1 High-performance and high reliable hardware platform
Using dual-CPU structured (32-bit DSP chip of the TI company) and full-industrial platform desigan, and cooperated with the embedded real-time multi task operating system, it not only ensures the real-time and fast protection and calculation, but also the richness and operability of the interface.

u High anti-interference 
Equiped with the integral panel and the reinforced unit box, it can resist the strong vibration and interference, being adaptive to the harsh environment; and the measurement and the protection AI isolation sampling channels are completely independent. With the specialized analog and digital filtering design and high precision AC sampling technology, it can meet the requirements of measurement accuracy, and the protection action of large dynamic range; protection algorithm is mature, perfect and reliable.

u Hardware modularization
With the modularized structure, it has a great interchanges ability and thus easy maintenance, greatly reducing the demand for the spare parts.

u Overall function
The software is equipped with modular design, the various functions can be flexible configured in order to meet with the requirements of different users; the device can be stored in 8 setting values, and save more than 200 SOE information; fault recorder of large capacity, the total recorded time of wave can reach to 20s; The users can define Enable/Disenable by online work way, in order to available for application of different site of logical configuration.  

u Graphical user interface
It is equipped with 240×128 large screen LCD display, not only for the real-time display of current, voltage, frequency, power and all kinds of event information, but also can display the wiring diagram, show the interface can be online configuration through the front panel of the RS-232 interface. Button operation is simple, Chinese and English operation interface, multi-level user’s rights management, easy to operation by the maintenance personnel on the site.

u High precision clock

Support GPS pulse per second and B code timing, combined with the network and GPS timing, achieve the synchronization with the system clock

u Diversified communication interface
The device provides a high speed Ethernet interface and a RS-485 interface; the software supports MODBUS/RTU, the 103 /RTU protocol, the MODBUS/TCP, and the 103 /TCP protocol.

3. Main parameters

u Power supply：

Support AC220V, DC220V or DC110V power input，allowing the deviation –20%～+20%;

u The secondary rated voltage and current

5A, 2A or 1A, linear range 0.01In~20In 

100V or 100V/, 110V or 110V/or 400V or 400V/, linear range 0.2~1.2 Un;

u Accuracy：

Monitoring analog accuracy ±0.2%; current and voltage setting error ±3%; phase angle ±0.5;

frequency ±0.01Hz; straight flow ±1%；Power degree ±0.5%；Inherent action time ≤35ms；Time setting error≤±1%；remote signal resolution ≤1ms;

u Insulating property：

AC input to earth＞100 MΩ，DC input to earth＞100MΩ，signal and output contact to eartH＞100MΩ， input circuit to earth＞100 MΩ；bear for 2kV/ minute power frequency withstand voltage, can withstand the impact voltage of 5kV.

u The electromagnetic compatibility：

Electrostatic discharge, electric fast transient pulse group, surge shock to meet the 4 class national standard.

u The environmental conditions：

Operating temperature：-10℃~+55℃              Storage and transportation：-25℃~+70℃

Relative humidity：≯90%，no condensation        Atmospheric pressure：80~110kPa

3.  Main function

u DMP320C1F microprocessor generator differential protection device

Differentialquick-break protection, proportional differential protection (with instantaneous TA break blocking, enable/disenable for secondary harmonic restraint), zero-sequence transverse differential protection, differential current limit alarm, non power alarm, etc. 

u DMP320C1F microprocessor generator backup protection protection equipment

The 3-segment overcurrent protection (with direction, compound voltage blocking), zero-sequence overcurrent protection, zero-sequence overvoltage protection, one-point rotor, two-point to earth protection, stator to earth third harmonic ratio protection, loss of excitation protection, over-frequency and low frequency protection, over-voltage, low-voltage protection and negative sequence over-current protection, reverse power protection, over-excitation protection, low-impedance protection, district in (out) center of loss-step protection, over-load protection, breaker failure protection, machine card protection, non-electricity protection, PT break-line, loss of pressure alarm, control circuit break-line alarm, etc.