IEC 60068-2-75 Test Eha Pendulum Hammer Low or High Energy Impact
Test Apparatus
Standards & Clauses:
IEC60068-2-75:2014 “Environment testing for electric and electronic
products Part2: Test methods -Test Eh: Hammer tests IDT”
IEC60884-1:2013 “Plugs and socket-outlets for household and similar
purposes- Part1: General requirements” clause 24.1 and figure22-26
IEC60598-1:2017 “Luminaries-Part1: General requirements and tests”
IEC60669-1:2017 “Switches for household and similar
fixed-electrical installations - Part1: General requirements”
clause 20.1
IEC62262:2002 “Degrees of protection provided by enclosures for
electrical equipment against external mechanical impacts (IK code)
”
Samples and Restrictions:
Household and similar electronic and electrical products and their
accessories such as plugs and sockets and wall mounted mounting
boxes, screw glands, covers, switches, luminaries, etc.
Application:
It is used for the impact resistance test of household and similar
electronic and electrical products and their accessories such as
plugs and sockets and wall mounted mounting boxes, screw glands,
covers, switches, lamps, etc., to assess the safety performance and
strength level of the products.
Test Principle:
Test Eha:Pendulum Hammer, the striking element is free released at
a certain height through a 1 m pendulum tube,impact the specimen at
the lowest point in the vertical direction, after the conversion of
gravitational potential energy to kinetic energy, to achieve the
purpose of impact test on the sample.
Structure:
The low energy pendulum impact test device is mounted to the wall,
the sample mounting bracket is adjustable up, down, left and right,
and the angle can be adjusted by pivot, thereby achieving impacts
on different positions on the front side and impacts on side of the
sample.
The high-energy pendulum impact test device adopts a trolley
structure, can move around left and right, the height of the upper
and lower impact points is adjustable through the screw guide, the
impact angle is adjustable from 0 to 90°.
Technical Parameters:
| Model No.: | SN2122A (low energy) | SN2122B (high energy) |
| Energy/J | 0.14, 0.2, 0.35, 0.5, 0.7, 1.0 | 2, 5, 10,20, 50J are optional |
Equivalent Mass kg | 150g±1g (200g),200g±1g (250g) optional | 500g,1.7kg,5 kg,5 kg,10 kg optional |
| Pendulum Tube | Length 1000mm,outer diameter 9 mm, wall thickness 0.5 mm steel pipe | Length 1000㎜,outer diameter 15.9 mm, wall thickness 1.5 mm steel
pipe |
| Impact Point | With the adjustable range of sample mounting bracket | Up and down adjustable, stroke: 200-1200mm, the height is
customizable |
| Height of Fall | 0-500mm, scale display | 0-500mm, scale display |
| Striking Element Fix and Release | Fixed by mechanical latch, released by spring device | Fixed by mechanical latch, released by spring device |
| Mounting Brackets | Weight:10±1 kg, the structure is firmness,X, Y axis are adjustable,
can rotate ±90° around the rotation axis of mounting plate | Lamp mounting bracket can be optional |
Table 1 Striking element characteristics
| Energy / J | ≤1 ±10% | 2 ±5% | 5 ±5% | 10 ±5% | 20 ±5% | 50 ±5% |
| Equivalent Mass ±2%kg | 0.25(0.2) | 0.5 | 1.7 | 5 | 5 | 10 |
| Material | Nylon | Steel |
| R/mm | 10 | 25 | 25 | 50 | 50 | 50 |
| D/mm | 18.5(20) | 35 | 60 | 80 | 100 | 125 |
| f/mm | 6.2(10) | 7 | 10 | 20 | 20 | 25 |
| r/mm | - | - | 6 | - | 10 | 17 |
| l/mm | Adjusted according to the equivalent mass, see Appendix A |
Table 2 Height of Fall
| Energy /J | 0.14 | 0.2 | (0.3) | 0.35 | (0.4) | 0.5 | 0.7 | 1 | 2 | 5 | 10 | 20 | 50 |
| Equivalent Mass /kg | 0.25 | (0.2) | 0.25 | (0.2) | 0.25 | (0.2) | (0.2) | 0.25 | 0.25 | 0.25 | 0.5 | 1.7 | 5 | 5 | 10 |
| Height of Fall ±1%mm | 56 | (100) | 80 | (150) | 140 | (200) | (250) | 200 | 280 | 400 | 400 | 300 | 200 | 400 | 500 |
| Note 1, see note 3.2.2; Note 2, the energy unit of this part of the
joule (J) is derived from the standard gravity acceleration (g),
the whole value of g round: 10m / s2. |
Table 3 Relationship of IK code and corresponding energy
| IK Code | IK00 | IK01 | IK02 | IK03 | IK04 | IK05 | IK06 | IK07 | IK08 | IK09 | IK10 |
| Energy / J | a | 0.14 | 0.2 | 0.35 | 0.5 | 0.7 | 1 | 2 | 5 | 10 | 20 |
Note 1. If higher impact energy is required, the recommended value
is 50J. Note 2: Some other standards use a single digit to indicate the
specified impact energy. To avoid mixing with it, the feature
number is represented by two digits. |
| a. Unprotected according to this standard |
