Electric Technology Experimental Equipment

Electric Technology Experimental Equipment China Engineering Lab Training System Suppliers

This equipment is designed for experiments covering course of "Circuit analysis", "fundamentals of electrical engineering", "electrical engineering", "digital electronics", "analog electronics", "motor control" and "relay control" which addresses the requirements of colleges or vocational schools.

Details:
It consists of control panel, desk, equipment kit and 3-phase squirrel-cage asynchronous motor.
AC power supply
3-phase variable autotransformer 0-450v
Single-phase variable autotransformer 0-250v
Three AC pointer type voltmeters for input or output switched measurements
functions of over current, short circuit protection and leakage protection provided
Fluorescent lamps: 220V@30W, the terminals are connected to the panel. One or lighting and the other for
experiment.
Timer/alarm recorder
Function of lab service supervision including lab time set, alarming at expire time, faults history
One RMS value AC digital voltmeter: 0~500V measurement with auto judging & ranging, accuracy: class 0.5, 3 and 1/2 -digit display.
Fundamentals of electric
Provides Kirchhoff's law, superposition principle, Norton theorem, two-port network, Reciprocity theorem,
R LC series resonant circuits, RC series/parallel frequency selective network of first-order and second-order
dynamic circuit
components
Capacitors, resistors, diodes, triodes, zener diode, potentiometes and 12V signal lamp, regulable resistors:
0~99999.9Ω/2W.
circuits
Provides single-phase, 3-phase load, fluorescent lamp, transformer, mutual inductance and wattmeter.
Six incandescent lamps, capacitors, 30W fluorescent lamp ballast, starter, iron-core transformer, current
sockets etc.
AC digital millivoltmeter, power meter and power factor meter
DSP based intelligent meter for measurements of watt, power factor with function of data recording
Voltage/current ranges: 0-450V/0-5A
AC digital millivoltmeter
Measuring range: 0.2mV~600V(RMS value), ranges of it: 200mV, 2V, 20V, 200V, 600V, with the functions of
over-range alarming and turn-off the power automatically,
Frequency range: 10Hz~600kHz
Input impedance: 1MΩ
Lab Exercises:

Basic lab exercises:

Application of instruments and calculation of measuring error
Instruments measuring error reduction
V-I characteristics plotting of linear & nonlinear circuit components
Potential & voltage measuring and potential diagram plotting
Demonstration of Kirchhoff's law and troubleshooting
Demonstration of superposition principle and troubleshooting
Equivalent transform between voltage source and current source
Demonstration of Thevenin theorem
Demonstration of Norton theorem
Two-port network
Demonstration of Reciprocity theorem
Research on controlled sources (VCVS, VCCS, CCVS and CCCS)
Observation and measurement of typical electrical signal
Response testing of first-order RC circuits
Response testing of second-order RC circuits
Impedance characteristics measurement of RLC components
Characteristics testing of RC series & parallel frequency selective network
Research on R LC series resonant circuits
AC circuit equivalent parameters measurement
Research on the phasor of sinusoidal steady-state AC circuits
Mutual inductance
Characteristics testing of single-phase iron-core transformer
Voltage and current measurement of 3-phase AC circuits
Calibration of single-phase wattmeter
Measurement of power factor and phase sequence

DC stabilized power supply
0.0~30V/1A continuous adjustable power supply with short-circuit protection and
auto-recovery function for each circuit

Adjustable constant
current source
0~200mA continuous adjustable constant current source, stepped into 2mA, 20mA and
200mA with the function of output open-circuit or short-circuit protection and 0.1%
adjustment accuracy, load reliability-4and change rate-4.

Analog AC voltmeter
With two calibrate pointer(red, black) , measuring range: 0~500V, stepped into 10V,
30V, 100V, 300V, 500V.
Input impedance: 1MΩ.
Accuracy: 1.0%.
With the function of over-range alarming and turn-off power automatically.

Analog AC ammeter
With two calibrate pointer(red, black) , measuring range: 0~5A, stepped into 0.3A,1A,
3A, 5A.
Accuracy: 1.0%.
With the function of over-range alarming and turn-off power automatically.

DC voltmeter
Measuring range: 0~200V, is stepped into 200mV, 2V, 20V, 200V.
Input impedance: 10MΩ.
Accuracy : 0.5%.
With the function of over-range alarming and turn-off power automatically.

DC millimeter
Measuring range: 0~2000mA, is stepped into 2mA, 20mA, 200mA, 2000mA .
Accuracy : 0.5%.
With the function of over-range alarming and turn-off power automatically.

Single/three-phase power, power factor meters
Constructed by microprocessor, high-speed A/D conversion chip and fully
digit-displayed circuits. Intelligent control is obtained by keys and digit display.
The sample signal of measured voltage and current are sent to DSP after A/D
conversion for positive/active power calculation. Measurement of single/three-phase
power with accuracy of grade 0.5 and ranges of voltmeter and ammeters are 450V, 5A.
also, data can be recorded and inquiry. The total power is obtained by sum of P1+P2.

RMS value AC digital millivoltmeter
Accuracy measurement of every kind of complex waveform.
Voltage measurement range: 0.2mV~600V (RMS value), accuracy: ±1%,overlapping in
five ranges 200mV, 2V, 20V, 200V, 600V, controlled by keys, with 3 and 1/2-digit display
and over-range alarming, indication and power cutoff. Frequency measurement range:
10Hz~600kHz, input impedance: 1 MΩ, input capacitance:

Function generator
Frequency range 0.2Hz~2MHz overlapping in seven ranges and frequency adjustment rate
is 0.1~1; output waveform: sine wave, square wave, triangle wave, pulse wave, ramp
wave; output impedance: 50Ω; output signal type: FM/frequency sweep, and types of
sweep: linear and logarithm with rate of 5s~10ms; output amplitude: 20Vp-p (1MΩ),
10Vp-p (50Ω); with output short-circuit protection which bearing ±35V for one
minute; adjustment of degree of symmetry: 20%~80%.

20M two-channel analog oscilloscope
Deflection factor: 5mV/DIV-5V/DIV overlapping in 10 ranges
Vertical mode: CH1, CH2, ALT, CHOP, ADD
3 and 1/2 -digit digital

multimeter
DC voltage: 200mV/2V/20V/200V/1000V ±(0.5%+3)
AC voltage: 2V/20V/200V/750V ±(0.8%+5)
DC current:20uA/2mA/200mA/20A ±(1.5%+3)
AC current: 2mA/20mA/20A ±(1.5%+5)
resistance: 200Ω/2kΩ/20kΩ/200kΩ/2MΩ/20MΩ ±(0.8%+5)
conductance: (0.1-100)nS ±(1.0%+30)
capacitance: 20nF/200nF/20uF/200uF ±(4.0%+10)
frequency: 20kHz ±(1.5%+25) temperature: -40oC-1000oC ±(0.75%+3)
Special function: diode test, triode test, on/off alarm, low-voltage display, data
hold, self-turning off, functional protection, self-recovery insurance, shakeproof, 10MΩ input impedance, 3 times/s sample rate, 40-400Hz AC frequency response, manual
operation and the maximum display is 1999.