What is standard EN/IEC 60068-2-75?
Standard EN/IEC 60068 consists of 3 methods for testing the impact resistance of a test object against impacts with different severity levels. It serves to demonstrate the mechanical strength of a product and is intended primarily for the testing of electrical equipment. The test consists of a standardised test procedure with a defined number of impacts on the test object with a defined impact energy. Standard IEC 60068-2-75 covers impact energies from 0.14 J to 50 J.
EN 60068-2-75 Dimensions table of impact elements
| IK code | IK00 | IK01 | IK02 | IK03 | IK04 | IK05 | IK06 | IK07 | IK08 | IK09 | IK10 | IK11 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Impact energy (Joule) | * | 0.14 | 0.20 | 0.35 | 0.50 | 0.70 | 1.00 | 2.00 | 5.00 | 10.00 | 20.00 | 50.00 |
| Drop Heigth (mm) | * | 56 | 80 | 140 | 200 | 280 | 400 | 400 | 300 | 200 | 400 | 500 |
| Mass (kg) | * | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.25 | 0.50 | 1.70 | 5.00 | 5.00 | 10.00 |
| Material | * | P1 | P1 | P1 | P1 | P1 | P1 | S2 | S2 | S2 | S2 | S2 |
| R (mm) | * | 10 | 10 | 10 | 10 | 10 | 10 | 25 | 25 | 50 | 50 | 50 |
| D (mm) | * | 18.5 | 18.5 | 18.5 | 18.5 | 18.5 | 18.5 | 35 | 60 | 80 | 100 | 125 |
| f (mm) | * | 6.2 | 6.2 | 6.2 | 6.2 | 6.2 | 6.2 | 7 | 10 | 20 | 20 | 25 |
| r (mm) | * | – | – | – | – | – | – | – | 6 | – | 10 | 17 |
| l (mm) | * | Must be adapted to the appropriate mass | ||||||||||
| Swing hammer | * | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Spring hammer | * | Yes | Yes | Yes | Yes | Yes | Yes | No | No | No | No | No |
| Free fall hammer | * | No | No | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
Specifications from the standard EN 60068-2-75
* not protected according to the standard
1. Polyamide 85 ≤ HRR ≤100 Rockwell hardness according to ISO 2039/2
2. Steel Fe 490-2 acccording to ISO 1052, Rockwell hardness HRE 80...85 according to ISO 6508
* not protected according to the standard
1. Polyamide 85 ≤ HRR ≤100 Rockwell hardness according to ISO 2039/2
2. Steel Fe 490-2 acccording to ISO 1052, Rockwell hardness HRE 80...85 according to ISO 6508
How to do an IK test
In the IK test, an impact element is dropped from a well-defined height with a defined weight and shape onto the test site.
Impact element mass M
Acrylic glass pipe
Drop height h
Test object
Base plate
Impact Force Calculator
This online impact force utility calculates interesting values like force of impact, impact speed, deceleration or G-Force of an impact element dropped from a defined height onto a EUT (equipment under test).
EN60068-2-75 standard-complying impact elements are the prerequisite for reproducible test results. Here you can find sketches for free download.
IK impact energy increase
EN 60068-2-75 drop heights
| Energy J | 0,14 | 0,2 | 0,35 | 0,5 | 0,7 | 1 | 2 | 5 | 10 | 20 | 50 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Total mass kg | 0,25 | 0,25 | 0,25 | 0,25 | 0,25 | 0,25 | 0,5 | 1,7 | 5 | 5 | 10 |
| Drop height mm ± 1% | 56 | 80 | 140 | 200 | 280 | 400 | 400 | 300 | 200 | 400 | 500 |
Impact energy increase IK test
| IK classification | Impact energy (J) | Energy gain (%) |
|---|---|---|
| IK00 | 0.00 | |
| IK01 | 0.14 | |
| IK02 | 0.20 | 42.86 % |
| IK03 | 0.35 | 75.00 % |
| IK04 | 0.50 | 42.86 % |
| IK05 | 0.70 | 40.00 % |
| IK06 | 1.00 | 42.86 % |
| IK07 | 2.00 | 100.00 % |
| IK08 | 5.00 | 150.00 % |
| IK09 | 10.00 | 100.00 % |
| IK10 | 20.00 | 100.00 % |
| IK11 | 50.00 | 150.00 % |
