The digital programmable leakage current tester equipped with a non-compliance detection function, audio-visual alarm, and automatic test time control, meeting the needs of production lines and quality inspection.
Testing Functions and Technical Configuration
User Interface and Operational Convenience
The application field of the digital leakage current tester is extensive and includes various categories of electrical devices. It is suitable for household appliances such as TV sets, refrigerators, air conditioners, washing machines, dehumidifiers, electric blankets, and chargers. In the realm of instrumentation, it can be used with oscilloscopes, signal generators, DC power supplies, switching power supplies, and other complete machines. The tester is also applicable to lighting appliances, including ballasts, road lights, stage lights, portable lights, and other lamps. Furthermore, it is useful for electric heating appliances, such as electric drills, pistol drills, gas cutting machines, grinding machines, and electric welding machines. Finally, it can be employed with various motors, including rotating motors, ensuring safety and reliability across these diverse applications.
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Model | RK9950 (Passive) | RK9950B | RK9950CÂ | |
Basic Functions | Screen Size | 5-inch TFT LCD screen | ||
Number Key | Parameter setting digital input | |||
Coding Switch | Parameter selection and confirmation function | |||
Up, Down, Left And Right Function Keys | Parameter setting up and down selection function | |||
Locking Function | Prevent accidental modification of test conditions or prohibit modification of test conditions | |||
Alarm Function | Voice alarm | |||
Communication Interface | RS232CăRS485ăUSB | |||
USB Interface | Copy and storage functions | |||
Control Interface | HANDLER (PLC) | |||
Test Method | Dynamic, static | |||
Load Voltage (AC) | Range | 0-300V | ||
Accuracy | ± (2% Ădisplay value +0.5V) | |||
Frequency | 50/60Hz | |||
Load Current (AC) | 25A | |||
Over Current Protection | Sound and light alarm, cut off the load output | |||
Leakage Current Setting | Upper Limit Setting | |||
Range | 0.001-20.00mA | |||
Resolution | ïŒ10mA, 0.001/Step, ïŒ10mA, 0.01mA/Step | |||
Lower Limit Setting | ||||
Range | 0.000-20.00mA | |||
Resolution | ïŒ10mA, 0.001/Step, ïŒ10mA, 0.01mA/Step | |||
Explanation | The lower limit is set to 0 without judgment | |||
Leakage Current Measurement | Range And Accuracy | 0.001-0.050mA, DC-10KHz | ± (5% à Display Value + 5 Words) | |
0.050-20.00mA, DC-10KHz | ± (2% à Display Value + 2 Words) | |||
0.050-20.00mA, 10KHz-1MHz | ± (5% à Display Value + 5 Words) | |||
MD Simulated Human Network | 8 Standard Networks | MD-A (GB/T12113-2003, GB4793.1-2007), MD-B B1 (GB/T12113-2003, GB4793.1-2007, GB4706.1-2005, GB4943.1-2011, GB8898-2011, GB7000.1-2015), MD-C (GB/T12113-2003, GB7000.1-2015), MD-D (GB4793.1-2007), MD-E (GB4943.1-2011, GB4793.1-2007), MD-F (IEC60598-1:2014, GB4793.1-2007), MD-G (GB4943.1-2011, IEC60950-1:2005, GB4793.1-2007, IEC61010-1:2001) | ||
Test Time | Range | Single timing test: 0.1-999s ± 1%; closing time is continuous test | ||
Explanation | When setting 0s test, only N-Wire is tested, No L conversion | |||
Output Power | Passive | 1000VA | Three phase passive | |
External Power Supply | External connection | Built in | External connection | |
General Technical Index | ||||
Working Temperature And Humidity | 0â-40â, â€75%RH | |||
Power Supply | 100V-121V, 198V-242V, 47.5-63Hz, 5A 250V | |||
Fuse Size | 50A 250V, 10A 110V | |||
External Volume (DĂHĂW) | 430mmĂ105mmĂ350mm | |||
Weight | 13kg | 18kg | 14kg |
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Q1: What is a normal leakage current?
A1: Normal leakage current varies depending on the type of electrical equipment and its application, but generally, it should be minimal and within safe limits. For most household appliances, a leakage current of up to 0.5 mA is considered acceptable, while for medical devices, the limit can be as low as 10 ”A. In industrial settings, the acceptable range can differ based on specific standards, but values typically range from 0.5 mA to 3.5 mA. Any leakage current significantly above these thresholds may indicate insulation failure or other electrical faults, posing safety risks and necessitating immediate inspection and remediation. Regular testing and monitoring are essential to ensure that leakage currents remain within safe limits to protect both equipment and users.
Q2: What are the types of leakage current?
A2: There are several types of leakage current that can occur in electrical systems, each arising from different causes and posing varying risks. Capacitive leakage current is caused by capacitive coupling between live conductors and nearby conductive surfaces, often seen in insulated cables and can increase with voltage. Conductive leakage current results from moisture, dust, or other contaminants that create a conductive path on the surface of insulation materials, leading to unintentional current flow. Inductive leakage current occurs due to electromagnetic induction, where nearby magnetic fields influence current flow in unconnected circuits. Ground leakage current refers to the current that flows through the ground conductor, often resulting from insulation breakdown or equipment faults. Understanding these types is crucial for implementing appropriate safety measures and ensuring the reliable operation of electrical equipment.
Q3: How to solve leakage current?
A3: To effectively solve leakage current issues, the first step is to conduct a thorough inspection and testing of the electrical system to identify the source of the leakage. This includes checking for damaged insulation, loose connections, and moisture ingress. Once identified, repair or replace faulty components such as cables, connectors, or insulation materials to eliminate the path for leakage current. Implementing proper grounding techniques can also help divert unwanted current safely away from equipment and users. Additionally, using residual current devices (RCDs) or ground fault circuit interrupters (GFCIs) can provide added protection by quickly disconnecting the circuit when leakage current exceeds safe limits. Regular maintenance and monitoring through periodic testing can help prevent future leakage currents and ensure the safety and reliability of the electrical system.
Tips: How to maintain your digital leakage current analyzer?
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