Pendulum Hammer Test Apparatus HC9921A
Standard: IEC60068-2-75 Environmental testing – Part 2: Tests – Test Eh:
Hammer tests, IEC60068-2-63, IEC62262 Degrees of protection
provided by enclosures for electrical equipment against external
mechanical impacts (IK code), IEC60439-5 Low-voltage switchgear and
controlgear assemblies - Part 5:Particular requirements for
assemblies for power distribution in public networks
Application: This device is suitable for mechanical impact strength test to
electric cabinets and other sheet metal, shell of Non metal
electric energy metering cabinet, substation cable switchboard and
cable junction box
Test sample: The shell of electric energy metering cabinet, substation cable
switchboard and cable junction box and similar equipment
Feature: Equipment using the car structure, can be moved left and right,
forward and backward, the upper and lower impact point height
adjustable, and the impact angle 0-90°adjustable. The device is a
low energy pendulum impact device for 2J and above.
Parameters:
| Model | HC9921A | HC9921B |
| Pendulum | Length: 1000mm; external diameter: 9mm; steel pipe wall thickness:
0.5mm. Composition of the equivalent mass with impact element |
| Impact point | Up and down adjustable, stroke 200-1200mm, height can be customized |
| Impact element | 2,5,10,20,50J impact hammer | 5kg Horn impact hammer |
| Drop height | Scale display |
| Release mode | Mechanical |
| Dimension | 1300*500*2300mm |
Impact energy, equivalent mass and drop height table
| Energy/J | 2 | 5 | 10 | 20 | 50 |
| Equivalent mass /kg | 0.5 | 1.7 | 5 | 5 | 10 |
| Drop height ±1%mm | 400 | 300 | 200 | 400 | 500 |
Notes: 1. See note in IEC 60068-2-75 3.2.2 - In this part, the energy (J) is calculated taking the standard
acceleration due to the earth’s gravity(g), rounded up to the
nearest whole number, that is 10m/s².
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