GY101 series motor microcomputer monitoring protector is the crystallization of the modern new and high technology which summarized the development and research of motor protector and microcomputer protector., has the advanced field bus interface based on imported IC, intellectual property rights of patent technology and the software copyright.The motor protection is executed and controlled by the microprocessor,support the feeder protection to perform the motor operation, self-diagnosis and communication with PC, etc. The protector provides the measurements for motor protection, to avoid industrial accidents caused by overload, locked-rotor, overvoltage, undervoltage, light load, open phase, three-phase imbalance, grounding failure, which ensures the normal operation of the equipment to greatest extend.
Impeccable microcomputer protection monitoring device provides comprehensive protection of collection, calculation, analysis, monitoring, alarm and control of detailed information of various operation conditions in the process of motor running. Protectors achieve timely, accurate protection and ensure the effect of the equipment operation safety by fault alarm, protection action (protection tripping), and delay action.Detailed information of motor running situation can be real-time monitored on upper computer by data information and communication, then provide management information after computer data processing.The limit alarm will be given before major failures may occur to remind manager, which greatly avoid the unnecessary downtime affecting normal production and ensure the effectiveness of the equipment operation to the greatest extent.When the motor running parameters reach a preset warning value, no trigger tripping but early warning will be given;when the limit reaches the preset tripping value, the protection device will get into the tripping trigger delay. If recovered to the normal operation in preset tripping delay time, tripping will be canceled.If exceeded delay time limit, the tripping signal will be given to disconnect the power supply to stop motor running. The protector provides not only protection function but all sorts of protection information generated by device to the computer management system and the communication interface.



Starting protection: In the process of starting, only provides protection with overvoltage, undervoltage, short circuit, phase and three-phase unbalanced, start overtime without overcurrent.
Over voltage protection: When working voltage of protector exceed the set voltage for 6 seconds(default value is 260V).
Low voltage protection:When working voltage of protector is lower than the set voltage for 6 seconds(default value is 180V)
Open-phase protection：Any phase current of the motor is power off , protector will perform in 2 seconds.
Motor Shaft Lock Protection：When running current exceeds set multiple，protector will perform in 2 seconds.
Unbalance protection：When current value difference between any two phases exceeds set percentage，protector will perform in 2 seconds.
Undercurrent: When the continuous working current is lower than the threshold set owe flow, protector will perform in 10 seconds.
Leakage protection：When leakage current value is detected to exceed the set value by zero sequence current transformer, protector will perform in 1 second.
Short-circuit protection: When short-circuit current exceed leakage current 5 times, protector will perform in 2 seconds.
Over-current protection：The action time of the over-current protection turns into inverse time protection or quick break protection(sheet 2)

Current specification (sheet 1)

product model	current specification	specification	remark
6A	0.5-6A	0.3-3KW	One-time straight through A/B/C transformer
20A	2-20A	1-7.5KW
50A	5-50A	4-22KW
100A	10-100A	7.5-45KW
200A	20-200A	25-75KW
300/5A	60-300A	45-132KW	reprovision300/5CT
400/5A	80-400A	55-250KW	reprovision400/5CT
600/5A	120-600A	75-300KW	reprovision600/5CT

inverse time-delay operation： unit second（sheet 2）

Serial Nomultiple     time	0	1	2	3
1.1	5	60	180	600
1.2	5	50	150	450
1.3	5	35	100	300
1.5	5	10	30	90
2.0	5	6	15	45
3.0	5	3	7	20
4.0	5	2	4	10

Self-starting:Require the user to set self-start time and at the meantime motor can not communication start.(factory default 0 is closed, optional function)
Start timeout protection：When motor start current exceeds the delay time of start. (factory default is 5s,1-120s available)
Contact capacity：AC220/5A AC380V/3A Electrical endurance≥105
Contact characteristics：contact J1 close, contact J2 open (Be subject to shell wiring diagram)
Permissible error：±5%
Fission display：500cm distance less than 500cm standard configuration 80cm
Setting function：Set protection  parameters according to running current value of the motor.
Matching function：Under 200A no need to configure the transformer, more than 200 a protector need to configure 3 standard transformer 5A. For example, 400A specification needs with 400A/5A current transformer.
Communication protocol: Support self-programmed and MODBUS and various kinds of communication protocol.
Current output: Three phase current average turns into DC4-20mA signal.
Note:1、It’s advisable that transformer is fixed at the bottom of the a.c. Contactor, using screws and standard 35 mm rail installation; Three-phase line respectively go through the transformer three holes; Connect the second line according to the shell wiring diagram and check before electricity debugging.
2、AC power of protector itself should be connected ahead of the a.c. Contactor to guarantee power supply for a long time.