EWP Insulation Testing - EWP Electrical Testing

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Following the guidelines set forth by AS/NZS1418.10:2011, there is a mandatory requirement for the periodic re-testing of electrically insulated Elevated Work Platform (EWP) trucks every six months. This is crucial to verify and uphold the insulation properties that safeguard the workers within the platform's bucket. Additionally, a more comprehensive examination known as acceptance testing is mandated every ten years, particularly after a major inspection or in the aftermath of significant repairs or incidents.

Presenting the insulated EWP unit in a meticulously clean and well-prepared state is paramount. This preparation is essential to facilitate the re-testing process without any hitches and to enhance the likelihood of obtaining a favorable pass result for the asset.

CaliPro specialises in High Voltage testing (HV), encompassing the scrutiny of insulated EWPs. With considerable expertise in compliance testing, the company provides recommendations to assist in preparing for the testing procedure:

1. Adhering to the AS/NZS1418.10:2011 National Standard, testers require the Mobile Elevated Working Platform (MEWP) to be presented in the condition it is intended to be tested. Therefore, it is imperative that the MEWP is clean and devoid of any visible damage before testing.

2. Cleaning the MEWP, both inside and outside, at least 48 hours prior to testing, paying particular attention to the insulating inserts.

3. Recognizing that test failures can often be attributed to moisture, expedite the drying process by elevating the Boom in the air.

4. Avoiding washing the MEWP within 12 hours of any scheduled test, as insufficient drying time may lead to electrical test failures.

5. Ensuring that the surface of the Boom is polished to prevent water from pooling on the insulating inserts during Wet Tests, as this could result in failure.

6. Conducting a visual inspection of the MEWP for any missing or damaged covers, and promptly replacing or repairing them if necessary.

It is emphasized that due to the standard's specifications and required drying times, testing companies cannot assist in the cleaning process. Therefore, adequate time must be allocated for these preparations before testing.

Additionally, external factors such as rain, high humidity, or cold temperatures can negatively impact testing results. To mitigate these influences, it is recommended to store the EWP in a dry and secure environment before testing, especially in conditions of high humidity or low temperatures.