Megger DLRO100 Test Lead

This lead‑and‑connector kit is engineered to pair with Megger’s DLRO100‑series digital low‑resistance ohmmeters, to enable precise four‑terminal (Kelvin) measurement under high‑current conditions. The leads are rated to carry up to 100 A continuously, enabling micro‑ohm measurements on hard‑to‑reach or high‑current contact points such as circuit breakers, busbar joints, and bonding connections. The cable set uses silicone‑insulated heavy‑gauge copper conductors for minimal added resistance and durability in field conditions. The clamps feature expandability (jaw opening ~75 mm) for flexible attachment to varied test surfaces, especially narrow gaps. Safety‑wise the leads meet CAT IV‑600 V/500 VDC classification (when used with compatible DLRO unit) and are designed for use in the demanding industrial, utility, and heavy‑manufacturing environments. With a 5 m standard length (other lengths optionally offered), the set allows the tester to remain at a safe distance while making connections, and the durable lead insulation and connectors help resist abrasion, deformation, and the rigours of on‑site use. The kit enables both manual and automatic test modes, integrating clean connection indication (LEDs for current and potential circuits) and low‑resistance measurement down to micro‑ohms with high repeatability, supporting preventative maintenance, installation commissioning and trouble‑shooting of critical electrical infrastructure.

Features

• Heavy‑duty Kelvin‑clamp current leads rated for up to 100 A continuous when paired with compatible equipment.

• Expandable clamp jaws (≈ 75 mm opening) to accommodate narrow or awkward test‑object geometries.

• Four‑wire (Kelvin) configuration: two clamps for current feed (C1‑C2) and two potential leads (P1‑P2) for accurate low‑resistance reading.

• Silicone‑insulated, flexible, heavy‑gauge cables, optimized to keep added lead resistance minimal and resist field abuse.

• Safety rating to CAT IV 600 V / 500 V DC (depending on system configuration) for connection into high‑energy switchgear environments.

• Standard 5 m length (with options for 10 m or 15 m in related accessory sets) so the instrument can be placed at a safe distance from the test point.

• Rugged build intended for harsh industrial, utility or manufacturing sites (switchgear rooms, substations, mines).

• Compatible with smooth‑DC output instruments intended for contact resistance measurement (e.g., breaker testing), to avoid false tripping on parallel circuits.

• Designed for narrow‑gap use‑cases: ideal where standard leads are too wide/ bulky to reach test surfaces.

• Clear LED indicators (on compatible meters) show continuity of both current and potential circuits, aiding in connection verification before test initiation.

Includes

• Megger DLRO100 Test Lead