmental conditions

2.2, power

2.3, protect AC signal input

2.4, measure AC signal input

2.5, Open into the basin signal input

2.6, mechanical properties and structure

2.7, open the basin relay output

2.8, event record

2.9, pass letter catch mouth

2.10, try test Require

2.11, EMC Electromagnetic Compatibility

Anti-high frequency interference test IEC255-22-1 1M Attenuated Shockwave	common mode	2.5kV
	differential mode	1.0kV
Electrostatic discharge interference test  III Class IEC6100-4-2	contact	6.0kV
	Air	8.0kV
Radiated electromagnetic field interference test EN55011	Test field strength
	scanning frequency	150kHz---80MHz
RFI test	Reference directly in common mode (IEC6100-4-6)	10V/m (rms) , f=150kHz--- 80MHz
	cited in radiation (IEC6100-4-6)	10V/m (rms) , f=80Hz---1000MHz
fast transient test IEC255-4	Common Mode Voltage Peak Pulse Frequency per - polarity duration	2kV	4kV
		5kz	2.5kz
		10 min
Surge lightning test IEC6100-4-5	Power, AC, DC inlets	4KV	common mode
		2KV	differential mode
	I/O Entrance	2KV	common mode
		1KV	differential mode