The HME-702 three-phase relay protection tester offered here is designed to test all the major protection testing projects, including the 27 underfrequency protection, 59 overcurrent protection, 67 undervoltage protection, 81 overfrequency protection, 87 differential protection, 51 time overcurrent protection, 50 boundary protection, 21 distance protection, 86 rate of change of frequency protection, and 32 directional power protection, and others. This tester is capable of accurately measuring and analyzing the performance of the tested power systems, ensuring that the relays operate within their specified parameters, and helping ensure the continuous and stable operation of the power grid.
Main Features
Powerful current sources for testing even high-burden electromechanical relays
High current amplitudes for 5 A relay testing
High accuracy and versatility for testing static and numerical relays of all types
High accuracy injectional current for measure CT testing
Hardware overview
3-phase current output maximum 40A L-N
Maximum 120A L-N (Three-Phase Parallel)
4-phase voltage output maximum 120V AC L-N
Maximum 240V AC
Inbuild operation system with LCD screen
Main functions
AC/DC test
State Series
Harmonic Superposition Test
Power Direction & Impedance Test
Synchronization Test
Full Group Test I & II
Distance & Zero Sequence Protection
Differential test
Characteristic of Impedance
Differential Protection
Differential Harmonic
Current Generator
Setting range |
3-phase AC(L-N) |
3x0…40A |
1-phase AC(LL-LN) |
1x0…120A |
|
DC(L-N) |
3x…±10A |
|
|
3-phase AC(L-N) |
3x420VA at 40A |
Power |
1-phase AC(LL-LN) |
1x900VA at 120A |
|
DC(L-N) |
3x120VA at 10A |
Accuracy |
AC: ≤0.2% |
|
DC: ≤0.5% |
Voltage Generator
Setting range |
4-phase AC(L-N) |
4x0…120V |
1-phase AC(L-L) |
1x0…240V |
|
DC(L-N) |
3x…±160V |
|
Power |
4-phase AC(L-N) |
4x80VA at 120V |
1-phase AC(L-L) |
1x100VA at 240V |
|
DC(L-N) |
3x70VA at 160V |
|
Accuracy |
AC: ≤0.2% |
|
DC: ≤0.5% |
Auxiliary DC Supply
Voltage range |
110V/220V(max.1.5A) |
Power |
max.165VA/330VA |
Digital Inputs
Number |
8 |
Input characteristics |
idle contact or potential-free contact |
Threshold characteristics |
“0”:0~6V; “1”:11V~250V |
Max. measuring time |
0.1ms~9999s |
Time accuracy |
0.1ms |
Digital Outputs
Number |
4 |
Type |
idle contact |
Break capacity |
220VAC/0.5A, 220VDC/0.2A |
General Generators
Frequency |
range: 0~1000Hz(PC mode), 20~300Hz(local mode) |
accuracy:<10mHz(0~450Hz),<20mHz(450~1000Hz) |
|
resolution: 0.01Hz |
|
Phase |
range: 0~360° |
accuracy: 0.2° |
|
resolution: 0.1° |
|
Harmonic |
superposition orders: 1~20(PC mode), 1~6(local mode) |
distortion: ≤0.5% |
Power Supply
Nominal input voltage |
customized(AC230V/120V±10%,1-phase) |
Nominal frequency |
50/60 Hz |
Rated current |
10A at 230V / 12A at 115V |
Connection |
standard AC socket (IEC 60320) |
Environmental Conditions
Operation temperature |
0 ... +50 °C (+32 ... +122 °F) |
Storage temperature |
-25 ... +70 °C (-13 ... +158 °F) |
Humidity range |
relative humidity 5 ... 95 %, non-condensing |
Vibration |
IEC 60068-2-6(20m/s2 at 10 ... 150 Hz) |
Miscellaneous
Weight |
19.7kg(43.43 lb) |
Dimensions (W x H x D, without handle) |
400×300×180mm(15.75x11.81x7.09 in) |
Connection port |
for PC connection |
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