What's the accuracy of this insulation resistance tester?

Base on their manual, it says 1m～200m ohm: +/- 3.0%+5, 200m～10g ohm: +/- 5.0%+5, 10g～200g ohm:+/- 10.0%+5

For the BT6688B insulation resistance tester, what is the test current for resistance measurements at rated voltages?

Do you mean what is the maximum current it can push if the resistance is very low? If not, the answer to this question will vary depending on which voltage setting you use and the resistance of the system you are testing. If for example, you test using the 1000v setting on a cable that has 2G-OHM resistance, the current is 1000 / 2,000,000,000 = .5 uA.

Can it measure polarization index measurement (pi) and dielectric absorption ratio measurement (dar)?

Yes, Both require a megaohmmeter, You just have to follow the correct sequence /procedure

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BTMETER BT-6688B Megohmmeter 200 Gig Ohm Digital Insulation Resistance Tester, 500V/1kV/2.5kV/5kV Test Voltage, Auto Ranging, Backlight Display

Product ID: 66364272

Details

Brand
BTMETER
Color
BT-6688B
Item Weight
900 g
Power Source
Battery
Style
BT-6688B

⚡Up to 5kV test voltage

📊0.1MΩ to 200GΩ range with ±3% accuracy

🔋Battery powered with auto-ranging & backlight

R2551

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Description

⚡ Empower your diagnostics with precision and power!

ULTRA WIDE RESISTANCE RANGE - Measure insulation resistance from 0.1MΩ up to a staggering 200GΩ with professional-grade ±3% accuracy.
24 7 EXPERT SUPPORT INCLUDED - Gain peace of mind with fast, professional tech support whenever you need it—because your work deserves no downtime.
POWERFUL VOLTAGE FLEXIBILITY - Select from 100V to 5000V for precise insulation testing across all your high-voltage equipment.
BUILT FOR SAFETY DURABILITY - IEC-1010 double insulation and anti-fall protective case ensure reliable, safe operation in demanding environments.
SMART AUTO RANGING BACKLIT DISPLAY - Effortlessly get accurate readings in any lighting condition with intuitive auto-ranging and a clear backlight screen.

The BTMETER BT-6688B Megohmmeter is a professional-grade digital insulation resistance tester offering a massive 0.1MΩ to 200GΩ measurement range and selectable test voltages from 100V up to 5000V. Featuring auto-ranging, a backlit display, and robust safety standards (IEC-1010), it’s designed for reliable, accurate testing of transformers, motors, cables, and other high-voltage electrical equipment. Lightweight and battery powered, it comes with a protective case and 24/7 expert support, making it an essential tool for electrical professionals demanding precision and durability.

Specifications

ASIN	B07C2SSH51
Best Sellers Rank	#70,920 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #13 in Insulation Resistance Meters
Brand Name	BTMETER
Color	BT-6688B (1MΩ-200GΩ)
Customer Reviews	4.1 4.1 out of 5 stars (201)
Included Components	1* User manual, 1* BT-6688B Megohmmeter
Item Dimensions	10.4 x 9.2 x 3.5 inches
Item Weight	900 g
Manufacturer	BTMETER
Measurement Type	Ohmmeter, Voltmeter
Minimum Operating Voltage	100 volts
Model	BT-6688B
Number of Items	1
Part Number	BT-6688B
Power Source	Battery Powered
Specification Met	IEC 1010
Style Name	BT-6688B
UPC	703546921777
Warranty Description	1 year

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R2551

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Africa.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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