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The Kingsine KFA320 protection relay tester has been designed with a compact interior, similar in size to an iPad, and is powered by replaceable batteries. It weighs only 3.8 kg and offers 4x300V and 6x20A outputs. Its maximum current can reach 60A, and the output power reaches 200VA/Phase.
Additionally, the Kingsine KFA320 supports IEC61850 SV/GOOSE, LPIT simulation, energy meter testing, low-level output, and transducer calibration.
Its compact design enhances engineers' work efficiency while meeting complex testing requirements.
1. The world's smallest relay tester with 10.1-inch LED touch screen, easy to carry in a iPad size, 3.8kg, high current up to 60A, can continuously output with 3x10A conditions.
2. Extremely simple design for its internal structure, ensure high quality and reliability.
3. Innovative “Plug and Play” technology enable after-sales service very easy and efficient within 20 working days.
4. Class 0.05 High precision output, can be used as a standard source.
5. Main Functions:
Fully function KRT software for test management, graphical test modules, template organized, Xrio/Rio import/export, testing result review, auto result assessment and report generate, etc.
Transient play back up to 3KHz
3x100 + 1x1000Mbit Fiber port for IEC61850 SMV and GOOSE simulations
Inbuilt GPS , IRIG-B and IEEE-1588 synchronized end-to-end testing capability
4 binary input, dry contacts or 9-300V potential contacts capability; 2 fast + 2 relay binary outputs.
Anti-clipping detect, wrong wiring connect alarm and self-protect, overload and overheat protection
2x47.52Wh in-built battery, convenient for both air check and travel.
3-Year free warranty and life-long maintenance
Free software upgrade
6. Learn more about the testing software designed for user-friendliness, multifunctional, and cost-effectiveness.
7. Stay ready for any test with our waterproof All-in-one Bag, designed for engineers to carry KFA series mini testers, cable packs, laptops, and tools—engineered for mobility.
AC Voltage Outputs | |
Source Channels | 4 × 300 V ac (L-N) |
AC voltage output power | 35 VA max each@300V |
| 28 VA max each@3x300V | |
23 VA max each@200V | |
12 VA max each@100V | |
7 VA max each@63.5V | |
6.65 VA max each@57.7V | |
1.1 VA max each@10V | |
Accuracy | <0.015%Rd+0.005%Rg Typ. |
Resolution | 0.001V |
DC Offset | <5mV Typ. |
Distortion | <0.05% Typ. / <0.1% Guar. |
Rising/Falling response | <100us |
DC Voltage Outputs | |
Source Channels | 4 |
DC voltage output range | 0~300 V (L-N) |
DC voltage output power | 40W Max |
DC voltage accuracy | <0.03%Rd+0.01%Rg Typ. |
Rising/Falling response | <100us |
Resolution | 1mV |
AC Current Outputs | |
Source Channels | 6 |
AC current output range | 6 x 0~20A, L-N |
3 x 0~40A, LL-N | |
1 x 0~60A, LLL-N | |
AC current output power (Max) | 180VA Max for 20A L-N |
AC current output accuracy | <0.015%Rd+0.01%Rg Typ. |
DC Offset | <1mA Typ. |
Distortion | <0.05% Typ. / <0.1% Guar. |
Rising/Falling response | <100us |
Resolution | 1mA |
DC Current Outputs | |
Source Channels | 3 |
DC current output range | 0~10A, L-N |
DC current output power | 145W |
DC current accuracy | <0.03%Rd+0.01%Rg Typ. |
Rising/Falling response | <100us |
Resolution | 1mA |
AC Frequency | |
Range sine signals | DC, 10 ~ 1000Hz, 3000Hz transient |
Output accuracy | ±5ppm |
Resolution | 0.001Hz |
Phase | |
Output range | -360°~360° |
50Hz output accuracy | ±0.1° Typ. / <0.2° Guar. |
Resolution | 0.001° |
| Binary Input And Time Accuracy | |
Binary input logarithm | 4 pairs |
Trigger mode | Dry/Wet contact |
Input voltage range | 0V～300Vdc |
Timing accuracy | < ±1ms @ 0.001~1s |
Timing resolution | 36us |
Max time limit | infinity |
Binary Output (Relay Contacts) | |
Binary output pairs | 2 pairs（DO-1 and DO-2） |
Type | Potential free relay contacts, software controlled |
Break capacity AC | Vmax：380V（AC）/ Imax：8A/Pmax: 2000VA |
Break capacity DC | Vmax：240V（DC）/ Imax：5A/Pmax: 150W |
Response time | ≤10 ms |
Binary Output (Fast eSSR) | |
Binary output pairs | 2 pairs（DO-3 and DO-4） |
Circuit Breaker Simulate | Can be define as Open or Close status |
Break capacity AC | Vmax：250V（AC）/ Imax：0.2A |
Break capacity DC | Vmax：250V（DC）/ Imax：0.5A |
Response time | <100us |
Contact performance | Open the dry contact output using opto-coupler relay, the on-resistance is ≤ 6Ω, and the shut-off withstand voltage is ≥DC300V |
Time Synchronization (Time accuracy) | |
GPS / BD | Yes, <1us |
IRIG-B | Yes, <1us |
| IEEE-1588 | Yes |
Power Charger | |
Rated power supply | 100~240Vac,1-phase |
| Rated input frequency | 50 Hz/60 Hz |
| Charger output | >65W, compatible with QD3.0 or PD3.0, supporting single-port output of 20V × 3.25A |
Inbuilt Battery | |
Nominal Volume | 10.8V, 2x47.52Wh (5000mAh) |
Operating Temperature | Charge: 0 to 45°C (Ambient) Discharge: -20 to 60°C (Ambient) |
Charge time (0-80%) | 2h |
Charge time (0-100%) | 4h |
Interface Port | |
RJ45 Ethernet | 1 port, 10/100M |
USB | USB2.0 x 1 |
Wifi | Inbuilt 2.4GHz wifi |
Operation Control | |
Touch Screen & Host Control | Yes, 10.1" LCD |
Basic PC software | Support |
Advance PC software | Support |
Other Information | |
Weight | 3.8kg |
Dimensions (W x D x H) | 288x185x95 (mm) |
Item | Standard | Optional |
IEC61850 SV and GOOSE | None | Optional support |
Low-Level Output | None | Extend Optional support |
Energy Meter Calibration | None | Optional support |
Auxiliary DC Supply | None | Extend Optional support |
Low-Level Outputs（Extend Optional） | |
Number of outputs | 10 |
Setting range | 0~8Vrms |
Max. output current | Rating 2mA, 10mA transient max. |
Accuracy | (0.01~0.8 Vrms): |
Resolution | 250 μV |
Distortion (THD+N) | < 0.05% Typ. / <0.1% Guar. |
Connection interface | Combination terminal |
Energy Meter Calibration (Optional) | |
Sensor Usage | Mechanical meters / Electronic meters |
Pulse Input | 1 pulse input port, 5Vdc high level valid only. |
Pulse Range | 500KHz pulse input Max. |
IEC61850 SV and GOOSE (Optional) | |
LC Type | 4 x 100 Base-Fx (100Mbit, full duplex) wave-length 1310nm |
ST Type | 2 transmitting, 2 receiving wave-length 850nm |
| Auxiliary DC supply (Extend Optional) | |
| Output Range | 12~350V |
| Output Power | 40W max |
| Accuracy | ±2V @12-100Vdc; ±2% @100-350Vdc |
