ShareChat
click to see wallet page
search
Ramesh Kushwaha - Author on ShareChat: Funny, Romantic, Videos, Shayari, Quotes
Ramesh Kushwaha
518 ने देखा
•
#electrician
electrician - ا a [ EARTHING TESTER (EARTH RESISTANCE TESTER) Purpose: Earthing | soil /or ground resistance Tester is device used to measure (earth resistance) in Ohms (Q) 0 + Why Earth Resistance Test is Required earthing Ensure proper Prevent electric shock Avoid earth fault /lightning / fire Ensure electrical safety 7 Earthing Types of Testers Manual (Cronk type) 3 Point Earth Test Connections Digital (Ground Resistance Test (3-Pole) Clamp (Non-contact) Earth Test Methods (Field) 1. 3 Point /3 Pole Test (Standard Method) 5-I0 m 5-I0m 2 Point /2 Pole Test (For bonding check) 2 5-10 m 3. Clomp-on Test (For lightning rod , bonded system ) Green Earth (E) Yellow Potential (P) 3 Point Eorth Test Connections Red Current Green Earth (E) Potential (P) Step Yellow Stepz Procedure -by- Red Current (C) auxiliary rods (P&C) into soil Drive २. Connect test leads (E PC) properly 3. Set to 20Q range & press TESTI TESTER EARTH Read earth resistance in Q 4 39 Press "TEST" again to verify 5 Kecord the lowest stqble vqlue 6 6(u ٢ TEST Good Earth Resistance Value (General) mole ATESOLSTTCR 300 Low risk: < 52 5040 Ideal level: 10 to 2 Q 200 Higher values: Over 1OQ is usully poor 300 2|7| ६P Rule of Thumb: 1Q2 per 309 rod parallel Tenc' Common Problems & Causes a reading Erratic Dry soil, loose rods; external noise Higher resistance: High soil resistivity Prasant Vishak ا a [ EARTHING TESTER (EARTH RESISTANCE TESTER) Purpose: Earthing | soil /or ground resistance Tester is device used to measure (earth resistance) in Ohms (Q) 0 + Why Earth Resistance Test is Required earthing Ensure proper Prevent electric shock Avoid earth fault /lightning / fire Ensure electrical safety 7 Earthing Types of Testers Manual (Cronk type) 3 Point Earth Test Connections Digital (Ground Resistance Test (3-Pole) Clamp (Non-contact) Earth Test Methods (Field) 1. 3 Point /3 Pole Test (Standard Method) 5-I0 m 5-I0m 2 Point /2 Pole Test (For bonding check) 2 5-10 m 3. Clomp-on Test (For lightning rod , bonded system ) Green Earth (E) Yellow Potential (P) 3 Point Eorth Test Connections Red Current Green Earth (E) Potential (P) Step Yellow Stepz Procedure -by- Red Current (C) auxiliary rods (P&C) into soil Drive २. Connect test leads (E PC) properly 3. Set to 20Q range & press TESTI TESTER EARTH Read earth resistance in Q 4 39 Press "TEST" again to verify 5 Kecord the lowest stqble vqlue 6 6(u ٢ TEST Good Earth Resistance Value (General) mole ATESOLSTTCR 300 Low risk: < 52 5040 Ideal level: 10 to 2 Q 200 Higher values: Over 1OQ is usully poor 300 2|7| ६P Rule of Thumb: 1Q2 per 309 rod parallel Tenc' Common Problems & Causes a reading Erratic Dry soil, loose rods; external noise Higher resistance: High soil resistivity Prasant Vishak - ShareChat