🔥🔥 Don’t Miss Out on Our End of Autumn Sale. If you have any questions, feel free to click the bottom right corner to contact our customer service..

Concat us[email protected]
Shopping Cart

No products in the cart.

🔍
BS EN 50156-1:2015

BS EN 50156-1:2015

$215.11

Electrical equipment for furnaces and ancillary equipment – Requirements for application design and installation

Published By Publication Date Number of Pages
BSI 2015 80
PDF Format Searchable Printable Preview Now
Guaranteed Safe Checkout
Categories: ,

If you have any questions, feel free to reach out to our online customer service team by clicking on the bottom right corner. We’re here to assist you 24/7.
Email:[email protected]

This European Standard applies to the application design and installation of electrical equipment, control circuits and safety-related systems for furnaces which are operated with solid, liquid or gaseous fuels and their ancillary equipment. It specifies requirements to meet the operating conditions of furnaces, to reduce the hazards of combustion and to protect the heated systems from damage e.g. by overheating.

Such furnaces and the electrical equipment may be part by way of example of the following plant:

  1. water heating systems;

  2. steam boiler installations (steam and hot-water boilers) and heat recovery steam boilers;

    NOTE 1

    The requirements of this standard apply according to the electrical equipment of electrically heated steam boilers.

    NOTE 2

    Seagoing vessels and offshore facilities are governed by International Maritime Law and as such are not within the scope of this standard. These requirements may be used for such facilities.

  3. warm air heaters;

  4. hot-gas heaters;

  5. heat exchanger systems;

  6. combustion chambers of stationary turbines;

  7. as long as no other standard is applicable for combined heat and power stations, we recommend the use of the requirements of this standard;

  8. This standard may also be used as reference for electrical equipment requirements for thermoprocessing equipment.

    The requirements in this standard are not applicable to electrical equipment for:

  9. non-electrically heated appliances and burner control systems for household and similar purposes;

  10. furnaces using technologies for the direct conversion of heat into electrical energy;

  11. combustion chambers of non-stationary prime movers and turbines;

  12. central oil supply systems for individual heating appliances;

  13. furnaces using solid fuels for heating purposes for household use with a nominal thermal output up to 1 MW;

  14. furnaces which are used to heat process fluids and gasses in chemical plant.

This European Standard may be used as a basis for the requirements placed on electrical equipment for furnaces, which are excluded from its field of application.

PDF Catalog

PDF Pages PDF Title
11 1 Scope
12 2 Normative references
13 3 Terms and definitions
21 4 General requirements
4.1 General considerations
22 4.2 Environmental requirements
4.2.1 General
4.2.2 Environmental and operating conditions
4.2.3 Electromagnetic compatibility
4.2.3.1 Electromagnetic compatibility – Emission requirements
23 4.2.3.2 Electromagnetic compatibility – Immunity requirements
4.2.3.3 Performance criteria
4.2.4 Ambient temperature
4.2.5 Humidity
24 4.2.6 Contamination
4.2.7 Vibration and shock
4.2.8 Equipment used in flammable atmospheres
4.3 Power supply
4.3.1 General
4.3.2 Power stations
5 Incoming supply connections and devices for disconnecting and emergency stop
5.1 Incoming supply and equipment connections
5.1.1 Types of connection
25 5.1.2 Terminations
5.1.2.1 General
5.1.2.2 Incoming supply terminals
5.1.2.3 Connections to remote electrical equipment
26 5.2 Devices for disconnecting power supplies
5.2.1 General
27 5.2.2 Disconnecting switch
5.2.3 Excluded circuits
28 5.3 Emergency stop
5.3.1 General
5.3.2 Emergency stop device for furnaces in heating installations
5.3.3 Emergency stop device for other furnaces, e.g. steam boilers
5.3.4 Application as isolating switch
6 Protection against electric shock
6.1 Protection against direct contact
29 6.2 Protection against indirect contact
7 Environmental protection of the equipment
7.1 Protection against ingress of solid foreign bodies
7.2 Protection against water
8 Equipotential bonding
8.1 General
8.2 Equipotential bonding as a protective measure in case of indirect contact
30 8.3 Equipotential bonding for the purpose of lightning protection
8.4 Functional equipotential bonding
31 9 Auxiliary circuits
9.1 Supply to auxiliary circuits
9.1.1 Supply from 3-phase or a.c. systems
9.1.2 Supply from d.c. mains
9.1.2.1 General
9.1.2.2 Supply from more than one d.c. source
32 9.1.2.3 Supply from a d.c. source with an mid-point conductor
9.1.2.4 Supply from an isolated d.c. source
9.1.3 Auxiliary circuits connected between the line conductors
9.2 Voltage for auxiliary circuits
9.2.1 Operating voltage of auxiliary circuits
9.2.2 Preferred nominal voltages
9.3 Connection to the protective conductor
9.4 Overcurrent protection of auxiliary circuits
9.4.1 Rating of overcurrent protective devices
33 9.4.2 Overcurrent protection of auxiliary circuits connected to the protective conductor
9.4.3 Overcurrent protection of auxiliary circuit with the middle conductor connected to the protective conductor
9.4.4 Overcurrent protection of auxiliary circuits with no electrical connection to the protective conductor
9.4.5 Overcurrent protection of control system supply transformers
9.4.6 Rating and setting of overcurrent protection
9.5 Measures to prevent danger from short circuits to exposed conductive parts or earth
34 9.6 Influence of capacitance and leakage resistance
10 Additional requirements for the application of a safety-related system
10.1 General safety requirements
10.1.1 Safety lifecycle requirements for a safety-related system
36 10.1.2 Planning
10.1.2.1 General
10.1.2.2 Operation and maintenance planning
37 10.1.2.3 Validation planning
38 10.1.2.4 Installation and commissioning planning
39 10.2 Concept and scope definition
40 10.3 Hazard and risk analysis
41 10.4 Safety requirements allocation
42 10.5 Design
10.5.1 General requirements
43 10.5.2 Design of the safety-related system
48 10.5.3 Measures to avoid faults
49 10.5.4 Consideration of times
10.5.5 Hardware design
10.5.5.1 General requirements of the hardware
10.5.5.2 Hard-wired section of the safety-related system
51 10.5.5.3 Fault exclusions
54 10.5.5.4 Additional requirements for circuit breakers
10.5.6 Plant specific application software
10.5.6.1 General
10.5.6.2 Requirements for plant-specific application software
56 10.5.6.3 Requirements for design
10.5.6.4 Measures for avoiding faults
57 10.5.6.5 Code implementation
10.6 Installation and commissioning
10.7 Safety validation
10.7.1 System integration of hardware and software
58 10.7.2 Fault assessment for the system integration of hardware and software
59 10.7.3 Type approval
10.7.4 Plant-specific test
10.8 Operation and maintenance
60 10.9 Modification and retrofit
10.9.1 General
10.9.2 Measures against unauthorised changes or overriding
61 11 Electrical equipment
11.1 General requirements
11.2 Creepage distances and clearances
11.3 Motors
11.4 Transformers
62 11.5 Switching devices
11.6 Operator control devices
11.7 Immersion electrodes
11.8 Trace heating systems
12 Cables and cords
12.1 General requirements
63 12.2 Insulation
12.3 Current-carrying capacity
12.4 Conductors of separate circuits
64 13 Warning signs and item designation
13.1 Warning signs
13.2 Functional identification
13.3 Item designations
14 Technical documentation
14.1 General
65 14.2 Documentation describing functions and connections
14.2.1 General
14.2.2 Documentation describing functions
14.2.3 Documentation describing connections
14.2.4 Documentation describing the process
14.2.5 Documentation of the risk assessment
66 14.3 Documents for type approved components
14.4 Documentation of the application software
67 Annex A (informative)Configurations of programmable safety devices (PSD) with reference to EN 61508
A.1 General
68 A.2 Configuration 1oo1
A.3 Configuration 1oo1D
69 A.4 Configuration 1oo2
70 A.5 Configuration 1oo2D
71 A.6 Configuration 2oo3
72 A.7 Configuration 2oo3D
74 Annex B (informative)Lifecycle of programmable safety device
75 Annex C (informative)Management of functional safety
76 Annex D (informative)Examples of determining the safety integrity level SIL using the risk graph method
D.1 General
D.2 Risk parameter C (Consequences of the hazardous event)
D.3 Risk parameter F (Frequence and duration of the time spent in the hazard area)
D.4 Risk parameter P (Possibility of preventing the hazardous event)
D.5 Risk parameter W (Likelihood of occurrence of the hazardous event)

Related products

BS EN 50156-1:2015
$215.11