fangyuan electric information

GDS—2 Type Advanced ELectric System Experimental Equipment
（Produced Inspected by Experts of Education Ministry Key Products Recommended in 211 Projects）

GDS-2 Type Advanced ELectric System Experimental Equipment

GDS—1 Type Advanced ELectric System Experimental Equipment

　　GDS-1/2 Advanced Electrical System Experiment Equipment is a newest experiment equipment, which lays equal stress on experiment and management, practicability and advancement. It has the advantages of beautiful configuration and compact structure. Integrating with several years experience in producing special education experiment equipment, main control screen and each functional component is delicately designed. By selecting relevant experiment module, it can accomplish the experiment course of Electrical Fundamental, Electrical Technique, Relay Control, Analong Electronic Technique, Digital Electronic Technique, Motor Pull, Motor Control, Power Electronics and etc.

Product Features：
1、Protection more credible, experiment safer and function more powerful
　The whole protection system uses current type creepage protection by primary side of insulation transformer and votage type creepage protection by its assistant side. All working power supplies are insulated from network voltage and use above-ground type design. Three-phase adjustable power supply has over current proteciton function. Master power supply uses breaker to switch to guarantee operation saftety.
2、Perfect combination of integrity and adaptability.
　Power supply control screen and all functional modules are carefully designed and flexibly allocated; All functional modules are easy to allocate, convenient for equipment administration. System power supply is control by key switch and facilitating daily maintenance.
3、Equal stress on progress and practicability
　All measuring meters have over measuring range protection function. Special circuit design ensures meters have strong anti-impact ability. And All power supply uses over load protection mode according to chracteristics.

Main functions and Parameters
GDS-2 Type Advanced ELectric System Experimental Equipment
I Power Supply Master Screen：（GDS-01）
1、Provide single-, three-phase adjustable AC voltage regulator power supply, electronic adjusting. Adjusting range 0—240V, voltage accuracy 2%, three-phase phase voltage monitoring, rated output current 1.5A. With over current protection function（rectification current 1.7A）. Cut off power supply source and at the same time give alarming indication. Restored and then can be started again. Special over current protection circuit design guarantee max. voltage output （line voltage 380V）of main circuitry. Direct short circuit of two phases will not damage experimental equipment.
2、According to special requirements of experimental equipment, provide single-phase adjustable and three-phase combination adjusting functions of AC voltage regulator power supply. Can make three-phase voltage be output balanced and unbalanced man-made, facilitating the experiment.
3、Experiment equipment has creepage current protection function. If there is creepage, master control screen takes action to cut off power supply and at the same sends creepage alarming signal.
II Voltage Regulator Power Supply（GDS-02）
1、Output adjustable regulator power supply 0-30V, continual adjustable, do not use shift adjusting mode. With over load cut off output and self-locking function. Max.output current 1.5A.
2、Adjustable voltage regulator power supply output has numerical display monitoring output voltage function.
III Current Regulating Source：（GDS-03）
1、Output adjustable voltage regulator power supply 0～30V, continual adjustable, do not use shift adjusting mode. With over load cut off output and self-locking function. Max.output current 1.5A. It has numerical display monitoring on output voltage.
2、Output adjustable current regulating power supply 0～5O0mA, continual adjustable, max. output voltage 20V. use both rough adjusting and fine adjusting.
3、Have current regulating indication function. With output current numerical display monitoring.
IV Signal Source（GDS-04）
1、Output sine wave, triangular wave and square wave etc. three types of waveshape. Frequency range 1-1MHz. Frequency and range adjustable, range 0-20Vp-p.
2、Numerical display frequency, frequency measuring range（1-1MHz）
V Precision Load（GDS-07〕
1、Two-way precision adjustable load, adjusting range 0-9999Ω, stepping adjusting 1Ω, accuracy 0.5 grade. With over load protection and self-locking function.
2、SCM control, Digital display for accurate resistance value. Use functional keys to select adjusting point by up and down keys.
VI DC Electric Meters（GDS-10）：voltage measuring range：5V、20V、50V、100V、250V、500V；Current meter 1 measuring range：25mA、100mA、
250mA、1A、2.5A、5A；Current meter 2 measuring range：200μA、2mA、20mA、100mA
VII AC Voltmeter（GDS-11）：voltage measuring range：5V、20V、50V、100V、250V、500V
VIII AC Current Meter（GDS-12）：current measuring range：25mA、100mA、250mA、1A、2.5A、5A
X Single-, three-phase power meter（GDS-13）：voltage measuring range：75V、250V；current measuring range 500mA、2A
Above meters use monolithic processor technology to colletct and process. With computer interface and functions of over measuring range protection, self-locking and alarming. Measuring range switch use up and down keys instead of key switch. Measuring accuracy is superior to 1.0 grade.

GDS-1 Advanced ELectric System Experimental Equipment
On aspect of AC voltage regulating mode of master control screen and allocation of measuring meter, it has the following differences from those of GDS-2 advanced electric system experimental equipment：
I Power Supply Master Screen：（G0S—01A）：Provide single-, three-phase adjustable AC power supply, use translation adjusting. Voltage adjusting range 0-240V（phase voltage）, rated output current 1A, hang protection. Instantaneous impact current 5A, instantaneous protection. Cut off power supply and at the same time give over current alrking indication. Restored and then can be started again.
II Signal Source：（GDS-04A）：Output three waveshapes such as sine wave, triangular wave and square wave. Frequency range 1-100KHz. Frequency and range adjustable, range 0～10Vp-p. Digital display frequency, frequency measuring range （1一1MHz）.
III Instrument Series（GDS-17）：including DC voltmeter, DC current meter and AC voltmeter, current meter each a piece；With over measuring range protection, self-locking and alarming functions；DC voltage measuring range：2V、20V、200V；AC current measuring range：20mA、200mA、2A；AC voltage measuring range：20V、200V、500V；AC current measuring range：2O0mA、2A、5A：Use keys to switch measuring range；All meters use digital diplay mode, measuring accuracy superior to 1.0 grade.

Experiment Projects
1、Circuit Experiment
Measuring error calculation of the use of basic electrical meters
Calculation to reduce instument measuring errors
Kirchoffs laws and circuit potential map
Overlay principle and replacement principle
Thevenins theorem, Norton's rule and Teligen principle
Volt-ampere characteristic test of circuit element
Voltage source and current source and their equivalent transformation and transmission conditions of Max. power
Controlled source characteristic test（1）VCCS, VCVS
Controlled source characteristic test（2）CCCS,CCVS
AC circuit voltage and current vectorgraph
AC impedance frequency characteristics of circuit component
AC circuit component parameter test（voltmeter current method）
AC circuit component parameter test（wattmeter method）
Mutualinductance circuit parameter test
Fluorescent lamp power factor lift experiment
Transformer characterstic test
Verification of inducing instrument——electric meter
Accepting circuit experiment test
Double-opening network experiment test
RC network amplitude-frequency characteristic experiment test
Transient response research of one-step circuit
Transient response research of two-step circuit

Voltage and current experimental test in three-phase circuit
Three circuit active, reactive power test method（1）
Three circuit active, reactive power test method （2）
Power factor and phase sequence test
Negative impedance converter
Gyrator
2、Electric Control Experiment
　Three-phase squirrel-cage asynchronous motor test
　Direct startup and postive and negative circulation control of three-phase squirrel-cage asynchronous motor
　Three-phase squirrel-cage asynchronous motor Y一△ startup
　Power consumption brake control of hree-phase squirrel-cage asynchronous motor
　Sequence, time and stroke control of three-phase squirrel-cage asynchronous motor
　Wortable shunt automatic control circuit
　Lathe electric control circuit
　Electric block electric control circuit
　Milling machine electric control circuit
3、Electronics Experiment
　Analog elctronic technique experiment
　Digital elctronic technique experiment