Technological Innovation

Earthing Resistance Test

1. Purpose:

The requirements are specified in order to ensure that exposed metal is effectively
connected to the main earth terminal of the appliance.

2. Application:

Class 0I and class I appliance.

3. Test Apparatus:

Having a no-load voltage not exceeding 12 V (a.c. or d.c.) and equal to 1.5 times rated
current of the appliance or 25 A, whichever is the greater.

4. Special Instruction:

a. The resistance of flexible cable or cord is not included in the measurement.

b. Care is taken that the contact resistance between the tip of measuring probe and
the metal part under test does not influence test result.

c. Current is passed between the earthing terminal or earthing contact and each of
the accessible metal parts in turn.

5. Test Procedure:

a. Connect the test probe to the earthing terminal or earthing contact and the
accessible metal parts.

b. Adjust the test equipment until the current reach 1.5 times rated current of the
appliance or 25 A, whichever is the greater. The test period set at 60s.

c. Press the test button and read the maximum resistance.

6. Evaluation of test result:

The earthing resistance shall not exceed 0.1 Ω

CONTACT US

Contact: Eason Wang

Phone: +86-13751010017

E-mail: info@iec-equipment.com

Add: 1F Junfeng Building, Gongle, Xixiang, Baoan District, Shenzhen, Guangdong, China

Scan the qr codeclose
the qr code
TAGS Test Probe BTest Probe 18Test Probe 14Test Probe 17Test Probe 32Test Probe 1Test Probe 2Test Probe 12Test Probe 31Test Probe ATest Probe 41Test Probe 19Test Probe DTest Probe CTest Probe 13Test Probe 11Test Probe 43Test PinTest FingerTest Probe