KYORITSU LOOP/PFC/PSC TESTER KEW 4140
- Anti-Trip Technology: Yes, for RCDs
- Display: Dual for simultaneous measurements
- Test Current: High and low current ranges
- Safety Rating: IP54, CAT III 300V
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Description
Unrivaled Loop Testing with Anti-Trip Technology
In the demanding world of electrical installation and maintenance, a tool’s ability to perform critical tests without causing disruptions is a major advantage. This instrument, with its Anti-Trip Technology (ATT), is specifically designed to perform complete, trip-free loop testing on all RCDs rated 30mA and above. This innovative feature saves significant time and effort by preventing unnecessary power outages during testing, a common issue with traditional loop testers. By enabling technicians to conduct comprehensive diagnostics without interrupting the circuit, this device proves to be an indispensable asset for ensuring safety and compliance in modern electrical systems. The ATT function, therefore, not only enhances efficiency but also provides a more accurate and reliable testing experience.
Dual Display for Simultaneous Measurements
Efficiency is a key pillar of this tester’s design. The dual display is a prime example, allowing for the simultaneous measurement of two crucial parameters, such as Loop Impedance and PFC/PSC. This feature eliminates the need to switch between modes, saving valuable time and providing a more holistic view of the circuit’s performance. For instance, a technician can instantly see both the loop impedance and the prospective fault current on a single screen, which is essential for quickly assessing the safety and integrity of an installation. The device also supports a two-wire connection for Loop L-L, L-N, and PSC testing, further simplifying the process and reducing the number of connections required. This smart design makes it a highly efficient and intuitive tool for professionals.
Comprehensive Loop and PFC/PSC Testing
This instrument is a powerhouse when it comes to loop impedance and prospective fault/short circuit current (PFC/PSC) testing. It offers various modes, including L-PE ATT OFF, L-PE ATT ON, and L-N / L-L, allowing it to adapt to different testing scenarios. The operating voltage range is wide, from 100V to 500V, and the auto-ranging feature simplifies the measurement process across different impedance ranges (20/200/2000Ω). For PFC/PSC, the tester can measure up to 20kA, a critical parameter for verifying that protective devices are correctly rated. The high-level accuracy of the measurements, combined with the detailed test current parameters, ensures that technicians can confidently assess the safety and compliance of any electrical circuit.
Specialized Applications for Electrical Diagnostics
The versatility of this tester makes it a valuable tool for a wide range of specialized applications. It is essential for electricians and maintenance technicians who need to perform quick and accurate diagnostics on new installations and existing systems. The ATT function is particularly useful for testing circuits with sensitive RCDs, such as those found in medical facilities or data centers. The dual display and the ability to measure PFC/PSC simultaneously make it perfect for electrical inspectors who must certify that installations meet safety standards. Furthermore, the device is capable of measuring phase rotation, voltage, and frequency, which are crucial for troubleshooting three-phase systems and ensuring that motors and other equipment are running correctly.
Built for Convenience and Ease of Use
The user’s experience is paramount in the design of this instrument. The lock-down test button is a great feature that enables “hands-free” testing, allowing the user to maintain a secure grip on the test leads. The auto-start operation further streamlines the process by initiating the test as soon as a valid connection is detected. Both the display and the front panel keyboards are equipped with a backlight, ensuring that the device is fully functional and easy to read even in dark or poorly lit environments. This thoughtful combination of features makes the tester a highly practical and user-friendly tool for professionals working in diverse conditions.
The Importance of Accurate Loop Testing
The loop impedance of an electrical circuit is a fundamental safety parameter. It determines the effectiveness of the protective conductor and ensures that a fault current will be large enough to trip a protective device quickly. An accurate loop impedance measurement is therefore critical for protecting people from electric shock and preventing fires. This tester’s high accuracy and specialized features, like the Anti-Trip Technology, guarantee that technicians can obtain reliable data to confirm that the circuit’s protective measures are functioning as intended. This level of precision is what differentiates a professional-grade tool from a basic one and provides the confidence needed for safety-critical work.
Robust Construction and Adherence to Safety Standards
This tester is built to be both robust and safe. It features an IP54 rating, making it water and dust-proof, a crucial feature for a tool used in the field. It is designed to meet a series of international safety standards, including IEC 61010-1 CAT III 300V (500V L to L), ensuring it is safe for use on distribution circuits. It also complies with IEC 61557, the international standard for electrical safety measuring instruments. The device is powered by six AA batteries, and its compact size and light weight (approx. 860g) make it easy to transport and handle. The included accessories, such as the mains test lead and soft case, ensure that the user has everything they need to get started.
Specifications
Loop Impedance |
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| Function | L-PE ATT OFF | L-PE ATT ON | L-N / L-L | ||||
| Rated Voltage | 230V (50/60Hz) | L-N: 230V (50/60Hz) L-L: 400V (50/60Hz) |
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| Operating Voltage | 100 to 280V (45 to 65Hz) | 100 to 500V (45 to 65Hz) | |||||
| Range (Auto-Ranging) | 20/200/2000Ω | 20/200/2000Ω (L-N<20Ω) | 20Ω | ||||
| Nominal Test Current at 0Ω External Loop: Magnitude/Duration at 230V | 20Ω:6A/20ms 200Ω:3A/20ms 2000Ω:15mA/250ms |
L-N: 6A/60ms N-PE: 10mA/Approx.5s |
20Ω: 6A/20ms | ||||
| Accuracy | ±3%rdg±4dgt *1 | ±3%rdg±6dgt *1 | L-N: ±3%rdg±4dgt L-L: ±3%rdg±8dgt |
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PFC (L-PE) / PSC (L-N / L-L) *2 |
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| Function | PFC | PFC (ATT) | PSC | ||||
| Rated Voltage | 230V (50/60Hz) | L-N: 230V (50/60Hz) L-L: 400V (50/60Hz) |
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| Operating Voltage | 100 to 280V (45 to 65Hz) | 100 to 500V (45 to 65Hz) | |||||
| Range (Auto-Ranging) | 2000A/20kA | 2000A/20kA (L-N<20Ω) | 2000A/20kA | ||||
| Nominal Test Current at 0Ω External Loop: Magnitude/Duration at 230V | 20Ω: 6A/40ms 200Ω: 2A/20ms 2000Ω: 15mA/500ms |
L-N: 6A/60ms N-PE: 10mA/Approx.5s |
20Ω: 6A/20ms | ||||
Phase Rotation |
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| Operating Voltage | 50 to 500V, 45 to 65Hz | ||||||
| Remarks | Correct phase sequence: displayed “1.2.3” and Reversed phase sequence: displayed “3.2.1” and |
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Volts |
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| Function | Volts | Frequency | |||||
| Measuring range | 0 to 500V | 45 to 65Hz | |||||
| Accuracy | ±2%rdg±4dgt | ±0.5%rdg±2dgt | |||||
| Applicable standards | IEC 61010-1 CAT Ⅲ 300V (500V L to L), IEC 61010-031 IEC 61557-1, 3, 7, 10, IEC 60529 (IP54), IEC 61326 (EMC) |
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| Power source | 1.5V AA batteries × 6 *Use of alkaline batteries (LR6) is recommended. |
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| Dimension | 84 (L) × 184 (W) × 133 (D) mm | ||||||
| Weight | Approx. 860g (including batteries) | ||||||
| Accessories | Mains test lead *3 Distribution board test lead *4 9156A (Soft case with shoulder strap) LR6 (Battery) × 6, Instruction manual |
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