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The Megger LTW315 Loop Resistance Tester, part of the LTW300 series, is a portable instrument designed for measuring the contact resistance of switches, circuit breakers, busbars, and other equipment in power systems. Its core function is to detect excessive loop resistance and prevent equipment failures caused by overheating due to poor contact.
| Parameter | Value |
|---|---|
| Model | LTW315 |
| Test Type | Loop Impedance Tester |
| Test Principle | Two-wire non-tripping loop test |
| Voltage Measurement Range (AC only) | 50 V to 440 V |
| Voltage Measurement Accuracy | ±2% ± 1 V |
| Frequency Measurement Range | 25 Hz to 99.99 Hz |
| Frequency Measurement Accuracy | ±0.1 Hz |
| No-trip Loop and High Current Loop Test Source Voltage | 100 V to 280 V (49 Hz to 50.1 Hz) |
| Loop Impedance Display Range | 0.01 to 2000 Ω |
| Loop Testing Accuracy at 230 V AC | ±5% ± 0.03 Ω |
| Loop Testing Accuracy at 100 V and 280 V AC | ±10% ± 0.03 Ω |
| No-trip Loop Test Nominal Current | 15 mA (at nominal 230 V AC supply) |
| High Current Loop Test Current | 4 A (at nominal 230 V AC supply) |
| En 61557 Operational Range | 0.30 to 1000 Ω |
| Prospective Fault Current (PFC) Maximum Range | 20 kA |
| Safety Standard | IEC 61010 |
| Safety Category | CAT IV 300 V |
| Display Type | LCD |
| Battery Type | AA |
| Battery Life | 2000 tests |
| Operational Temperature Range | -10 °C to +50 °C |
| Storage Temperature Range | -25 °C to +70 °C |
| Operating Humidity | 90% R.H. non-condensing at +40 °C max. |
| Maximum Altitude | 2000 m |
| Dust and Water Ingress Protection | IP54 |
| Dimensions | 78 x 203 x 148mm |
| Weight | 1000g |
| Model Series | Model Details & Capabilities |
|---|---|
| LTW315 |
Two-wire loop impedance measurement • Two-wire non-trip loop tester • 50 V to 440 V operation • 110 V center-tap loop test • CAT IV installation test • Auto-start operation • 0.01 Ω resolution |
Delivery information typically includes delivery times, shipping methods, packaging, etc., which may vary depending on the seller and the location of purchase.
