Digital Insulation Resistance Tester ETCR3500B/3520B/C Megohmmeter, 5000 V High Voltage, 10 kV

ETCR3500 Technical Specifications

Model: ETCR3500

Power Supply: Rechargeable lithium-ion battery pack, 5.2Ah, 14.8V

Rated Voltage Ranges: 50V, 250V, 500V, 1000V, 2500V, 5000V

Output Voltage Accuracy: (5%–10%) ±10V

Insulation Resistance Range: 0.005 MΩ–5.00 TΩ

Short-Circuit Current: 5 mA MAX

Voltage Measurement: Range: 0 V–1000 V; Accuracy: ±5% of reading ±3 V

Custom Output Voltage: 40 V–5 kV

Custom Test Duration: 10 seconds–3600 seconds

Polarization Index (PI): Yes

Dissipation Ratio (DAR): Yes

Step (STEP): Yes

Ramp (RAMP): Yes

Real-time Current Display: Displays test current value; current display range: 0.001 nA to 5 mA

Real-time Voltage Display: Monitors test terminal voltage in real time; testing is prohibited when the voltage exceeds 36 V in non-test mode to protect the instrument and operator safety.

Test Timer: Automatically records test duration; timing range: 0 s to 9999 s

Storage Function: Automatically stores 1,000 sets of test data; saved test records can be displayed and played back on the device.

USB Communication: Yes; test records can be transferred to a PC via a USB cable.

Bluetooth Communication: Yes, can connect to Android phones or other devices with Bluetooth functionality.

Battery Level Indicator: Displays battery level and alerts the user to recharge when the battery voltage is low.

Auto-Shutdown Function: Automatically shuts down 15 minutes after startup.

Instrument Dimensions: Approx. 280 mm × 260 mm × 160 mm

Instrument Weight: Main unit: approx. 3344g (including battery); Total weight: approx. 5.6kg (including accessories)

Protection Rating: IP65 with cover closed; IP40 with cover open

Operating Environment: -20°C to 50°C; 80% RH

Withstand Voltage: AC 3kV 50Hz for 1 minute (between test leads and enclosure)

Compliant Standards: IEC 61010-1, IEC 61326-1

Included Accessories: Main unit: 1; High-voltage test lead (red): 1; Test lead (green): 1; Test lead (black): 1; Alligator clip: 1; Hook: 1; Power adapter: 1; USB communication cable: 1; Tool kit: 1