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ER-81

Product catalog summary

Features:

Supports 2 and 3 wire testing with a range of 0.01Ω to 4000Ω.
Measures interfering voltage from 0 to 100V.
Includes a function to compensate for test cable resistance (Rk).
Equipped with an LED backlight for easy reading in dim environments.
Automatic shutdown after 10 minutes of inactivity.
Powered by six LR6/R6 AA 1.5V alkaline batteries.
Rated IP54 for outdoor use.
Safety compliant with EN61010-1 CATIV 100V to ground; max 100V between V-E terminal.

Importance of Grounding:

Proper grounding is essential to prevent harm from faulty equipment, lightning strikes, and induced voltages. Ground systems can degrade over time, leading to risks such as electrical shock, equipment damage, and heat build-up.

Technical Specifications:

Earth Resistance: Ranges from 0.01 to 4000Ω with varying resolutions and accuracy of ±(2% + 3dgt).
Interfering Voltage Measurement: Accuracy of ±(2% + 5dgt) with a resolution of 0.1V.
Frequency Response Range: 40Hz to 500Hz.
Test Frequency: Approximately 820Hz.
Test Current: Varies with resistance, e.g., 3 mA at 40Ω.
Open Test Voltage: ≤48Vrms.
Display: 4000 counts with auto power off and data hold features.
Dimensions: 168 mm x 118 mm x 70 mm; Weight: 760g including batteries.
Accessories: Includes test lead set, quick test set, and ground rods.

Battery Validity Test:

Conducts a 5-second test with a 30-second interval to ensure battery validity.

Packing & Accessories:

The ER-81 comes with standard accessories in delivery packing, including a manual and a nylon carry pouch.

Contact Information:

BST Caltek Industrial Ltd., Hong Kong Office, Room 209, 4th Floor, 45-51 Tai Lin Pai Road, Kwai Chung, N.T., Hong Kong. Tel: (852) 2424-4694, Email: [email protected], Website: www.bstcaltek.com

Catalog excerpts

Economical Earth Resistance Tester We need a proper grounding to benefit our daily activities and facilities. It helps us not to hurt due to faulty equipment or home appliance installation. Damage from lightning strikes and induced voltages also hazarded to us. Over time, ground systems can degrade or become ineffective. The risks from ground system deterioration include potentially deadly electrical shock situations, equipment damage and heat build-up on a single piece of electrical equipment that is dangerous to our community. All British Standard Tester ER models (ER-80A / 80M / 81 / 82M / 83A) can perform Earth resistance tests (using the 2, 3 & 4 terminals rod method) to determine the connection from equipment to the grounding system for safety assurance. Supports 2 and 3 wire testing (0.01Ω - 4000Ω) Interfering voltage measurement (0~100V) Compensate test cable resistance Rk function LED backlight for easy readout in dim-lit environments Automatic shutdown (No operation for 10 minutes) Power Supply: LR6/ R6 AA 1.5V x 6 Alkaline battery IP54 for outdoor environments Safety: EN61010-1 CATIV 100V to the ground; max 100V between V-E terminal Due to our policy of continual product development, we reserve the right to amend the specifications of all mentioned products without not

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1. 2. TECHNICAL SPECIFICATIONS EARTH RESISTANCE Range(Ω) Test Frequency Test Current 40Ω about 3 mA, 400Ω about 2 mA, 4000Ω about 1 mA, Open Test Voltage INTERFERING VOLTAGE MEASUREMENT Range Frequency Response BATTERY VALIDITY TEST (5 SECOND TEST, 30 SECOND INTERVAL) Function Test Resistance Battery Validity Test Ground Test More Than 3000 Times BASIC FEATURES Display Reading Data Hold Lead Resistance Removal (Rk) BASIC PARAMETERS Size (Main Unit) (W x H x D) Weight (Main Unit) Test Lead Set x 1 (Red 15m, Yellow 10m & Green 5m), Quick Test Set x 1, Ground Rod x 2 Standard Packaging White Box...

Open the catalog to page 2

2. PACKING & ACCESSORIES ER-81 Earth Resistance Tester with Standard Accessories in Delivery Packing BST CALTEK INDUSTRIAL LTD. HONG KONG OFFICE Room 209, 4 Floor, 45-51 Tai Lin Pai Road, Kwai Chung, N.T., Hong Kong Tel: (852) 2424-4694 Email: [email protected] Due to our policy of continual product development, we reserve the right to amend the specifications of all mentioned products without notice.

Open the catalog to page 3

ER-81

ER-81

Catalog excerpts

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