Kyoritsu 4140 LOOP/PFC/PSC Tester

Key Features:

  1. Loop Impedance Testing – Measures the earth fault loop impedance, ensuring that protective devices such as circuit breakers will operate correctly during faults.
  2. PFC and PSC Testing – Accurately measures the prospective fault current (PFC) and prospective short-circuit current (PSC) to ensure the electrical system can safely handle fault conditions.
  3. Advanced Fault Detection – Provides accurate readings to detect potential fault points, ensuring that the electrical system is functioning properly and can handle fault currents without issues.
  4. Large Digital Display – The tester features a clear, easy-to-read digital display that shows measurement results, helping technicians quickly assess the status of the system.
  5. One-Touch Operation – Simplifies the testing process, providing quick results with minimal setup time, which increases productivity in the field.
  6. Auto-Ranging – Automatically adjusts the measurement range to ensure the most accurate readings, regardless of the test parameters.
  7. Compact and Portable – Designed for on-the-go testing, the lightweight and portable design makes it easy to carry and use in the field.
  8. Safety Features – Equipped with built-in protection to avoid errors and ensure safe operation during tests.
  9. Multiple Testing Functions – Offers several test modes to measure loop impedance, PFC, and PSC, providing comprehensive testing in one device.

Kyoritsu KEW 4140 is a high-performance Loop/PFC/PSC Tester designed for measuring loop impedance, prospective fault current (PFC), and prospective short-circuit current (PSC) in electrical systems. This tester is crucial for ensuring the safe and efficient operation of electrical circuits, helping electricians and technicians verify that safety protection devices will function correctly during faults.

Specification

Loop Impedance

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)
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

PFC (L-PE) / PSC (L-N / L-L) *2

Function PFC PFC (ATT) PSC
Rated Voltage 230V (50/60Hz) L-N: 230V (50/60Hz)
L-L: 400V (50/60Hz)
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

Operating Voltage 50 to 500V, 45 to 65Hz
Remarks Correct phase sequence: displayed “1.2.3” and  mark
Reversed phase sequence: displayed “3.2.1” and  mark

Volts

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)
Power source 1.5V AA batteries × 6
*Use of alkaline batteries (LR6) is recommended.
Dimension 84 (L) × 184 (W) × 133 (D) mm
Weight Approx. 860g (including batteries)

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