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ETCR 3520 insulation tester with colour touchscreen

ETCR

ETCR 3520 5KV High Voltage Insulation Tester Megohm Meter 10T 7mA electrical system tool

SKU CH-5QX7-9RSWS

Tests insulation up to 5 kV with IR, PI, DAR, STEP, RAMP, DD, capacitance and AC/DC voltage modes, plus automatic discharge and live-voltage lockout at 36 V

Size ETCR3520

  • Tests up to 5 kV for high-voltage equipment
  • Touch colour screen shows live data and history
  • Anti-interference tech keeps readings stable on long cables
  • Auto discharge clears charge after each test
  • Voltage guard stops testing above 36 V for safety

High-Voltage Insulation Tester for Substation

The ETCR 3520 is a new 5 kV megohm meter built for insulation resistance, polarisation index, dielectric absorption ratio, step, ramp and dielectric discharge tests on cables, motors, transformers and switchgear. A colour touchscreen shows live results and history on one display. It suits engineers who need a single instrument for comprehensive high-voltage diagnostics.

Sustained Testing in High-Capacitance

Unique anti-interference technology keeps readings stable on long cables and inside substations where electromagnetic noise is strong. Voltage monitoring blocks the test automatically if live voltage exceeds 36 V, protecting both the operator and the unit. Current, temperature and humidity are tracked continuously during extended test sequences.

Touchscreen Operation with Automatic Discharge

The colour touchscreen lets users set custom test voltages, durations and PI or DAR formulas without external controls. After each measurement the instrument discharges the test object automatically, removing the need for a separate discharge circuit. This integration reduces setup time and improves safety during repetitive field work.

How it compares

Measured against everything we stock in Multimeters & Electrical Testers, at today’s prices. Recalculated every night.

Price $1,014.99
Pricier than about 95% of the 971 comparable items (median $30.99).

Specifications

No published specifications for this item yet.

Other versions of this model

2 more in the same range

Questions about this item

How much current does the ETCR 3520 draw during a full-day testing session?

The tester supplies up to 7mA test current and automatically monitors the circuit current on its colour touchscreen, so you can observe real-time draw while it runs continuously.

What leads or accessories must I already have to operate the ETCR 3520?

The unit provides automatic discharge after each test, removing the need for an external discharge circuit; only standard high-voltage test leads rated for 5kV are required to connect to the equipment under test.

Will the ETCR 3520 safely test insulation on older switchgear that may still hold residual voltage?

Yes — it monitors live voltage on the device under test and blocks testing automatically if voltage exceeds 36V, protecting both the instrument and the operator when working with legacy gear.

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