---
product_id: 558410029
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: "$U12321"
currency: UYU
in_stock: true
url: https://www.desertcart.uy/products/558410029-bt-6688b-megohmmeter-200-gig-ohm-digital-insulation-resistance-tester
store_origin: UY
region: Uruguay
---

# Up to 5kV test voltage Backlit LCD for low-light use 200 GΩ max resistance range BT-6688B Megohmmeter 200 Gig Ohm Digital Insulation Resistance Tester, 500V/1kV/2.5kV/5kV Test Voltage, Auto Ranging, Backlight Display

**Brand:** btmeter
**Price:** $U12321
**Availability:** ✅ In Stock

## Summary

> ⚡ Empower your diagnostics with precision and clarity!

## 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?** $U12321 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.uy](https://www.desertcart.uy/products/558410029-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

- • **Complete Pro Kit:** Includes test leads, alligator clips, batteries, and a rugged semi-hard case for on-the-go reliability
- • **Precision Power Play:** Choose from 100V to 5kV test voltages for tailored diagnostics
- • **Work Anywhere, Anytime:** Backlit LCD screen ensures clear readings even in dim or dark environments
- • **Smart Visual & Audio Alerts:** Comparator function offers instant pass/fail feedback with sound and display
- • **Ultra-High Resistance Range:** Measure insulation resistance up to a staggering 200 GΩ with confidence

## Overview

The BTMETER BT-6688B is a professional-grade digital insulation resistance tester featuring selectable test voltages up to 5kV, a maximum resistance measurement of 200 GΩ, and a backlit LCD for enhanced visibility. Designed for electrical pros, it includes smart comparator alerts, automatic calibration, and comes complete with accessories and a durable case, making it ideal for testing transformers, motors, cables, and more in any environment.

## Description

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

## Features

- Test Voltage: According to the test purpose, you can choose the test voltage of 100V, 250V, 500V, 1000V, 2500V, 500V, and can measure the maximum resistance range of 200 GΩ, and it can measure AC voltage
- High Quality Insulation Resistance Meter: The comparator function makes it easy to see and hear at a glance. Comes with a semi-hard case and an LCD screen for greater visibility
- Wide Range of Applications: The portable digital insulation resistor meter is used for measuring insulation resistance of various electrical devices, such as transformers, motors, cables and openers, and insulating resistance tests. This meter is your ideal electrical test equipment
- Special Features: Low power consumption CMOS dual product A/D conversion integrated circuit, automatic calibration, automatic polarity display, and over range display. 3 1/2 digit large screen display, maximum reading value is 1999
- Illuminate It: Supports working in dim places, press "Light" to turn on the backlight screen. Test Lead, Alligator Clip, Instruction Manual, 6 Batteries and Insulation Tester Case Included

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | BTMETER |
| Power Source | Corded Electric |
| Style | 6688B |
| Item Weight | 900 Grams |
| Specification Met | IEC 1010 |
| Upper Temperature Rating | 4E+1 Degrees Celsius |
| UPC | 703546921777 |
| Manufacturer | BTMETER |
| Country of Origin | USA |
| Model number | BT-6688B |
| Number of Memory Sticks | 1 |
| Item Weight | 900 g |
| Package Dimensions | 25.7 x 24.3 x 8.8 cm; 900 g |
| Item model number | BT-6688B |
| Are batteries included? | No |

## Product Details

- **Brand:** BTMETER
- **Power Source:** Corded Electric
- **Style:** 6688B
- **Item Weight:** 900 Grams
- **Specification Met:** IEC 1010

## 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 **Style Name** 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 Uruguay*
*Store origin: UY*
*Last updated: 2026-02-19*