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 |
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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 mark Reversed phase sequence: displayed “3.2.1” and mark |
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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) |
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