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

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

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     0.1ms9999saccuracy 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-checkor phase comparisonrelay

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

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 .

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

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.




Acceassories

1.Portable aluminium alloy box: 1 unit;

1.Power supply cable:  1 unit;

2.CD drive:   1 unit;

3.USB/RS232 connection:  1 unit;

4.Test cable:  1 set

5.Test clip and accessary: 1 set;

6.Fuse: 3units/10A Fuse; 3 units/2A fuse

7.Certificate: 1 unit

8.Calibration Report: 1 unit

9.Operating manual: 1 unit


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