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Relay protection tester Model no.JBC-703 (4U 3I)

Product description:
INQUIRY

Advantage

1. Model no.JBC-703 gives 4 phase voltage, 3 phase current output, voltage 120V/phase, current 40A/phase, 3 phases in parallel can up to 120A. Digital Signal Processor Microcomputer. Not only test the traditional relays and protectors, but also test the modern micro computer relays, special for transformer differential protection and transfer equipments

2. All technical indicators fully meet the standard DL/T624-1997: Technical condition of the relay computer test device.

3. Classic Windows XP operating interface, friendly man-machine interface, easy and fast to operate; High-performance embedded industrial control computer and 8.4 inch resolution of 800 × 600 TFT true color display which provides rich visual information, includes the current working condition and all kinds of help information.

4. The Windows XP system comes with the restore function; avoid system crashes caused due to illegal shutdown, or malfunction, etc.

5. Equipped with ultra-thin industrial keyboard and optical mouse, complete a variety of operations using keyboard or mouse the same as ordinary PC.

6. The main control board is DSP + FPGA architecture, 16 bit DAC output, generates high - density sine wave 2000 points each circle to fundamental wave, which greatly improve the wave quality and the accuracy of the test instrument.

7. Using high-fidelity linear amplifier. Both to ensure the accuracy of a low current, but also guarantee the stability of the high current.

8. RS232 directly connect with PC, without any adapter cable, easy to use.

9. Can be connected to a laptop computer (optional).Laptop computers and industrial machines use the same software, no need to re-learn the methods of operation.

10. With a separate DC auxiliary voltage source, output voltage 110V(1A)，220V(0.6A), provides relays or protective devices which require DC power.

11. The software with self calibrating function, which avoid to calibrate accuracy by adjusting relays after open the case, greatly improve the stability of the accuracy.

Technical Parameter

AC current output

Phase current output (RMS) 0~40A, Output Precision 0.5degree

3 phase parallel current output (RMS) 0~120A

Long-time working value of Phase current 10A

Maximum output power of Phase current 450VA

Maximum output power of 3 parallel current 900VA

Maximum Permitted work time of 3 parallel current 10S

Frequency range ( fundamental) 20~1000Hz

Harmonic time 2~20

DC current output

Current output 0～±10A / phase, 0～±30A / 3 parallel

Output Precision 0.5 degree

AC voltage output

Phase voltage output (RMS) 0~120V Output Precision 0.5 degree

Line voltage output (RMS) 0~240V

Phase voltage / Line phase output power 80VA / 100VA

Frequency range (fundamental) 20~1000Hz

Harmonic time 1~20

DC voltage output

Phase voltage output range 0～±160V Output Precision 0.5 degree

Line voltage output range 0～±320V

Phase voltage / Line phase output power 70VA / 140VA

10 path digital input and 8 path digital output

Time measuring range 0.1ms～9999s，accuracy of measurement ＜0.1ms

Size & weight

400x360x160mm

18kg

Measurement items

1. Relay test

Relay type	Test item	Test module	Note
Signal relay	Relative test item	AC test Intermediate relay DC test	If the relay with AC/DC input, please choose “AC/DC test”. For the signal relay with small rated current, please choose voltage loop test of the device.
Time relay
Intermediate relay
Reclosing relay
Current relay	Relative test item	AC test Current voltage extremely inverse current relay DC test	Test sequence component relay at sequence component module of “AC test”. Test the extremely inverse current relay at “extremely inverse current”.
Over (less) voltage relay
Sequence component relay
Synchronism-check（or phase comparison）relay
Extremely inverse current relay
Differential relay	DC magnetic properties	Differential relay Differential test Harmonic test	Please wire correctly according the method of “differential test”.
	Harmonic brake characteristics
	Proportional brake characteristics	Differential test Differential relay AC test
Power ( direction ) Relay	Relative test item	Power direction AC test	Please choose wiring method and protect the approximate action boundary before test.
Impedance relay
Synchronous relay	Relative test item	Synchronous test AC test	During the test, UA as the system side and UB as test side at “synchronous test” module, can test operating frequency, operating voltage, operating phase, and automatically make pene- contemporaneous test.
Frequency relay	Relative test item	Frequency test	Can test Operating frequency and Slip closed lock value.

2. Microprocessor-based protection device

Types of relay protection		Test item	Test module	Note
Line protection	Multi-stage over-current	Relative test item	AC Test Frequency Test Power direction	Can do most of the relay and micro computer test at “AC test” module.
	Over (less ) voltage
	Sequence components voltage and current
	Frequency devices
	Power directional protection
	Reclosing and conversion failure	Relative test item	Group test State series	Required synchronous and no voltage test, Ua as shunt side voltage output
	Distance and zero sequence	Distance and zero sequence set value calibration	Stepped impedance Zero-sequence protection	“Stepped impedance” and “zero sequence protection” can one-time automatic test multi-stage , various fault types , distance and zero sequence value of various phase
	Distance and zero sequence	Impedance characteristics	Impedance phase characteristics
	Power frequency variation distance	Set value calibration	Power frequency variation distance	The fault current should be set enough, for example 10~15A.
	Composite voltage Locking (direction)current	Over-current, low voltage, negative sequence voltage,latching over-current.	AC test	Some of the “low voltage” and “negative sequence voltage” injected by different terminal, you should change it during the test.
	Low cycle, low voltage load shedding device	Relative test item	Synchronous low cycle Frequency Test AC Test	If other conditions meet the requirements, the device did not operate, check if the device need input current and switch contacts.
Generator transformer protection	Differential protection	Proportional braking characteristics	Differential relay Differential protection AC test	Generator differential protection, “differential protection” when tested, it can be regarded as the wiring Y / Y, high and low voltage side balance coefficients (=1) are a transformer protection. The " differential test " focus on curve characteristics search, includes Proportion of braking border search , proportion of braking designated test, harmonic brake border search and harmonic restraint sentinel test , comprehensive test differential protection .
	Differential protection	Harmonic brake characteristics	Differential test Differential protection Harmonic test
	Field loss protection	Relative test item	AC test	Please note the angle between output current and voltage.
	Excitation protection	Relative test item	AC test	Please note the angle between output current and voltage.
	Composite voltage locking ( direction) over-current (Reserve)	Relative test item	AC test
Others	Automatic synchronizing device	Relative test item	Synchronous test	Wiring correctly according the instruction manual.
	Protection device	Action logic and action time for each switch	State series	Wiring correctly is important.
	Bus bar differential protection Fiber-optic lines differential protection	Relative test item	AC test	Please refer to Annex 6 for the description of BP 2B and RCS - 915 in the southern part protection. Before the test, make sure that the device forms a “self-loop”, if yes, the protection action value should be equal to half the setting value.