Field Instruments

Product Overview

The Kyoritsu KEW 4105A-H Earth Tester is a high-performance digital earth resistance tester designed for professional electrical installation, grounding verification, and maintenance testing. It delivers accurate and stable earth resistance measurements in a simple, easy-to-operate instrument suited for industrial facilities, substations, commercial buildings, and construction sites.

Featuring robust construction and intuitive operation, the KEW 4105A-H ensures dependable results even in challenging field environments.

Key Features

• Digital earth resistance measurement
• Supports 3-wire and 2-wire measurement methods
• Large, easy-to-read LCD display
• Automatic checking of auxiliary earth spike resistance
• Earth voltage measurement function
• Three resistance measurement ranges for versatility
• IP54 protection rating — dust and splash resistant
• Simple rotary selector switch operation
• Overload protection on measurement terminals
• Lightweight and ergonomic design

Technical Specifications

Manufacturer Information

• Manufacturer: Kyoritsu
• Model: KEW 4105A-H Earth Tester

Measurement Ranges

Earth Resistance:
• 0–20 Ω
• 0–200 Ω
• 0–2000 Ω

Earth Voltage:
• 0–200 V AC

Accuracy

Earth Resistance:
• ±2% of reading ± 0.1 Ω (20 Ω range)
• ±2% of reading ± 3 digits (200 Ω, 2000 Ω)

Earth Voltage:
• ±1% of reading ± 4 digits

Overload Protection

• Earth resistance terminals: withstands 280 V AC for 10 seconds
• Earth voltage measurement: withstands 300 V AC for 1 minute

General Specifications

• Safety Standards: IEC61010-1 CAT III 300 V, IEC61557-1/5
• Protection Rating: IP54
• Power Supply: 6 × 1.5 V AA batteries
• Dimensions: Approx. 105 × 158 × 70 mm
• Weight: Approx. 550 g

Standard Accessories

• Earth resistance test leads set (red, yellow, green)
• Auxiliary earth spikes (2 pcs)
• Simplified measurement probe
• Shoulder strap
• 6 × AA batteries
• Instruction manual
• Soft carrying case

Applications

• Electrical grounding system testing
• Industrial and commercial plant earthing verification
• Substation grounding measurement
• Lightning protection system inspection
• Preventive maintenance and compliance testing

Why Buy from FieldInstruments.lk? (Kyoritsu KEW 4105A-H)

• 100% Genuine Kyoritsu Instruments – Original products with manufacturer warranty
• Competitive pricing with fast island-wide delivery
• Trusted supplier for professional electrical testing equipment
• Local warranty support and technical assistance
• Reliable after-sales service and calibration guidance
• Expert consultation for grounding compliance applications

Fieldinstruments.lk
50/3, Angampitiya Rd, Ethul Kotte, Sri Lanka. 10100.
Phone: +94718555888 Email: info@fieldinstruments.lk