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.

FUNCTIONS

- 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)

- FPower 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

TECHNICAL SPECIFICATIONS

EARTH RESISTANCE

Range(Ω)

Resolution(Ω)

Accuracy

0.01 ~ 40.00 Ω

0.01 Ω

±(2% + 0.1Ω)

0.1 ~ 400 Ω

0.1 Ω

±(2% + 3dgt)

1 ~ 4000 Ω

1 Ω

±(2% + 3dgt)

Test Frequency

About 820Hz

Test Current

40Ω about 3 mA, 400Ω about 2 mA, 4000Ω about 1 mA

Open Test Voltage

≤48Vrms

INTERFERING VOLTAGE MEASUREMENT

Range

Resolution

Accuracy

Frequency Response

100.0 V

0.1 V

±(2% + 5dgt)

40Hz ~ 500Hz

BATTERY VALIDITY TEST (5 SECOND TEST, 30 SECOND INTERVAL) Battery

Function

Test Resistance

Battery Validity Test

Ground Test

10Ω

More Than 3000 Times

BASIC FEATURES

Display Reading

4000 Counts

Auto Power Off

10 minutes (No Operation)

Data Hold

Auto

LCD Backlight

Lead Resistance Removal (Rk)y

2 Wire Measurement

3 Wire Measurement

BASIC PARAMETERS

Size (Main Unit) (W x H x D)

168 mm x 118 mm x 70 mm

Weight (Main Unit)

760g, Including Batteries

Battery

LR6 / R6 1.5V x 6 AA Alkaline Battery

Dimensions

Grey + Blue

Accessories

Test Lead Set x 1 (Red 15m, Yellow 10m & Green 5m), Quick Test Set x 1, Ground Rod x 2

Standard Packaging

White Box x 1, Manual x 1, Nylon carry pouch x 1

Due to our policy of continual product development, we reserve the right to amend the specifications of all mentioned products without notice.

Doc Download

ER-81 Specification