Requirements for personal grounding according to DIN EN 61340-5-1
ESD Control element | Product qualification | Verification of compliance | ||
Test method | Thresholdsb | Based on test method | Thresholdsb | |
Wrist straps (straps and grounding cable) | IEC 61340-4-6 | R < 5 x 106 Ω or user-defined threshold | See wrist strap system | |
Resistance of the wrist strap | IEC 61340-4-6 Inside Outside | - <= 1 x 108 Ω <= 1 x 107 Ω | - Not applicable Not applicable | |
Wrist strap systema | Not applicable | IEC 61340-4-6 Testing the electrical connection of the wrist strap | R < 3,5 x 107 Ω | |
Footwear | IEC 61340-4-3c | R <= 1 x 108 Ωe | See system Person/footwear | |
System Person/footwear/floor | IEC 61340-4-5 | Rg <= 1 x 109 Ω and absolute value of body voltage < 100 V (average of the 5 highest peaks) | IEC 61340-5-1 | Rg < 1 x 109 Ωd,f |
System Person/footwear | Not applicable | - | Rgp < 1 x 108 Ω | |
Legend to the table
a | In situations where EPA clothing (according to IEC 61340-4-9) is used as part of the wrist strap grounding path, the resistance of the complete system should be including person, protective clothing and grounding cable should be < 3.5 x 107 Ω. |
b | Symbols used in this table: Rg corresponds to resistance to ground and Rgp refers to resistance to groundable point. |
c | For the product qualification of footwear according to IEC 61340-4-3, the environmental conditions for the test should be (12 ± 3) % relative humidity and (23 ± 2) °C. |
d | A periodic test of the generated body voltage should be performed to verify that the voltage is less than 100 V. |
e | The threshold of the resistance applies to the successive measurement of a single foot at a time, not both feet at the same time. |
f | The required threshold of<1.0 x 109 Ω is the highest allowable value. The user should set an upper limit based on the resistance values measured for the product qualification of the footwear and floor system which ensure a maximum generated body voltage of 100 V, and use these resistance values for the verification of compliance. |
Workwear | Professional Footwear 2024
DPV main catalog 2023 | 2024