S1-568/2-US Expert 5 kV Insulation Resistance Tester

S1-568/2-US Expert 5 kV Insulation Resistance Tester.

The Megger range of 5 / 10 / 15 kV DC insulation resistance testers is built around a 'no compromise' approach to safety, rugged dependability, and decades of accuracy and reliability across power generation, transmission, and distribution. The full-color custom display delivers a wide viewing angle in extreme environments, and a dual-case design (tough outer plus fire-retardant inner) protects the instrument while keeping leads stowed in velcro lid pouches.

The S1-568/2-US delivers 5 kV maximum test voltage with measurement from 10 kΩ – 15 TΩ. Preset test voltages: 250 V, 500 V, 1000 V, 2500 V, 5000 V; user-defined lock voltage adjustable across 40 V – 5 kV in 10 V / 25 V steps. Accuracy is ±5 % to 1 TΩ at 5 kV (extending to ±20 % at higher TΩ values). Capacitor discharge: <120 ms/µF from 5 kV to 50 V.

The Expert range combines all Advanced test capability with Megger's most sophisticated noise rejection — adaptive filter, averaging filter, 8 mA noise current immunity (rated for EHV environments up to 1000 kV) — plus full remote control via USB cable for hands-off operation in switch yards and during factory automation. PDC, Ramp, SV, DD, IR, IR(t), DAR, PI, PI Predictor (PIp), and RE>Act test modes are all included. Charge current is finely selectable in six steps (1, 2, 3, 4, 5, 6 mA), with 6 mA available from both internal battery AND mains supply.

Safety-rated CAT IV 600 V to 3000 m with five-level voltage-warning system, hazardous peak voltage detection during IR measurement, and lockable HV plugs with non-removable test clips; IP65 case-closed / IP40 lid-open; –20 °C to +50 °C operating; 4.5 kg (9.9 lbs). Onboard time-stamped storage records temperature AND humidity per test (11 hours at 5 sec intervals). USB Type B and Bluetooth Class 2 for both result transfer and 1 Hz live streaming. Remote control via USB cable. CertSuite Asset Lite included FREE; full CertSuite Asset and PowerDB Pro/Advanced supported.

Applications span manufacturing QC and pre-shipment benchmark testing, on-site commissioning, predictive maintenance, and post-repair verification across cables, power transformers, measurement transformers, circuit breakers, motors, generators, and bushings — in production-line, construction-site, industrial, distribution, and transmission environments. Powered by 5.2 Ah Li-ion battery or 90–264 V AC mains; 30-minute quick-charge yields ~1 hour operation.

The Megger S1-568/2-US Expert 5 kV Insulation Resistance Tester # 1016-106 is manufactured by Megger. Valley Instrument Service is an authorized Megger dealer offering full sales support, NIST-traceable calibration, and expert technical assistance.