Title: LV OPERATING REGULATIONS - National Treasury · Energy control unit Is 20 A Tariff meter...

PCM Reference: 32-123

SCOT Study Committee Number/Name: PDPO

Standard Technology

Title: LV OPERATING REGULATIONS Unique Identifier: 240-61523882

Alternative Reference Number: <n/a>

Area of Applicability: Engineering

Documentation Type: Standard

Revision: 2

Total Pages: 20

Next Review Date: August 2020

Disclosure Classification: Controlled Disclosure

Compiled by Approved by Authorized by

Naughty Kgomo

Senior Advisor Training

Johannes Reinecke

LV Plant Operating SC

Prince Moyo

Power Delivery Engineering GM

Date: Date: Date:

Supported by SCOT/SC

Colin Smith

SCOT/SC Chairperson

Date:

Document Classification: Controlled Disclosure

LV OPERATING REGULATIONS Unique Identifier: 240-61523882

Revision: 2

Page: 2 of 20

ESKOM COPYRIGHT PROTECTED

When downloaded from the WEB, this document is uncontrolled and the responsibility rests with the user

to ensure it is in line with the authorized version on the WEB.

Content

Page

1. Introduction .................................................................................................................................................. 4

2. Supporting clauses ...................................................................................................................................... 4

2.1 Scope ................................................................................................................................................. 4

2.1.1 Purpose .................................................................................................................................. 4

2.1.2 Applicability ............................................................................................................................ 4

2.2 Normative/informative references ...................................................................................................... 5

2.2.1 Normative ............................................................................................................................... 5

2.2.2 Informative ............................................................................................................................. 5

2.3 Definitions ........................................................................................................................................... 5

2.3.1 General .................................................................................................................................. 5

2.3.2 Disclosure classification ......................................................................................................... 8

2.4 Abbreviations ...................................................................................................................................... 8

3. Requirements .............................................................................................................................................. 9

3.1 Responsibilities .................................................................................................................................. 9

3.1.1 LV Operator............................................................................................................................ 9

3.1.2 LV responsible person ........................................................................................................... 9

3.1.3 LV Operator in training ........................................................................................................... 9

3.1.4 LV Specific Authorisation ....................................................................................................... 9

4. Access ....................................................................................................................................................... 10

4.1 Multiple LV circuit conditions ............................................................................................................ 10

5. Procedure for working on LV network ....................................................................................................... 10

5.1 Ground Level only ............................................................................................................................ 10

5.2 Above ground level (dead condition)................................................................................................ 10

6. Supervision LV Operator ........................................................................................................................... 10

7. Keys ........................................................................................................................................................... 11

7.1 General responsibilities .................................................................................................................... 11

7.1.1 LV Operator.......................................................................................................................... 11

7.1.2 Designated person ............................................................................................................... 11

7.1.3 Responsibilities of persons issued with keys ....................................................................... 11

7.2 Prepare LV plant for work ................................................................................................................ 11

7.2.1 General ................................................................................................................................ 11

7.2.2 Identification ......................................................................................................................... 11

7.2.3 Switching/linking .................................................................................................................. 11

7.2.4 Lockout ................................................................................................................................. 12

7.2.5 Tagging LV point of isolation ................................................................................................ 12

7.2.6 Safety testing ....................................................................................................................... 12

7.2.7 Earthing ................................................................................................................................ 12

7.3 Returning LV plant to service ........................................................................................................... 12

7.3.1 Preparing plant for returning to service ................................................................................ 12

7.3.2 Returning plant to service .................................................................................................... 13

7.4 Permit system ................................................................................................................................... 13

7.5 LV live work ...................................................................................................................................... 13

8. Testing and commissioning ....................................................................................................................... 13



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8.1 Energized LV underground and LV overhead infrastructure ........................................................... 13

8.2 De-energized LV underground and LV overhead infrastructure ...................................................... 13

9. Authorization .............................................................................................................................................. 14

10. Revisions ................................................................................................................................................... 14

11. Development team .................................................................................................................................... 14

Annex A – Low Voltage Authorisation .............................................................................................................. 15

Annex B – Low Voltage Permit ......................................................................................................................... 19

Annex C – Low Voltage Warning Sign ............................................................................................................. 20



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1. Introduction

These Low Voltage (LV) operating regulations contai ned in this standard are the minimum requirements. Additional requirements shall be appl ied where necessary:

1) These operating regulations shall apply to all operating, maintenance and construction on the LV apparatus of Eskom. The purpose of these regulations is to ensure the safety of all persons and to safeguard both the apparatus and the continuity of supply.

2) Every employee issued with this document shall thoroughly familiarize themselves with its content, and shall be held responsible for compliance with the regulations contained herein.

3) A copy of this document shall be issued to all such employees and other persons as the responsible manager may decide upon; and the procedure governing the issue, production upon request, and return of such documents shall be in accordance with rules approved by the responsible manager.

4) Circulars or instructions, in addition to and in modification of those contained in this document, may be issued from time to time, and when any regulation is amended or cancelled by such circulars, this document shall be corrected accordingly. These circulars or instructions shall be regarded as an extension of the regulations.

5) Employees who require information in connection with the LV operating must apply to their immediate superior, through whom arrangements will be made by the head of the department to supply the information and, if necessary, give practical demonstrations.

6) These regulations are an extension of and shall be read in conjunction with the Occupational Health and Safety Act (OHSA) [2] OHS Act No. 85 of 1993) as amended, and the regulations made hereunder.

7) Whereas not all the functions contemplated in these regulations may be individually required in the case of every portion of the area(s), the responsible manager may combine these functions to suit the organization and shall delegate authority in writing to any employee concerned.

8) In cases where the Eskom LV Network is electrically interconnected with that of another supply authority, special arrangements shall be made to suit both parties to ensure that safety is adhered to at all times.

9) In cases where, for practical reasons, these regulations cannot be complied with and where safety is not compromised, an exemption shall be applied for in writing to the Maintenance and Operations Management Manager of the Operating Unit concerned. In addition, the matter will be ratified in the Distribution LV Operating Study Committee).

10) Any word in these regulations implying the masculine gender shall also indicate the feminine gender, and vice versa.

2. Supporting clauses

2.1 Scope

2.1.1 Purpose

The purpose of this standard is to set out Low Voltage (LV) operating regulations for the Eskom Distribution Business.

2.1.2 Applicability

This document shall apply throughout Eskom Holdings Limited, its divisions, subsidiaries and entities wherein Eskom has a controlling interest:



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2.2 Normative/informative references

Parties using this document shall apply the most recent edition of the documents listed in the following paragraphs.

2.2.1 Normative

[1] ISO 9001, Quality Management Systems..

2.2.2 Informative

[2] OHS Act No. 85 Occupational health and safety act and regulations of 1993

[3] SANS 10142-1and 2 The wiring of premises Part 1: Low-voltage installations SABS Latest

[4] OHS Act 1993 Construction Regulations 2014 OHS Latest

2.3 Definitions

2.3.1 General

Definition Explanation

Alive ‘Alive’ means electrically connected to the power system and/or electrically charged.

Apparatus Any generator, transformer, motor, switchgear, isolator, feeder, and any other low-voltage plant.

Barricade It’s a device used to restrict an approach to Electrical Network

Connection and Disconnection Service Providers

A Person authorised to perform connection and disconnection of customers

Electrical Circuits Electrical circuit is the complete path of an electric current, including the generating apparatus, intervening resistors, or capacitors.

Dead Any apparatus so described is at or about zero potential and disconnected or isolated from any live power system.

Distribution pillar box

A junction box installed on an underground LV cable network, which is part of the infrastructure from which services connections originate to the respective customers.

Distribution transformer

The high-voltage terminations, isolators or fuses and bushings on the high and low-voltage sides of the transformer installed on a pole or in a ground-mounted unit.

Earthing The connecting of apparatus electrically to the general mass of earth in such a manner as will ensure at all times an immediate safe discharge of electrical energy;

Electricity Dispenser Is a tariff meter that dispenses pre-paid electricity to a 60 Amp Conventional Customer Installation and is controlled by either a key-pad or a token mechanism

Embedded Generators

One or more energy generation sources that includes the energy conversion device, static power converters, if applicable, and the control and protection gear within a customer network that operate in synchronism with the utility supply.



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Energy control unit Is 20 A Tariff meter with earth leakage build into it and socket outlet is prewired base

Fault finding The process of testing and inspecting the LV network to locate a fault.

Identification of LV circuits

Labelling and testing before and after switching out the circuit. The inspection of circuit or cable identification labels, visually tracing a circuit from its origin to the load and physically verifying the circuit voltage changed from dead to alive or vice versa after operating took place to ensure it is the correct circuit intended to be worked on.

Isolator Device used to break or make an LV circuit. This will include fuses. Miniature Circuit breaker and Moulded Case Circuit breakers

LV Operator in training

A person suitably trained and authorized to perform LV operating in terms of these regulations under the supervision of a person authorized to do so.

Line An exposed overhead feeder that includes supports and terminal equipment.

Linking The Opening or closing of isolators on the LV

Lockout A precautionary measure taken to prevent the unauthorized operation of a breaker, fuse and/or isolator, which could include locking off of isolators and/or cabinets, by means of sealing or locking; also removal of fuse holders and retention on the person.

Low Voltage Voltage that does not exceed 1 000 V alternating current (AC) or 1500 V direct current (DC)

LV live compartment Any compartment, enclosure or any situation in which inadvertent human contact with conductors or live parts of electrical apparatus working at low voltage is possible.

NOTE: Under no circumstance shall a Neutral Conductor be disconnected to any part of the circuit for isolation or testing purposes

LV operating Performing identification of circuit , switching, linking, locking out, safety testing, ( Earthing/bonding shall be done on bare conductors)and tagging of isolation points.

LV Operator A person suitably,, selected, trained, assessed and authorized to perform circuit identification, isolating, locking out, tagging and testing activities on either or both overhead and underground up to 1000 V networks or 1500DC.

LV overhead infrastructure

The LV network supplied from a pole-mounted transformer, which shall include the terminations of the LV bushing of the transformer to the busbar in the stubby/pillar box or Miniature Circuit-breaker (MCB) in the pole top box that is supplied from the transformer.

LV Responsible Person

A person who has been authorized to be responsible for ensuring that the work on the LV Infrastructure and Service Connections covered by a permit can be carried out safely and in accordance with this regulations

LV Specific Authorisation

Is the giving of permission in writing to perform specific duties and responsibilities in term of the LV Regulations

LV underground infrastructure

The LV network supplied from a mini-substation, which shall include the 400 V busbars in such mini-substation to the busbar in the stubby/pillar box that is supplied from the mini-substation.



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Mini-substation The cable terminations, transformer, switches, fuses and busbars on the high and low-voltage sides of the transformer contained in an enclosed and integrated substation.

LV Work Permit A printed form containing permit and clearance for work to be done on LV infrastructure.

Pole-mounted service distribution box

A junction box installed on overhead LV infrastructure from which services connections originates to the respective customers.

Lock off sign and tagging

The application or removal of approved notices prohibiting the interference with the infrastructure or service connection identifying the person or authority that prepared the plant.

Point of Supply Means the point at which the electricity is supplied to any premise by a supplier

Point of consumption

Means any point of the outlet or supply terminals of machinery which is not connected to a point of outlet and which converts electrical energy to another form of energy: Provided that in the case of machinery which has been insulated for any specific purpose as a complete unit, the point of consumption shall be the supply terminals which have been provided on the unit of machinery for that purpose

Point of outlet Means any termination of an electric installation which has been provided for connecting any electrical machinery without the use of tools

Point of control Means the point at which an electrical installation on or in any premises can be switched off by a user or lessor of the electricity supplied from the point of supply Or the point at which particular part of an electrical installation on or in any premises can be switched off where different users occupy different parts of such premises.

Safety testing The testing of LV infrastructure or service connection with an approved device to determine whether it is energized (alive) or de-energized (dead) at the point of work.

Service connection The part of the LV circuit that connects a customer point of supply (prepaid or billed) to the busbar or MCB in a pole top box, stubby or pillar box.

Service Providers Any Person providing service on the Eskom LV network.(Including Eskom employees)

Shared structure A power line route where LV, MV and/or Telecommunication circuits share the same structure.

Street-light circuits Streetlight circuits include the luminaries and fixtures, and each supply cable or feeder thereto.

Streetlight Worker A person trained and assess to access and work on street lights



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Supervision or supervise

This refers to the overseeing of the actions of a person or persons so as to prevent any act that could be dangerous or in contravention of these regulations.

LV Switching Connecting/disconnecting a circuit from all possible sources of supply by means of opening/closing isolators,

Tariff meter The whole current, Electro-magnetic or Solid State device to measure a customer’s electricity utilization

Meter Technician A Person suitable trained and authorised to perform verification, maintenance of metering, installation, commissioning of Low Voltage metering and monitoring equipment and live method of non- intrusive CT ratio verification.

Meter Reader A Person authorised to access metering cabinet for the purpose of meter reading

Testing Performing tests while circuits are alive to confirm the circuit meets specification in terms of load balancing, phase rotation, polarity, earth leakage trip values, meter functionality, and performance and voltage regulation.

Work Work refers to all physical activities in connection with LV infrastructure and service connections, including LV live work.

Split meters Is the prepaid meter which has the keypad separated from the measuring unit

Low Voltage Worker Any worker doing work on the LV Network. This includes authorised and unauthorised workers

2.3.2 Disclosure classification

Controlled disclosure: controlled disclosure to external parties (either enforced by law, or discretionary).

2.4 Abbreviations

Abbreviation Explanation

ABC Aerial Bundled Conductor

CAP Committee for Accepted Products

DNOC Network Operating Committee

EG Embedded generator

IVR Insulation Vulcanised Rubber (SANS 10142-2: Table 6.1)

LAP List of Accepted Products

LV Low Voltage

MCB Miniature Circuit-breaker

MCCB Moulded Case Circuit Breaker

MV Medium Voltage

OHSA Occupational Health and Safety Act

ORHVS Operating Regulations for High-voltage Systems

PPE Personal Protective Equipment

SANS South African National Standards



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3. Requirements

3.1 Responsibilities

3.1.1 LV Operator

The LV Operator, in accordance with these regulations, shall:

a) ensure the safety of persons and the continuity of the power supply to customers;

b) ensure the plant is prepared for work to commence safely;

c) issue a permit to the LV responsible person;

d) supervise the work on LV apparatus in the absence of an LV responsible person;

e) ensure that no dangerous situation arises;

f) use the correct level of supervision for the task;

g) together with the LV responsible person, do the initial risk assessment;

h) ensure that his/her authorization stays valid;

i) ensure that the LV responsible person has a valid authorization before a permit is issued to such a person.

3.1.2 LV responsible person

The LV responsible person, in accordance with these regulations, shall:

a) ensure the safety of all persons working under his/her permit;

b) ensure that the plant is prepared for work before accepting the permit;

c) receive the permit from the LV Operator;

d) ensure that no dangerous situation arises;

e) use the correct level of supervision for the task;

f) do the risk assessment with his/her team;

g) ensure all tools and equipment are suitable inspected for the work intended.

3.1.3 LV Operator in training

The LV Operator in training accordance with these regulations, shall do all the following under supervision.

a) ensure the safety of persons and the continuity of the power supply to customers;

a) ensure the plant is prepared for work to commence safely;

b) ensure that no dangerous situation arises;

c) together with the LV Operater, do the initial risk assessment;

d) ensure that his/her authorization stays valid;

3.1.4 LV Specific Authorisation

a) Meter reader

b) Metering Technician

c) Connector / Disconnect



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d) Street light worker

4. Access

4.1 Multiple LV circuit conditions

a) When multiple teams work on various sections of an LV network with a common point of isolation, an LV Operator shall issue a permit to the LV responsible persons at the start of the task; this permit shall be cleared on completion of the task.

b) Only a LV Operator or a LV Responsible person under a permit shall access structures containing Bare or IVR overhead conductors, ABC or concentric cable and Distribution boxes or Service Connection

c) Access to LV circuits on shared structures shall be as per the level of authorization.

d) Only LV Operators and the LV responsible person under a permit shall access LV circuits

NOTE: All Contractors doing work on the Street light on Eskom LV Network shall be authorised in terms of these regulations

e) Only LV Operators shall access the LV compartment of multiple circuit situations such as a mini-substation, distribution pillar boxes and pole top boxes, and be issued with a key to access the LV side only as per this regulation, and in terms of any applicable lock management standard adopted.

5. Procedure for working on LV network

5.1 Ground Level only

LV Operator or a LV Responsible Person shall carry out supervision and ensure that they conduct a Risk assessment and complete a workers register prior to commencement of work.

5.2 Above ground level (dead condition)

LV Operator shall ensure that the LV network is prepared and safe to work on.

6. Supervision LV Operator

a) With plant prepared for work, the LV Operator and/or LV Responsible Person must use the appropriate level of supervision and ensure that the work is carried out safely at all times.

b) An unauthorized person that needs to access the LV network can only do so under the supervision of an LV Operator and/or an LV Responsible Person authorized specifically for that task.

c) On a shared structure, supervision shall be in accordance with the Operating Regulations for High Voltage Systems (ORHVS)

d) In the absence of the LV Operator and/or LV Responsible Person to supervise work, the LV Operator and/or LV Responsible Person shall delegate the task of supervising to another suitable authorized person.

e) Should another LV Operator and/or LV Responsible Person not be available, then all workers shall be withdrawn by the LV Operator and/or LV Responsible Person from the work during the absence of the LV responsible person in charge.



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7. Keys

7.1 General responsibilities

7.1.1 LV Operator

Only the LV Operator as per these regulations shall be allowed to access the various sub-networks as defined under 4.1 Access

7.1.2 Designated person

a) The designated person/ his or her delegate shall issue keys.

b) The designated person/his or her delegate shall keep records of the keys issued.

7.1.3 Responsibilities of persons issued with keys

A person issued with a key shall:

a) keep safe custody of keys;

b) not transfer keys to another person;

c) not leave keys hanging on the locks;

d) ensure that doors, gates are locked on leaving;

e) immediately report a lost key to the relevant head of department;

f) surrender keys on Eskom request.

7.2 Prepare LV plant for work

7.2.1 General

a) Only LV Operators shall carry out LV operating activities to the extent of their authorization.

b) LV learner operators shall operate under the supervision of an LV Operator.

c) No persons shall carry out work on any apparatus or lines unless the apparatus or lines have been prepared in accordance with these regulations.

7.2.2 Identification

a) The LV Operator shall ensure that switching is carried out at the source of the circuit to be prepared for work.

b) The LV Operator shall identify all other possible points of supply, which includes the chop-over system and or embedded generator to such a circuit.

c) Where necessary the LV Operator shall record the phase rotation

d) The LV Operator shall identify any shared structures present on the network to be worked on, and will work in accordance with the ORHVS

7.2.3 Switching/linking

a) The LV Operator shall switch the relevant isolators.

b) Back-feeds from customer generators (both chop-over systems and EG) shall be prevented by switching off at both points of supply, locking out and tagging of the isolating points.

NOTE: Where the customer load is known to be high, the opening of the MCBs for the peak load customers shall be switched off before isolators are opened.



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7.2.4 Lockout

a) The circuit-breaker shall be sealed in the open position.

b) The door or cover of the enclosure shall be locked with a non-standard lock or locking device or a guard shall be posted at the isolation point.

c) If the Miniature Circuit-breakers (MCBs) are not provided with safety covers, the MCB sealing wire option shall not apply.

d) Where none of the above can be carried out, the circuit shall be isolated by opening or isolating the primary source (transformer Medium Voltage (MV) side) in accordance with the ORHVS

e) When isolating is obtained through fuses, the fuse element shall be retained by the person doing the operating.

NOTE: MCBs are recognized as isolators on LV infrastructure and service connections.

7.2.5 Tagging LV point of isolation

a) Approved LV tag shall be applied at the switching points (refer to Annex C).

b) The approved LV tag shall be so fixed to prevent it from being accidentally removed.

c) Only LV approved tags shall be used. (refer to Annex C).

7.2.6 Safety testing

a) The LV Operator shall test apparatus at the point of work to determine whether alive or dead.

b) Safety testing shall be done with approved test equipment provided for the purpose.

c) The LV Operator shall ensure that the circuit to be worked on is at zero potential on all relevant phases, including Neutral to Earth.

d) A bare conductor on LV lines shall be tested from the ground using an approved tester.

e) Testing shall be performed using a line tester capable of measuring both AC and DC simultaneously.

f) A circuit containing a voltage above 10 V DC shall be inspected to locate the source of the voltage

7.2.7 Earthing

a) On LV networks, only bare overhead conductors shall be earthed.

b) Such earthing shall be performed in accordance with Earthing standards

7.3 Returning LV plant to service

7.3.1 Preparing plant for returning to service

a) Before returning the plant to service, the LV Operator shall ensure that the plant is ready and that it is safe to do so.

b) The LV Operator and or LV Responsible Person shall ensure that all, equipment and tools are withdrawn from the area, and that the network meets specification and can be energized safely.

c) The LV Operator and or LV Responsible Person shall ensure that workers register is cleared before signing off and apparatus is energized.

d) LV Operators shall ensure that all tags and locks are removed in anticipation of energizing the plant.

e) The customer shall be advised that the circuit must be treated as alive henceforth.



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f) LV Operators shall ensure that all commissioning documentation, where required, is available prior to returning LV plant to service.

7.3.2 Returning plant to service

a) Where LV major maintenance and/or alterations have been made to LV circuits and the circuit will be re-energized by replacing fuses by hand, the circuit insulation will be tested using a 1000 V Insulation resistance tester. This is not necessary in cases where the fuses are replaced from ground level, using an approved fuse replacement device at the end of an operating stick.

b) The circuit will be re-energized, closing fuse holders or operating MCBs.

c) Check for phase rotation where applicable

d) The system voltage will be confirmed directly after the circuit was re-energized.

7.4 Permit system

a) A permit is required for all work performed on LV networks and may only be issued by an authorized LV Operator to an authorized LV Responsible Person.

b) A permit may only be issued when the circuit has been prepared for work in accordance with these regulations.

c) The LV Responsible Person shall explain to the team the nature of the work covered by the permit; isolation points; and the dangers as per the pre-task planning.

d) The LV Responsible Person shall then complete the workers register.

e) A permit shall be completed, detailing the names of the persons that will be working under permit, the significant risks identified in the risk assessment, the risk mitigation steps required and the appropriate Personal Protective Equipment (PPE) to be worn by all employees.

f) The workers register shall be current at all times. If the scope of work is extended, a new risk assessment shall be conducted and a new workers register shall be issued and signed by all involved.

g) This is also applicable when a person is delegated from one Job/Work to another.

NOTE: No work permit is required on LV live work.

7.5 LV live work

a) Any LV live work activity shall be performed in accordance with an Approved Low Volt Live Work Techniques or LV Live Work Task Manual.

b) No live Work shall be performed on a circuit that is on load.

c) Only persons trained, assessed and declared competent and authorized shall do LV live work.

d) Learner operators may only perform LV live work after completion of the Live LV Work Methods and LV Operating Regulations and Perform Work LV Network Training

8. Testing and commissioning

8.1 Energized LV underground and LV overhead infras tructure

The testing of apparatus shall only be done by an LV Operator or by an LV learner operator under the supervision of an LV Operator.

8.2 De-energized LV underground and LV overhead inf rastructure

Testing can be done by an LV Operator or an LV responsible person under a permit.



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9. Authorization

This document has been seen and accepted by:

Name and surname Designation

P Moyo Power Delivery Engineering General Manager

Colin Smith Plant Operating SC Chairperson

J Reinecke Free State Sector Manager

K Kraftt Senior Consultant

10. Revisions

Date Rev Compiler Remarks

Aug 2015 2 N Kgomo Change the warning sign and add EG Operating safety aspect

Dec 2013 1 N Kgomo First issue.

11. Development team

The following people were involved in the development of this document:

• K Kraftt D Sitole

• J Reinecke E Cannon

• E Rakgogo K Hanyane

• K Groenewald T Ntsepe

• J Visagie S Rampou

• N Kgomo V Dyasi

• R Harburn S Makondo

• J Taljaard V Mdladlamba

• V Ngoepe



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Annex A – Low Voltage Authorisation

Document unique identifier;

240-61523882

LOW VOLTAGE AUTHORISATION

Operating Unit: Area of responsibility:

ID photo

Name: Department/Company:

Designation: Unique/ID no.:

Contact no.:

In terms of Eskom's Low Voltage Regulations (240-61523882) you are hereby authorised to perform the

duties as defined below:

NOTE: All details not applicable must be erased

3.1.1 LOW-VOLTAGE OPERATOR

• Perform identification of circuits, switching, linking, locking out, tagging, safety testing and earthing activities: On either or both overhead and underground networks up to 1 000V.

• Perform work without a permit: On either or both overhead and underground networks up to 1 000V.

• Issue of permits: For dead work on either or both overhead and underground networks up to 1 000V.

3.1.2 LOW-VOLTAGE RESPONSIBLE PERSON

• Responsible person restricted to: Perform dead work on either or both overhead and underground networks up to 1 000V covered by a permit.

3.1.3 LOW-VOLTAGE OPERATOR IN TRAINING

• Perform identification of circuits, switching, linking, locking out, tagging and testing activities under supervision of an authorised low-voltage operator: On either or both overhead and underground networks up to 1 000V.

3.1.4 LOW-VOLTAGE SPECIFIC AUTHORISATION a) Meter reader – Perform meter reading tasks: up to 1 000V networks.

b) Metering Technician – Perform metering tasks in accordance with the procedures as listed (ticked off) on the reverse page; up to 1 000V networks.

c) Connection and Disconnection – Perform identification of circuits and switching to perform connection/dis-connection tasks: up to 1 000V networks.

d) Street light worker – Perform street light tasks in accordance with the task manual as listed (ticked off); up to 1 000V networks.

6 SUPERVISION OR SUPERVISE

• People in electrically hazardous locations (ELW 001): Supervision of persons working on networks up to 1 000V as per DST 34-1954.

• Supervision of learner low-voltage operators carrying out the operating: On either or both overhead and underground networks up to 1 000V.

• Supervision of learner low-voltage candidates carrying out work as per task manuals: On either or both overhead and underground networks up to 1 000V.

7 RIGHT TO POSSESS A KEY

• Low Voltage key (Green): To obtain access to either or both overhead and underground network apparatus up to 1 000V.

7.1 LOW-VOLTAGE LIVE WORKING

• See reverse page and perform live work tasks in accordance with the task manuals as listed (ticked off): On either or both overhead and underground networks up to 1 000V.

8 TESTING AND COMMISSIONING

• Energized or de-energize low voltage infrastructure: On either or both overhead and underground networks up to 1 000V



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RESTRICTION/S

• May only perform low voltage tasks on shared structures that carries live MV under supervision of a person that is authorised as per outcome 4a that implies; Take a hand over of apparatus, supervision of people performing work in close proximity conditions.

• No lifting machinery or bucket may be used on a live shared structure.

• This authorisation does not include any high voltage type of activities or tasks.

IMPORTANT NOTES

1) This authorisation supersedes all previous authorisations for this specific area of responsibility.

2) This authorisation expires if the incumbent change from Employment. It is the incumbents responsibility to notify Eskom when this happen.

3) When this authorisation expires or has been withdrawn then the incumbent shall immediately hand his key back to the person whom has issued the key to him/her.

4) The validity of this authorisation is dependent of a valid Low Voltage Regulations (00.00.0000) and First Aid certificates (00.00.0000).

5) The responsibility for renewing this authorisation before expiry rests with the incumbent (At least 3 months in advance).

6) It is the responsibility of the incumbent to provide proof of authorisation on request. Therefore this original document shall be laminated and available on site at all times.

Recommended by

Assessor: Signature: Date:

Authorised by

Designated person: Signature: Date:

Validity period of this authorisation: To

(Date of practical test) (Expiry date)

THE AUTHORISATION DETAILED ABOVE IS UNDERSTOOD BY ME AND I ACCEPT THE DUTIES AND

RESPONSIBILITIES SET OUT THEREIN. CONTRACTORS ACCEPT RESPONSIBILITIES ON OWN RISK.

Incumbent (name print): Signature: Date:

Senior supervisor/ Employer (name print): Signature: Date:



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Reverse page LOW-VOLTAGE DEAD WORK TASK MANUALS TICK OFF LEGEND: AUTHORISED =�, NOT AUTHORISED = STRIKE THROUGH

No Document unique identifier Document title Tick

off

1 240-66129387 Joining LV conductor and aerial bundle conductor (dead work)

2 240-66129433 Removing the meter during cut-off (dead work)

3 240-66129501 Replacement of circuit breaker in the mini substation (dead work)

4 240-66129533 Replacement of circuit breaker on pole mounted service distribution box (dead work)

5 240-66129293 Replacement of DIN rail prepaid meter, service distribution box, surge arrestor and MCB (dead work)

6 240-66129573 Replacement of fuse base / holder (dead work)

7 240-61129617 Replacement of pole mounted service distribution box (dead work)

8 240-66129475 Replacement of the low voltage cables (dead work)

9 240-66129601 Replacement of the pillar box / stubby / meter box (dead work)

LOW-VOLTAGE LIVE WORK TASK MANUALS

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1 DMN_34-109 Low-voltage live work: Connecting/disconnecting S1- customers

1a DMN_34-109 Live working (Installing and connecting a new SDB on the pole)

1b DMN_34-109 Live Working (Replacing a SDB with customer connected to it)

1c DMN_34-109 Live working (Connecting a customer on the SDB already installed on the pole)

1d DMN_34-109 Live working (Installing pole box and connecting the cable and jumpers)

1e DMN_34-109 Live work (Disconnecting a customer)

2 DMN_34-135 Installation of prepaid meters

3 DMN_34-482 Low voltage live work street light installation

4 DMN_34-488 Low voltage live work: installation/removal of a cable in an energised distribution pillar box and livening up/disconnecting of a customer

5 DMN_34-493 Low voltage live work: replacement of a pole-mounted circuit-breaker

6 DMN_34-495 Low voltage live work: replacement of a circuit breaker in an energised distribution pillar box/meter box

7 DMN_34-496 Low-voltage live-work: changing a non-metallic pillar box housing

8 DMN_34-497 Low voltage-live work: installing/replacing LV fuse components

9 DMN_34-498 Low voltage live work: replacing of a fuse base and holder/carrier

10 DMN_34-499 Low voltage live work: replacing of jumpers between conductors and pole-mounted fuses or MCB's

11 DMN_34-500 Low voltage live work: livening up a pole-mounted service distribution box

12 DMN_34-501 Replacing of a connector on a live bare conductor

13 DMN_34-1106 Energy meter kwh reading and kVA reading (indigo poly-phase meter CI.2)

14 DMN_34-1929 Installing and replacing of the stripple fuse unit under live condition

15 DMN_34-2069 MCB’s and LV fuses in mini-subs/brick subs operating

16 240-41751000 Replacement of surge arrester, circuit breaker, measuring unit, service cable for split meters on the pole top box

17 DPC 34-1541 Replacement of ED’s and ECU’s under live conditions.



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METERING MAINTENANCE

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1 240-55198002 Standard for the verification of metering installations

2 240-55246054 Procedure for the commissioning and maintenance of low voltage LPU metering installations (LV)

3 240-55246054 Live method non-intrusive current transformer (CT) ratio verification

4 DPC 34-1711 Procedure for the maintenance of small power user (SPU) metering installations (LV)

DPC 34-673 PROCEDURE FOR LOW VOLTAGE OPERATING.

This Procedure covers only LV Operating (from the LV fuses on the LV Transformer up to the customer’s point of supply. This procedure shall be used in conjunction with the Low Voltage Operating Regulations 240-61523882 and DST 34-328 LV Live Work Standard

240-61523882 LOW VOLTAGE OPERATING REGULATIONS

These Low Voltage (LV) operating regulations contained in this standard are the minimum requirements. Additional requirements shall be applied where necessary.

DST 34-328 LOW-VOLTAGE LIVE WORKING

This standard is applicable to all Authorized Persons who perform live work on LV systems, including contractors doing work for Eskom.

DST 34-1954 SUPERVISION OF PEOPLE IN ELECTRICALLY H AZARDOUS LOCATIONS

This standard is applicable to all Authorized Persons who perform supervision of people working on LV systems, including contractors doing work for Eskom.

THE REQUIREMENTS OF THE TASK MANUALS/STANDARDS/PROCEDURES IS UNDERSTOOD BY ME AND I

ACCEPT THE DUTIES AND RESPONSIBILITIES SET OUT THEREIN.

Incumbent (name print): Signature: Date:

Senior supervisor/ employer (name print): Signature: Date:



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Annex B – Low Voltage Permit

.



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Annex C – Low Voltage Warning Sign

Title: LV OPERATING REGULATIONS - National Treasury · Energy control unit Is 20 A Tariff meter...

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