▍ brief 　↴

---

　　Microcomputer relay protection testerIt is a new type of intelligent testing instrument developed in the past decade. Previously, relay protection testing tools were mainly composed of voltage regulators and phase shifters, which were bulky and had low accuracy, and could no longer meet the verification work of modern microcomputer relay protection. With the continuous development of science and technology,Microcomputer relay protection testerIt has been widely used in various fields such as line protection, main transformer differential protection, excitation control, etc. The comprehensive automation of substations has become mainstream.

YLJB-60 seriesMicrocomputer based multifunctional relay protection testerAdopting the new generation relay protection testing system based on Windows CE operating system independently developed by Shaanxi Yilian Electrical Equipment Co., Ltd,Microcomputer relay protection testerThe digital phase-locked algorithm and SPWM technology developed based on the current advanced SOC design concept have advanced high-precision signals andefficiencyHigh stability power amplifier, providing users with comprehensive, fully functional, and easy to operate testing solutions.

▍ Functional Features 　↴

---

1. System features
● True color LCD display with a fully Chinese Windows style operating interface.

● Adopting advanced embedded systems.

2. Hardware features
● Excellent linear current and voltage amplifiers.
 >Extremely high reliability.
>The output waveform is smooth and realistic, without burrs or high-order harmonics that are easily generated by switching amplifiers.
>Real and accurate small current waveform, with no electromagnetic pollution.
>There are no current or voltage boosters in the current and voltage sources, and a direct coupling method is used to enable the output frequency range of the power supply to be from 0 to 1000Hz. It can output AC voltage and current of various frequencies, such as square waves, waveforms that vary exponentially, and superimposed mixed waveforms, which meet the transient testing requirements of protection devices and achieve the purpose of simple simulation testing of various protection devices.
● Excellent amplitude frequency characteristics and transient response
>Adopting the DSP and large-scale programmable device FPGA from the new American company TI, the high-precision 1448 point waveform simulation has better transient response and is more suitable for the development direction of new fast microcomputer protection.
>The first use of 20 bit serial port DA in China further improves output accuracy.
● Real simultaneous output of current and voltage, with adjustable amplitude, phase, and frequency independently and continuously
>Truly achieve simultaneous output of 7 voltages and 6 currents. （YLJB-6066、YLJB-6066+）
>Truly achieve simultaneous output of 6 currents and 4 voltages. （YLJB-6063、YLJB-6063+）
>Truly achieve simultaneous output of 7 voltages and 3 currents. （YLJB-6036）
● Complete self-protection function
>If the output circuit of the voltage source is short circuited or voltage distortion is caused by overload, the real-time monitoring circuit of the voltage source will automatically turn off the voltage amplifier, the panel short circuit indicator light will immediately light up, and a warning buzzer will sound. After the short circuit or overload disappears, the voltage amplifier automatically resumes normal operation.
>When the high current output lasts for a long time or the load carried by the current circuit is too large, causing the temperature rise of the tester to be too high, the temperature protection monitoring circuit will automatically turn off the current amplifier, the panel overheating indicator light will immediately light up, and a warning buzzer will sound. When the temperature drops within the allowable range, the current amplifier automatically resumes normal operation.
● Open circuit indication of current source
>The output circuit of the current source is open, and the corresponding IA, IB, IC, Ia, Ib, Ic on the panel will light up.
● Unique heat dissipation components
>Built in four high-power exhaust fans. Cooperate with temperature protection detection measures to ensure that the power amplifier has excellent stability and reliability under high current and long-term operation.
● High vibration resistance
>The device uses an architectural frame structure internally, which has excellent anti vibration function.
>The packaging box adopts high-strength aluminum alloy chassis with anti vibration and anti impact properties.
● Convenient and efficient on-site DC voltage supply

>0-300V (0.6A) auxiliary DC power supply, controlled by software, can independently provide working power to protection devices or other equipment.

3. Software features
● Improve offline or online testing capabilities
>Relays for various types of voltage, current, frequency, power, impedance, harmonics, differential, synchronization, etc. can be tested manually or automatically. They can simulate various fault types for distance and zero sequence protection device calibration and protection device group testing. They can automatically scan microcomputer and digital transformer and generator set differential protection ratio braking curves and have GPS triggering function.
● The software automatically detects whether the power supply of the instrument is grounded, ensuring reliable on-site testing safety.
● Good online compatibility system
>The upper computer testing software supports Windows 2000/Windows XP/Windows Vista/Windows 7/Windows 10 testing systems.

● A friendly and user-friendly Windows style operating interface

▍ Model and Technical Parameters 　↴

---

model	electric current	voltage
YLJB-6066i	3×（0～60A）/Xiang or6×（0～30A）/each other	7×（0～300V）/each other
YLJB-6063i	3×（0～60A）/Xiang or6×（0～30A）/each other	4×（0～300V）/each other
YLJB-6034i	3×（0～30A）/each other	4×（0～300V）/each other
YLJB-6066+	3×（0～60A）/Xiang or6×（0～30A）/each other	7×（0～130V）/each other
YLJB-6063+	3×（0～60A）/Xiang or6×（0～30A）/each other	4×（0～130V）/each other
YLJB-6066	3×（0～40A）/Xiang or6×（0～20A）/each other	7×（0～130V）/each other
YLJB-6063	3×（0～40A）/Xiang or6×（0～20A）/each other	4×（0～130V）/each other
YLJB-6040	3×（0～40A）/each other	4×（0～130V）/each other
YLJB-6034	3×（0～30A）/each other	4×（0～130V）/each other

1. Usage conditions
● Environmental temperature: -20~75oC

● Relative humidity:<90%

2. Power supply
● Single phase: AC220V+20%
● Power: 1000VA15A (Max)

● Power frequency: 50Hz+10%

3. AC current source
● Output adjustment: The amplitude, frequency, and phase of each phase's output current can be independently adjusted
● Output accuracy error: ± 1mA (0.2-0.5A), ± 0.1% (0.5A-Imax)
● Maximum output power:

output current	30A	40A	60A
Zui High Power	≥450VA	≥520VA	≥600VA

● Adjustable step size and resolution of output current amplitude: within the range of 0 to Imax, the smallest adjustable step size is 0.001A, and the resolution is 0.001A
● Current rise and fall time: less than 50 μ s
● Adjustable range, adjustable step size, and resolution of output current frequency: Within the range of 0-1000Hz, the smallest adjustable step size is 0.001Hz, and the resolution is 0.001Hz

● Accuracy of output current frequency:

● Amplitude frequency characteristics range of 5-1000Hz amplitude variation: ≤ 0.2%
● Total harmonic distortion rate of output current: within the range of 0.5~Imax, the total harmonic distortion rate is ≤ 0.5%
● Duration of output current:

Output range	＜10A	10A～20A	20A～30A	30A～Imax
Output time	CONTINUOUS	＞75s	＞20s	＞10s

● Protection function: Open circuit protection

4. AC voltage source
● Output adjustment: The amplitude, frequency, and phase of each phase's output voltage can be independently adjusted
● Output accuracy error: ± 2mV (0.2~2V), ± 0.1% (2V~Umax)
● Output power: ≥ 60VA/phase
● Adjustable step size and resolution of output voltage: Within the range of 0-120V, the smallest adjustable step size is 0.001V, and the resolution is 0.001V
● Voltage rise and fall time: less than 100 μ s
● Adjustable range, adjustable step size, and resolution of output voltage frequency: Within the range of 0-1000Hz, the smallest adjustable step size is 0.001Hz, and the resolution is 0.001Hz
● Accuracy of output voltage frequency:

Output range	0～65Hz	65～450Hz	450～1000Hz
Frequency accuracy	＜1mHz	＜10mHz	＜20mHz

● Amplitude frequency characteristic 5-1000Hz, range amplitude variation: ≤ 0.2%
● Total harmonic distortion rate of output voltage: Within the range of 2-120V, the total harmonic distortion rate is ≤ 0.5%
● UX voltage setting: can be set to zero sequence voltage or any value

● Protection function: overload and short circuit protection

5. DC source
● Dc Voltage Source
>Output range: 0-300V (Ubc), 3 × (0-130V)
>Output accuracy: ± 10mV (0.5-5V), ± 0.2% (5-300V)
>Adjustable step size and resolution of output voltage amplitude: Within the range of 0-300V, the smallest adjustable step size is 0.001V, and the resolution is 0.001V
>Maximum output power: 180W
>Protection function: overload and short circuit protection
● DC current source
>Output range: 3 × (0-20A)
>Output accuracy: ± 5mA (0.2~1A), ± 0.5% (1A~Imax)
>Adjustable step size and resolution of output current amplitude: within the range of 0 to Imax, the smallest adjustable step size is 0.001A, and the resolution is 0.001A
>Maximum output power: ≥ 300W
● Auxiliary DC voltage source
>Output range: 0-300V, 0.6A

>Accuracy: ≤ 0.5%, ripple coefficient ≤ 0.1%

6. Phase angle
● Phase shift range: -360 ° to+360 °
● Accuracy: ± 0.2 °

● Adjustable step size and resolution: Adjustable step size of 0.001 °, resolution of 0.001 °

7. Current and voltage can superimpose harmonic frequencies

● Can stack harmonics and direct current of any amplitude from 2 to 20 times

8. Synchronization

● Voltage and current synchronicity ≤ 10 μ s.

9. Input volume and time measurement
● 8 pairs of independent input capacity, isolation voltage of 500V, compatible with empty contacts and potential contacts of 15V~250V, automatic polarity
● Identification, expandable to 64 channels.
● Timer range 0.1ms~999999.999s
● Resolution: 0.1ms

● Timing accuracy: 1ms (less than 1s)

10. Open quantity
● 4 sets of programmable auxiliary contacts

 Contact capacity: 250VDC/AC, 2A

11. External dimensions

● 440mm×145mm×360mm

---

Yilian Electric specializes in producing microcomputer based multifunctional relay protection testers,Relay protection testerMicrocomputer relay protection tester, with a wide selection of products, manufacturer's prices, free guidance on usage, professional electrical testing for 10 years, looking for microcomputer type multifunctional relay protection tester, relay protection tester, microcomputer relay protection tester, choose Yilian Electric, and create high-quality electrical testing products.