Electrical-Engineering-portal.com-7 Golden Safety Rules for Working in HV Laboratory

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7 Golden Safety Rules for Working In HV Laboratory

7 Golden Safety Rules for Working In HV Laboratory (on photo: High-Voltage Lab, Delft University of Technology, Delft, Netherlands)

Employees performing operations and testing work in high voltage laboratory are exposed to a greater hazardthan

most other employees.

Safety rulesMUST NOTbe seen as a means of limiting our freedom, but should rather be looked upon as valuable

advice to ensure safe working conditions.

7 golden rules to remember ALWAYS

Just to mention that there are many other safety rules to be followed. These are just the basicsand I think some of

the most important.

If you have some rule(s) to add, please leave the comment below

Rule no. 1

Sufficient clearancesmust be provided to prevent unplanned flashovers.

Rule no. 2

Suitable barriersmust be provided.
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Rule no. 3

A suitable earth planemust be provided as safety earth and reference point for measurements. It is not advisable

try to separate earths. In measuring circuits, such as voltage dividers and the Schering bridge, a bolted connection

to earth is required.

If this connection is broken, the full voltage appears across the break. Protective spark gapsand overvoltage

limiting devicescan be used.

Rule no. 4

Any object in the laboratory should be either well connected to earth potential or at high voltage. Floating object

cause problems.

Rule no. 5

Suitable interlocksthat switch off the power on opening must be provided on doors and gates leading to live areas

Rule no. 6

A suitable earth stick must be provided to earth any piece of equipmentbefore touching. The rule is not to becom

part of a circuit. Special care should be taken with circuits having capacitors especially with DC.

Rule no. 7

A person must NEVER work alone in a high voltage laboratory: double check and cross-check.

Engineering High Voltage Lab University of Leicester (VIDEO)

Cant see this video? Click hereto watch it on Youtube.

About Author //

Edvard Csanyi

Edvard- Electrical engineer, programmer and founder of EEP. Highly specialized for

design of LV high power busbar trunking (


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2.

wc_foronda

Nov 18, 2013

Only Competent Authorized Personnels are allowed to work on any HV Testing/Operation.

.

(reply)

3.

jayagopi

Jan 10, 2013

Keep your left hand in your overall or overcoats pocket, while right hand is engaged in testing

and vice versa for left hand users. Objective is to mitigate leakage current flow through your heart.

(reply)

4.

Antonio Melgarejo

Dec 30, 2012

Always we must work with a coworker, never work alone, and if its possible that the coworker

have a good professional feeling with you.

Home`s problems arent a good help for finish a good job.

We can park the troubles in your minds and imagine mentally the energized bars, the magnetic fields, the air

ionized zones.

If is possible, working with one hand and the hand not used in the backs to prevent discharges to ground and

participate in the circuit.

Learn the position of the main breaker, and the fire extinguisher, and prepare take down it for ready to fire

(reply)

Edvard

Jan 02, 2013

Agree with you Antonio. There are so many potential distractions that can lead you to the

deadly hazard in laboratory.

(reply)
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5.

Kichu Udayan

Dec 27, 2012

The supporting Equipments (Tools and accessories) used for testing should be Kept in proper

places . They should be placed in such a way that ,Equipments should not block Exit way during any Hazards

(reply)

Edvard

Jan 02, 2013

Good point Kichu.

(reply)

6.

Thomas J. Zazulak

Dec 26, 2012

All capacitors stored in a high voltage Lab must be shorted and case grounded at all times. This

applies to to both AC and DC high voltage testing. This also applies to high voltage impulse testing.

(reply)

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