IEC 61851 Pendulum Impact Testing Device – Mechanical Strength Test for EV Charging Piles
Applicable Standards:
IEC60068-2-75:2014
IEC62262:2021
IEC 61851-1-2017
IEC 62477-1:2022
Test Specimen and Scope:
Electric vehicle AC/DC charging piles, transformer cabinets, and metering boxes.
Test Purpose:
This equipment is used to perform mechanical strength testing on EV charging piles or transformer cabinets used in electric vehicle charging systems.
Test Principle:
Test Eh a: Pendulum Hammer Impact
The impact element is released freely through a 1-meter pendulum tube from a defined height and strikes the specimen at the lowest vertical position. The test is achieved by converting gravitational potential energy into kinetic energy.
Test Eh c: Vertical Free Fall Hammer Impact
The impact element falls vertically through a guide tube from a specified height in a static state and impacts the horizontal surface of the specimen. The test is achieved by converting gravitational potential energy into kinetic energy.
Structure and Features:
As shown in the layout below, the system consists of left and right structures.Left side: pendulum adjustment and release mechanism,Right side: specimen mounting platform
1.The pendulum impact unit is mounted on a wheeled trolley structure, allowing large DC charging piles to be tested from different sides. Small AC/DC chargers can be mounted on the platform including bottom and rear side testing.
2. Both pendulum and vertical drop mechanisms are electrically adjustable in height, with a range of 0.2–2.5 m.
3.Impact angle is adjustable to meet different drop heights, supporting IK06–IK11 energy levels (1–50J).
4. Anti-secondary impact function for pendulum system.
5. Electromagnetic release for both pendulum and drop hammer with remote one-key operation.
6. Quick replacement of impact elements.
7. PLC control system with touch screen and infrared remote control.
8. A3 steel frame with powder-coated finish for high rigidity and stability.
Technical Parameters:
| Model | SNQC1008B |
| Control System | PLC control, touch screen operation. All functions including lifting and release are integrated into the touch screen, with infrared remote control support. |
| Test Specimen Range | 1, Wall-mounted and pole-mounted AC charging piles 2, Cabinet-type DC charging piles Note: Maximum specimen size on platform: W×D×H = 1 × 1 × 2.0 m
|
| Test Functions | 1, Pendulum impact test (side impact) 2, Drop hammer impact test (top surface impact) |
| Drive System | Motor + reducer for lifting; electromagnetic release system. |
| Transmission System | Precision ball screw + linear guide rail. |
| System Structure | Frame structure with specimen platform. Impact mechanism installed on frame; large specimens may be placed directly on the floor. Steel enclosure with corrosion-resistant coating.
|
| Anti-secondary impact | Yes, automatic locking of rebound tube |
| Height adjustment | Motor-driven via touch screen input |
| Release method | Electromagnetic, one-key operation |
| Impact energy | 1,2,5,10,20J,50J(IK06–IK11)
|
| Pendulum impact unit equivalent masses | 250g,500g,1.7kg,5 kg,5 kg,10 kg±1%,achieved through pendulum tube combination |
| Pendulum tubes | 1J: Ø9 mm steel tube, length 1000 mm, wall thickness 0.5 mm 2J: Ø10 mm steel tube, length 1000 mm 5–50J: Ø15.9 mm steel tube, length 1000 mm |
| Test height | electric lifting, stroke 200–2500 mm, touchscreen control |
| Drop height | Range:0-500mm,with scale display, adjustable impact angle
|
| Lifting system | motor-driven, height set via touchscreen |
| Release system | electromagnetic release with one-button operation |
| Impact energy range | 1 / 2 / 5 / 10 / 20 / 50 J (IK06–IK11) |
| Equivalent masses | 250g,500g,1.7kg,5 kg,5 kg,10 kg±1%,self-weight based system |
| Guide tubes | 1,2,5,10,20J,50J,dedicated tubes for each energy level |
| Base Plate | Reinforced heavy-duty steel base plate |
| Specimen impact height | Electric vertical adjustment with a stroke of 200–2500 mm, controlled via touchscreen |
| Specimen impact horizontal positioning | Adjustable extension position of the drop weight mechanism, allowing impact at different points on the upper surface of the specimen |
| Drop height | digital display on touchscreen; height can be set after initial contact via touchscreen control |
| Sample Platform Structure | |
| Dimensions | 1.0*1.2m,capable of clamping specimens up to 1.0 × 1.0 m |
| Base plate | 10mm thick steel plate with threaded mounting holes arranged according to specimen layout requirements |
| Support columns | vertical mounting columns compatible with rear-mounted sample panels |
| Quick connection & separation structure | Allows connection to or separation from the impact frame; used in connected mode for small specimens and in separated mode for large DC charging piles (EV charging stations) |
| Safety & Functional Features | 1. Motor overload protection 2. Emergency stop protection 3. Three-color status indicator system: Yellow: Standby Green: Running Red: Alarm Real-time system status indication 4. Leakage protection system included |
| Mobility Design | Both the impact frame and sample platform are equipped with support structures and caster wheels, allowing mobility and secure locking to the ground when positioned. |
Annex Tables:

Table 3 Relationship of IK code and corresponding energy
| IK Code | IK00 | IK01 | IK02 | IK03 | IK04 | IK05 | IK06 | IK07 | IK08 | IK09 | IK10 | IK11 |
| Energy / J | a | 0.14 | 0.2 | 0.35 | 0.5 | 0.7 | 1 | 2 | 5 | 10 | 20 | 50 |
| 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. | ||||||||||||