---
product_id: 66364272
title: "BT-6688B Megohmmeter 200 Gig Ohm Digital Insulation Resistance Tester, 500V/1kV/2.5kV/5kV Test Voltage, Auto Ranging, Backlight Display"
brand: "btmeter"
price: "€ 137.72"
currency: EUR
in_stock: true
url: https://www.desertcart.fi/products/66364272-bt-6688b-megohmmeter-200-gig-ohm-digital-insulation-resistance-tester
store_origin: FI
region: Finland
---

# 5kV test voltage 200GΩ max resistance IEC-1010 safety rated BT-6688B Megohmmeter 200 Gig Ohm Digital Insulation Resistance Tester, 500V/1kV/2.5kV/5kV Test Voltage, Auto Ranging, Backlight Display

**Brand:** btmeter
**Price:** € 137.72
**Availability:** ✅ In Stock

## Summary

> 🔍 Unleash the Power of Precision Testing!

## Quick Answers

- **What is this?** BT-6688B Megohmmeter 200 Gig Ohm Digital Insulation Resistance Tester, 500V/1kV/2.5kV/5kV Test Voltage, Auto Ranging, Backlight Display by btmeter
- **How much does it cost?** € 137.72 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/66364272-bt-6688b-megohmmeter-200-gig-ohm-digital-insulation-resistance-tester)

## Best For

- btmeter enthusiasts

## Why This Product

- Trusted btmeter brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Safety First:** Designed with IEC-1010 double insulation for peace of mind.
- • **Worry-Free Warranty:** Enjoy a 2-year quality warranty for ultimate confidence.
- • **High Voltage Capability:** Measure AC high voltages from 1V to 750V effortlessly.
- • **Versatile Voltage Selection:** Choose from 100V to 5000V for tailored testing needs.
- • **Precision at Your Fingertips:** Experience accuracy within 3%~10% with a 5-digit display.

## Overview

The BTMETER BT-6688B Megohmmeter is a cutting-edge digital insulation resistance tester that measures high insulation resistance up to 200 Gig Ohms with selectable test voltages ranging from 100V to 5000V. It features a user-friendly backlight display, robust safety standards, and a 2-year warranty, making it an essential tool for professionals in electrical testing.

## Description

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

## Features

- ✅【High Insulation Resistance Tester】Digital Autoranging Megohmeter measures high insulation resistance 0.1M～200G ohms with accuracy 3%~10% + 5 digits.
- ✅【Wider Testing Voltage】The output testing voltage can be selected from 100V/250V/500V/1000V/2500V/5000V. This Insulation Resistance Tester comes with a non-slip and anti-fall protective case which is insulative.
- ✅【Safe and Reliable Mega Ohmmeter】 IEC-1010 double insulation, overvoltage category Ⅱ safety standard rated. During any rated voltage measurement, if the measured resistance is less than 5M ohms, the measurement time should not exceed 10 seconds.
- ✅【Electric Insulativity Test Checker】 This Megohm meter can also measures AC high volt 1V~750V, Frequency Range:40Hz~400Hz,with high voltage measurement LED warning.Ideal for measuring insulation resistance in high-voltage electrical equipment, electricity wiring cable
- ✅【2 YEARS QUALITY WARRANTY】BT-6688B 1999 Counts Megameter suitable for measuring the insulation resistance of various electrical equipment and insulating materials such as transformers, motors, cables, switches, electrical appliances, etc. Backed for 1 year warranty for worry-free purchase!

## Product Details

- **Brand:** BTMETER
- **Power Source:** Battery Powered
- **Style:** BT-6688B
- **Color:** BT-6688B (1MΩ-200GΩ)
- **Item Weight:** 900 Grams

## Images

![BT-6688B Megohmmeter 200 Gig Ohm Digital Insulation Resistance Tester, 500V/1kV/2.5kV/5kV Test Voltage, Auto Ranging, Backlight Display - Image 1](https://m.media-amazon.com/images/I/71hs92+TKjL.jpg)

## Available Options

This product comes in different **Color** options.

## Questions & Answers

**Q: What's the accuracy of this insulation resistance tester?**
A: Base on their manual, it says 1m～200m ohm: +/- 3.0%+5, 200m～10g ohm: +/-  5.0%+5, 10g～200g ohm:+/-  10.0%+5

**Q: Will this measure (readout) breakdown voltage?**
A: It does it to a limited amount

**Q: For the BT6688B insulation resistance tester, what is the test current for resistance measurements at rated voltages?**
A: 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.

**Q: Can it  measure polarization index measurement (pi) and dielectric absorption ratio measurement (dar)?**
A: Yes, Both require a megaohmmeter, 
You just have to follow the correct  sequence /procedure

## Frequently Bought Together

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-02-10*