EN 50131-6:2008

SLOVENSKI STANDARD
01-julij-2008
1DGRPHãþD
SIST EN 50131-6:1999
Alarmni sistemi - Sistemi za javljanje vloma in ropa - 6 del: Napajalniki
Alarm systems - Intrusion and hold-up systems -- Part 6: Power supplies
Alarmanlagen - Einbruch- und Überfallmeldeanlagen -- Teil 6: Energieversorgungen
Systémes d'alarme - Systémes d'alarme contre l’intrusion et les hold-up -- Partie 6:
Alimentation
Ta slovenski standard je istoveten z: EN 50131-6:2008
ICS:
13.310 Varstvo pred kriminalom Protection against crime
13.320 Alarmni in opozorilni sistemi Alarm and warning systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 50131-6
NORME EUROPÉENNE
January 2008
EUROPÄISCHE NORM
ICS 13.310 Supersedes EN 50131-6:1997

English version
Alarm systems -
Intrusion and hold-up systems -
Part 6: Power supplies
Systèmes d'alarme -  Alarmanlagen -
Systèmes d'alarme contre l’intrusion Einbruch- und Überfallmeldeanlagen -
et les hold-up - Teil 6: Energieversorgungen
Partie 6: Alimentation
This European Standard was approved by CENELEC on 2007-12-01. CENELEC members are bound to comply
with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard
the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.

This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and notified
to the Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the
Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2008 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50131-6:2008 E
Foreword
This European Standard was prepared by the Technical Committee CENELEC TC 79, Alarm systems.
The text of the daft was submitted to the Unique Acceptance Procedure and was approved by
CENELEC as EN 50131-6 on 2007-12-01.
This European Standard supersedes EN 50131-6:1997 + corrigendum April 1998.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2008-12-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2010-12-01

EN 50131 will consist of the following parts, under the general title Alarm systems - Intrusion and hold-
up systems:
Part 1 System requirements
Part 2–2 Intrusion detectors – Passive infrared detectors
Part 2–3 Intrusion detectors – Microwave detectors
Part 2–4 Intrusion detectors – Combined passive infrared / Microwave detectors
Part 2–5 Intrusion detectors – Combined passive infrared / Ultrasonic detectors
Part 2–6 Intrusion detectors – Opening contacts (magnetic)
Part 2–7–1 Intrusion detectors – Glass break detectors – Acoustic
Part 2–7–2 Intrusion detectors – Glass break detectors – Passive
Part 2–7–3 Intrusion detectors – Glass break detectors – Active
Part 3 Control and indicating equipment
Part 4 Warning devices
Part 5–3 Requirements for interconnections equipment using radio frequency techniques
Part 6 Power supplies
Part 7 Application guidelines
Part 8 Security fog devices
- 3 - EN 50131-6:2008
Contents
Introduction . 5
1 Scope. 6
2 Normative references .6
3 Definitions and abbreviations . 7
3.1 Definitions. 7
3.2 Abbreviations . 9
4 Functional requirements . 9
4.1 General. 9
4.2 Monitoring of PS . 11
4.3 APS Capability. 14
4.4 Recharging for PS type A. 14
4.5 Over-voltage Protection .15
4.6 Short Circuit Protection . 15
4.7 Overload Protection . 15
4.8 Deep Discharge Protection . 15
4.9 Automatic changeover to APS . 15
4.10 Ripple . 15
4.11 Tamper Security . 15
4.12 Environmental. 17
4.13 Safety . 17
4.14 EMC . 18
4.15 Electrical . 18
5 Marking. 19
6 Documentation. 19
7 Tests . 20
7.1 General test conditions . 21
7.2 Reduced Functional Test . 21
7.3 PS Rating . 22
7.4 Output Voltage Stability - Gradual Load Variation . 23
7.5 Output Voltage Stability – Switched Load Variation. 24
7.6 Signalling: Loss of EPS. 25
7.7 Signalling: Storage Device – Low Voltage. 26
7.8 Signalling: Storage Device – Failure . 27
7.9 Signalling: Low Output Voltage . 28
7.10 Signalling: Power Unit Failure . 29
7.11 Signalling: Power Unit Failure – SD Charging . 29
7.12 Remote Test . 30
7.13 SD Recharging . 31
7.14 Over-voltage Protection .32
7.15 Short Circuit protection. 33
7.16 Overload Protection . 34
7.17 Deep Discharge Protection . 35
7.18 Automatic Changeover to APS. 36

7.19 Tamper Protection . 36
7.20 Tamper Protection – Access to the inside of the housing . 4
7.21 Tamper Detection – Removal from Mounting . 38
7.22 Tamper Detection – Penetration of the housing . 39
7.23 Environmental and EMC . 39
7.24 Marking and Documentation . 40
Annex A (informative) Determination of Storage device failure . 41
Figure 1 — Power Supply Types . 10
Table 1 — Power Supply Functions. 11
Table 2 — Power Supply Signalling. 12
Table 3 — Maximum Time to Detect and Signal Storage Device – Low Voltage. 13
Table 4 — Tamper Detection. 16
Table 5 — Removal from Mounting . 16
Table 6 — Environmental and EMC Tests and Severity . 17
Table 7 — Tests for PS according to type . 20
Table A.1 — Minimum Load times for Common Storage Devices in Use in I&HAS . 41

- 5 - EN 50131-6:2008
Introduction
This European Standard deals with power supplies (PS) of intrusion and hold-up alarm systems
(I&HAS) installed in buildings. It includes devices that are installed inside or outside of the supervised
premises and mounted in indoor or outdoor environments.

1 Scope
This European Standard specifies the requirements, performance criteria and testing procedures for
PS to be used as part of Intrusion and Hold up Alarm Systems. The PS shall either be an integral part
of an I&HAS component or stand-alone. The control functions of the PS may be incorporated as part
of the PS device, or may be provided by another I&HAS component e.g. a CIE.
This European Standard is not applicable when the PS requirements for I&HAS components are
included within the relevant product standard.
The requirements correspond to each of the four security grades given in the European Standard
EN 50131-1, Alarm systems - Intrusion and hold-up systems - Part 1: System requirements.
Requirements are also given for four environmental classes covering applications in internal and
outdoor locations.
This standard covers mandatory functions which shall be provided on all PS and optional functions
which may be provided.
Other functions associated with I&HAS not specified in this standard may be provided. Such functions
shall not affect the requirements of any mandatory or optional functions.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
Publication Year Title
EN 50130-4 Alarm systems - Part 4: Electromagnetic compatibility - Product
family standard: Immunity requirements for components of fire,
intruder and social alarm systems
EN 50130-5 Alarm systems - Part 5: Environmental test methods
EN 50131-1 Alarm systems - Intrusion and hold-up systems - Part 1: System
requirements
EN 60065  Audio, video and similar electronic apparatus - Safety requirements
(IEC 60065)
EN 60068-1 Environmental testing - Part 1: General and guidance
(IEC 60068-1)
EN 60529 Degrees of protection provided by enclosures (IP code)
(IEC 60529)
EN 60950 Series Information technology equipment - Safety
(IEC 60950 series, partly modified)
EN 61000-6-3 Electromagnetic compatibility (EMC) - Part 6-3: Generic standards -
Emission standard for residential, commercial and light-industrial
environments (CISPR/IEC 61000-6-3)
EN 62262 Degrees of protection provided by enclosure for electrical
equipment against external mechanical impacts (IK code)
(IEC 62262)
- 7 - EN 50131-6:2008
3 Definitions and abbreviations
3.1 Definitions
For the purposes of this European Standard, the following definitions apply in addition to those given
in EN 50131-1.
3.1.1
alternative power source (APS)
power source capable of powering the I&HAS for a predetermined time when the EPS is unavailable
3.1.2
APS operating period
period during which the APS is supporting an I&HAS when the EPS has been lost
3.1.3
deep discharge protection
protection which avoids damage to the storage device when the level of discharge is beyond the level
specified by the storage device manufacturer
3.1.4
external power source (EPS)
energy supply external to the I&HAS which may be non-continuous.
NOTE 1 For types A and type B PS only.
NOTE 2 The EPS is provided by the PPS or the SPPS.
3.1.5
float charging
a condition of the SD where a charging voltage is applied to hold the SD at nominally 100 % charge
3.1.6
independent power outputs
individual power output to the I&HAS having its own protection against short circuit and overload.
Each output may have provision for more than one connection
3.1.7
low output voltage
voltage below the minimum power output voltage
3.1.8
maximum power output voltage
maximum rated voltage of the PS at each independent power output as specified by the PS
manufacturer under normal operating conditions
3.1.9
minimum power output voltage
minimum rated voltage of the PS at each independent power output as specified by the PS
manufacturer under normal operating conditions
3.1.10
normal operating condition
conditions applying when the PS is mounted according to the PS manufacturer’s instructions, within
the range of the designated environmental class, the applied load is within the rated output, the SD
has sufficient charge to maintain the minimum power output voltage and for type A and type B, any
applied and available EPS is within specified range
NOTE Normal operating condition of a PS includes APS operation.

3.1.11
open by normal means
opening of the equipment housing by the procedure defined by by the manufacturer
3.1.12
over-voltage protection
protection of the PS output against excessive high output voltage due to failure of one or more PS
components under normal operating conditions
3.1.13
power output
output of the PS that supplies energy to the I&HAS
3.1.14
power supply (PS)
device that stores, provides and also modifies or isolates (electrical) power for an I&HAS or part
thereof, comprising of a PU and SD as a minimum
3.1.15
power supply failure
a condition in which a SD failure or a PU failure is present
3.1.16
power unit (PU)
device that provides and also modifies or isolates (electrical) power for an I&HAS or part thereof and
for the SD if required
3.1.17
power unit failure
a condition of the PU where it cannot supply the rated power output and/or for a PS type A cannot
recharge the SD
3.1.18
prime power source (PPS)
energy source capable of supporting the I&HAS for extended periods e.g. mains supply
3.1.19
rated output
the total continuous output current that can be supplied by the PS to the I&HAS through its
independent power outputs under normal operating conditions
3.1.20
ripple
oscillating voltage superimposed onto the dc voltage at an independent output
3.1.21
standby period
time period during which the APS is capable of supporting an I&HAS in the event of failure of the EPS
3.1.22
storage device (SD)
device which stores energy e.g. a battery
3.1.23
storage device – failure
a condition of the SD where it cannot supply the rated power output of the PS at the minimum power
output voltage
- 9 - EN 50131-6:2008
3.1.24
storage device – low voltage
voltage specified by the PS manufacturer which indicates that the storage device is nearly discharged
3.1.25
supplementary prime power source (SPPS)
energy source independent of the PPS capable of supporting the I&HAS for extended periods e.g.
standby generator
3.2 Abbreviations
For the purposes of this European Standard the following abbreviations are used:
APS Alternative Power Source
CIE Control and Indicating Equipment
EPS External Power Source
I&HAS Intruder and Hold-up Alarm System
PPS Prime Power Source
PS Power Supply
PU Power Unit
SD Storage Device
SPPS Supplementary Prime Power Source
ac alternating current
dc direct current
4 Functional requirements
4.1 General
The PS shall supply power to the components of the I&HAS continuously.
There are three types of PS, which are independent of security grade. These types are illustrated in
Figure 1.
The PS types are defined in EN 50131-1. Storage devices required to meet the I&HAS standby
requirements as specified in EN 50131-1 may be distributed in more than one PS.

PPS
EPS Independent
power outputs
SPPS PU
to I&HAS
components
APS
SD
Type A PS PS
I&HAS
PPS
EPS Independent
power outputs
SPPS PU
to I&HAS
components
APS
SD
Type B PS PS
I&HAS
Independent
power outputs
PU
to I&HAS
components
Type C PS PPS
SD
PS
I&HAS
NOTE For PS types A and B, where there is no SPPS, the PPS and EPS are identical.
Figure 1 — Power Supply Types
- 11 - EN 50131-6:2008
Depending upon the security grade and PS type, the PS shall have the functionality as defined in
Table 1. If a function is provided that is optional for a particular grade and a claim of compliance is
made, it shall meet the applicable requirements for the grade for which compliance is claimed.
Table 1 — Power Supply Functions
PS Type
Function Grade
A B C
Detection of Loss of EPS 1 – 4 M M n/a
Detection of Storage Device – 1 – 4 M M M
Low Voltage
1 – 2 Op Op n/a
Detection of Storage Device –
Failure
3 – 4 M Op n/a
1 – 2 Op Op n/a
Detection of Low Output Voltage
3 – 4 M M n/a
1 – 2 Op Op n/a
Detection of Power Unit failure
3 – 4 M M n/a
1 – 2 Op Op Op
Over-voltage Protection
3 – 4 M M Op
Short Circuit Protection 1 – 4 M M M
Overload Protection 1 – 4 M M M
1 – 2 Op Op n/a
a
SD Deep Discharge Protection
3 – 4 M M n/a
1 – 3 Op Op n/a
Remote Test
4 M Op n/a
Tamper Security 1 – 4 M M M
a
Where Deep Discharge will damage the SD.
M = Mandatory
Op = Optional
n/a = Not applicable
4.2 Monitoring of PS
The PS shall generate fault signals or messages for communication to the CIE according to Table 2.
Monitoring signals or messages shall be fail safe such that total loss of function of the PS will be
recognised as a fault condition by the I&HAS.

Table 2 — Power Supply Signalling
Storage Power
Device Low Output Tamper
EPS Fault APS Fault
Voltage Fault signal or
Condition signal or signal or
signal or signal or message
message message
message message
Loss of EPS M NP n/a NP NP
Storage Device – Low
NP M n/a NP NP
Voltage: PS type A, B
Storage Device – Low
n/a NP M NP NP
Voltage: PS type C
a
Storage Device – Failure NP M n/a NP NP
a
Low Output Voltage Op Op Op M NP
a
Power Unit – Failure NP NP NP M NP
Tamper Detection NP NP NP NP M
Remote Self Test NP Op NP NP NP
a
Dependent upon security grade.
M = Mandatory
NP = Not permitted
n/a = Not applicable
Op = Optional
4.2.1 Loss of EPS
A loss of EPS condition shall be detected within 1 s.
When the EPS has been continuously disconnected for a minimum of 1 s and a maximum of 60 s, an
EPS fault signal or message shall be generated.
After a loss of EPS, when the EPS is restored the re-connection condition shall be detected within 1 s.
When the EPS has been continuously re-connected for a minimum of 1 s and a maximum of 60 s an
EPS fault signal or message shall be removed.
4.2.2 Storage Device – Low Voltage
The voltage of the storage device shall be monitored to detect an SD low voltage condition.
For PS types A and B:
An APS Fault signal or message shall be generated according to Table 2 and within the maximum
time periods defined in Table 3, when the voltage of the SD falls below a value as specified by the
PS manufacturer.
An APS Fault signal or message shall be removed according to Table 2 and within the maximum
time periods defined in Table 3, when the voltage of the SD rises above a value specified by the
PS manufacturer.
NOTE 1 A disconnected SD is considered a special case of low voltage.
NOTE 2 For PS type A it is not necessary to monitor for storage device low voltage when the storage device is undergoing
charging.
- 13 - EN 50131-6:2008
For PS type C:
A storage device low voltage fault signal or message shall be generated within the maximum time
periods defined in Table 3, before the SD reaches a condition such that it is unable to provide its
rated output for longer than a minimum of 30 days.
A storage device low voltage fault signal or message shall be removed within 10 s according to
Table 2, when the voltage of the SD rises above the low value specified by the PS manufacturer
e.g. following replacement of the battery.
For all PS types, the PS manufacturer shall declare in his documentation the voltage of the SD that
will generate this fault signal or message.

Table 3 — Maximum Time to Detect and Signal Storage Device – Low Voltage
Type of PS Grade 1 Grade 2 Grade 3 Grade 4
A and B 5 min 5 min 5 min 5 min
a
C 240 min 120 min 120 min 120 min
a
For wirefree devices with intermittent operation e.g. wireless hold-up trigger device, it is permissible for communication of
the low voltage fault signal or message to be delayed until the first available transmission.

4.2.3 Storage Device – Failure
For PS type A, a SD failure condition shall be detected within 24 h of failure of the SD.
An APS Fault signal or message shall be generated within 10 s of detection of SD failure.
Examples of methods deemed suitable to determine a storage device failure condition are given in
Annex A.
The APS Fault signal or message shall be removed within 10 s of detection of a normal storage device
condition.
If the PS is designed to be connected to two or more storage devices in a parallel configuration in
accordance with the guidance of the SD manufacturer, they shall be monitored as separate storage
devices. An APS Fault signal or message shall be generated upon detection of failure for any one
device. The APS fault signal or message shall be removed only when all devices no longer show a
failure condition.
These tests shall only be applied when the EPS is available.
Following disconnection and reconnection of the EPS, this test may be delayed for up to 24 h to
enable recharge of the SD.
4.2.4 Low Output Voltage
For PS types A and B, Grades 3 and 4, a Power Output Fault signal or message shall be generated
within 10 s of a low output voltage occurring on one or more independent power outputs e.g. due to
failure in the power supply or intervention of an output protection device.
The Power Output Fault signal or message shall be removed within 10 s of the voltage on all
independent power outputs rising above the minimum power output voltage.
4.2.5 Power Unit failure
When the EPS is present, for PS types A and B, Grades 3 and 4, the PU shall be monitored to detect
if it can no longer provide the rated voltage to the independent power outputs from the EPS.
NOTE  This includes a failure of the PU which would not normally result in a low power output voltage due to the SD operating
as the APS.
When the EPS is present, for PS type A, Grades 3 and 4, the PU shall be monitored to detect if it can
no longer recharge the SD.
A Power Output Fault signal or message shall be generated within 10 s of either of these conditions
occuring.
The Power Output Fault signal or message shall be removed within 10 s of the restoration of the
normal operation of the PU.
4.2.6 Remote Test
PS type A at Grade 4 shall have means to receive a signal or message to trigger the PS internal tests
of Storage Device Failure.
The resulting test sequence shall not prevent the PS from operating in accordance with Tables 1
and 2.
The PS shall acknowledge receipt of the remote test request within 10 s of receipt of the remote test
request. If no dedicated acknowledge facility is available, the APS Fault signal or message
shall be used to communicate the remote test request acknowledgement.
When the test is initiated, the PS shall not remain in test mode for a period in excess of 60 s.
If the result of the test is a pass, the APS Fault signal or message shall be removed within 60 s of
receipt of the remote test request.
If the result of the test is a fail, the APS Fault signal or message shall remain present.
4.3 APS Capability
A PS types A and B shall be capable of continuously supplying its rated output to the I&HAS in the
event of interruption of the EPS.
The PS manufacturer shall specify the minimum and maximum storage device capacity that can be
used with the PS
The PS manufacturer shall provide sufficient information to enable calculation of the minimum time
period that the PS can continuously supply its rated output when fitted with a range of storage devices.
NOTE Where the SD is a battery, it is not necessary to take into account the differences in available capacity at differing levels
of discharge rate and a simple relationship between battery capacity (Ah), time (h) and current available (A) is acceptable.
4.4 Recharging for PS type A
When fitted with a storage device of capacity as defined by the PS manufacturer, the power supply
shall be capable of recharging the storage device to 80 % of this storage device capacity following
discharge to the minimum level in accordance with 7.1.5.
The storage device shall be automatically recharged from the EPS within the maximum recharge
periods as specified in EN 50131-1.
NOTE If the SD is faulty and its terminal voltage is too low for safe recharging, then it is permissible for the PS not to
automatically recharge the SD when the EPS is reconnected providing the APS fault signal or message is still active.
The PS shall be capable of supplying its rated output continuously during recharge of the storage
device.
The charging characteristics used by the PS to recharge the SD shall remain within the limits
recommended by the SD manufacturer.
A Grade 4 PS shall ensure that during float charging, the charging characteristics are within the SD
manufacturer’s specifications for the range of SD temperatures reached for the environmental class.

- 15 - EN 50131-6:2008
4.5 Over-voltage Protection
To prevent damage being caused to other I&HAS components due to failure of any single PS
component, PS Grades 3 and 4 shall include protection to ensure that the voltage at any independent
power output does not exceed 125 % of the maximum power output voltage.
4.6 Short Circuit Protection
Each independent power output shall be protected against short circuit in the connected load.
Following removal of the short circuit and reset of any protection device, all independent power
outputs shall continue to operate normally.
A short circuit in the load connected to any independent power output shall not reduce the functionality
of any other independent output.
Any transients that are generated during operation of the protection shall meet the requirements of
4.15.7.
4.7 Overload Protection
Each independent power output shall be protected against overload condition in the connected load.
Following removal of the overload and reset of any protection device, all independent power outputs
shall continue to operate normally.
An overload condition on any independent power output shall not reduce the functionality of any other
independent output.
Any transients that are generated during operation of the protection shall meet the requirements of
4.15.7.
4.8 Deep Discharge Protection
When deep discharge of a storage device may cause damage to the storage device, protection shall
be provided in PS for Grades 3 and 4. The PS manufacturer shall declare the voltage of the SD below
which this protection shall operate and this shall be less than the minimum power output voltage.
4.9 Automatic changeover to APS
Any transients that are generated during the changeover period between EPS and APS operation
shall meet the requirements of 4.15.7.
4.10 Ripple
For PS with dc outputs, the peak to peak ripple content of the voltage at any independent power
output shall be as specified by the PS manufacturer and shall not exceed 5 % of the maximum power
output voltage.
4.11 Tamper Security
Where the PS is housed with one or more components of an I&HAS, the tamper security requirement
of the PS shall be that of those components.
Where the PS is housed in a separate enclosure, the enclosure shall meet the tamper security
requirements of this section.
4.11.1 Tamper Protection
The construction of the power supply enclosure shall meet the tamper protection requirements of
EN 50131-1.
Provision shall be made to allow adequate fixing of the enclosure to the mounting surface.
NOTE Impact resistance requirements are covered by the environmental requirements of Clause 7.
4.11.2 Tamper Detection
A tamper signal or message shall be generated according to the requirements as specified in Table 4
and before access can be gained to override the detection.
Table 4 — Tamper Detection
Event to be detected Grade 1 Grade 2 Grade 3 Grade 4
Access to the inside of the M M M M
housing
Removal from mounting Op Op M M
Penetration of housing Op Op Op M
M = Mandatory
Op = Optional
4.11.2.1 Access to the inside of the housing
All components, means of adjustment and mounting screws, which, when interfered with,
could adversely affect the operation of the PS, shall be located within the PS housing. Such
access shall require the use of an appropriate tool and depending on the grade as specified in Table
4 shall generate a tamper signal or message before access can be gained.
It shall not be possible to gain such access without generating a tamper signal or message or causing
visible damage.
4.11.2.2 Removal from mounting
Attempts to remove the power supply from its mounting surface for a distance greater than that
defined in Table 5 shall generate a tamper signal or message according to Table 4.
It should not be possible to defeat the removal from mounting detection by sliding a 1 mm thick blade
between the mounting surface and the power supply.
Table 5 – Removal from Mounting
Grade 1 Grade 2 Grade 3 Grade 4
Maximum distance before tamper
10 mm 10 mm 5 mm 5 mm
detection
4.11.2.3 Penetration of the housing
When mounted according to the PS manufacturer’s instructions, it shall not be possible to penetrate
the housing of the PS through any of its accessible faces with a metal tool creating a hole of 4 mm or
greater without generating a tamper signal or message according to Table 4.
NOTE The aim is to detect a reduction of the original integrity of the housing. The definition of the hole diameter is to set an
objective threshold for both product design and performance verification.

- 17 - EN 50131-6:2008
4.12 Environmental
The environmental classification is described in EN 50131-1. All the relevant environmental tests shall
be carried out in accordance with EN 50130-5.
Where the PS is housed with one or more components of an I&HAS, the environmental requirement of
the PS shall be that of those components. In addition, for type C PS, the environmental test shall be
made with the SD inside the component with the exception of the endurance test and this SD shall be
fully charged.
For operational tests, the power supply shall not generate tamper, fault or other signals or messages,
when subjected to the specified range of environmental conditions and shall continue to supply its
continuous rated output.
For endurance tests, the power supply shall continue to meet the requirements of this standard after
being subjected to the specified range of environmental conditions.
See Table 6 for the relevant tests for each environmental class. These tests apply to all security
grades.
Table 6 — Environmental and EMC Tests and Severity
Reduced Class Class Class Class
Test Type
functional test: I II III IV
1 B, D, A Dry heat Operational M M M M
2 B, A Dry heat Endurance n/a n/a n/a M
3 B, D, A Cold Operational M M M M
4 B, D, A Damp heat, steady state Operational M n/a n/a n/a
5 B, A Damp heat, steady state Endurance M M M M
a a a a
6 B, D, A Temperature change Operational M M M M
7 B, D, A Damp heat, cyclic Operational n/a M M M
8 B, A Damp heat, cyclic Endurance n/a n/a M M
a a
9 B, D, A Water ingress Operational M M M M
b b
10 B, A Sulphur Dioxide (SO) Endurance n/a n/a M M
11 B, A Salt mist, cyclic Endurance n/a n/a n/a M
12 B, C, A Impact Operational M M M M
13 B, C, A Shock Operational M M M M
14 B, A Vibration, sinusoidal Operational M M M M
15 B, D, A EMC (Susceptibility) Operational M M M M
16 B, E EMC (Emissions) Operational M M M M
B Before conditioning.
D During conditioning, as specified in EN 50131-1 (Clause 12), EN 50130-5 and EN 50130-4.
A After conditioning and recovery period.
C Monitor during conditioning.
E During conditioning, as specified in EN 50131-1, EN 50131-3 and EN 50131-6, tests have to be performed as
specified in EN 61000-6-3.
M Mandatory.
n/a Not applicable.
a
Portable equipment only.
b
Only for equipment having a tamper detection device.

4.13 Safety
The power supply shall provide protection against electrical shock and consequential hazards in
accordance with the requirements of EN 60950 series or EN 60065.
4.14 EMC
For all grades, the power supply shall not generate, or be affected by, the EMC conditions and
severity levels defined in EN 50130-4 and EN 61000-6-3.
4.15 Electrical
4.15.1 Connections
The means of electrical connection shall be appropriate for the physical size and current carrying
capacity of the required conductors.
Terminal blocks and other components utilised for connections shall be identifiable with numbers or
other marks specified in the documentation.
4.15.2 Rated Output
Under normal operating conditions and when fitted with a SD of maximum capacity as defined by the
PS manufacturer, the power supply shall deliver its rated output voltage / current continuously, limited
during APS operation to the time periods specified in EN 50131-1, via its independent power outputs
into any load except as may be otherwise specified by the PS manufacturer.
The power requirement of any integrated component e.g. CIE, or PS control components shall be
declared in the PS manufacturer’s documentation.
NOTE  There should be sufficient information contained in the PS documentation to enable the PS user to correctly determine
the power that is available to any other connected I&HAS components.
4.15.3 Output Voltage Range
Under normal operating conditions, the voltage at the independent power outputs shall lie between the
minimum power output voltage and the maximum power output voltage with a load connected and
drawing no greater than the rated output of the power supply.
4.15.4 Input Voltage Range
For power supplies types A and B, the requirements of 4.15.3 shall be met when any applied and
available EPS lies within the range of 230 V AC +10 %, -15 % at a frequency as specified by the PS
manufacturer.
4.15.5 Output Voltage Stability – Gradual Load Variation
A gradual and continuous load variation on any one independent power output shall not reduce the
functionality of this or any other independent power output.
4.15.6 Output Voltage Stability – Switched Load Variation
A switched load variation on any independent power output shall not reduce the functionality of any
independent power output.
Any transients that are generated during the load variation shall meet the requirements of 4.15.7.

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4.15.7 Transients on the power outputs
Transients on any independent Power Output during operation of the PS shall be limited to:
a) no more than 125 % of the maximum power output voltage and no less than 95 % of the minimum
power output voltage for a period not exceeding 200 ms, and
b) no more than 140 % of the maximum power output voltage and no less than 75 % of the minimum
power output voltage for a period not exceeding 1 ms.
5 Marking
The power supply shall be marked in accordance with 4.15.1, EN 50131-1, and either EN 60950
series or EN 60065 .
6 Documentation
The power supply shall be accompanied by documentation in accordance with EN 50131-1.
Additionally, the documentation shall contain the following information:
a) installation, commissioning, maintenance and operating instructions;
b) brief description of operation including characteristics of monitoring functions provided;
c) type of PS (A, B or C);
d) for types A and B, voltage rating and frequency requirements of the EPS;
e) rated output of the power supply and maximum rated output of each independent power output;
f) the power requirement for any integrated component e.g. CIE, or the PS control circuitry;
g) output voltage range under normal operating conditions;
h) for PS with dc outputs, the maximum output peak to peak ripple voltage;
i) type of SD, its maximum capacity and maximum time to recharge to 80 %;
j) the SD voltage below which the APS Fault: Low Voltage SD signal or message will be generated;
k) the voltage at any independent power output below which the Power Output Fault signal or
message will be generated;
l) the SD voltage below which the Deep Discharge Protection function will operate;
m) over-voltage protection trigger voltage;
n) connection details, including sufficient detail to enable effective interface and operation as part of
the I&HAS;
o) electrical and logical characteristics of monitoring signals and messages e.g. volt-free contact,
message protocols supported;
p) operating temperature and humidity range;
q) weights and dimensions;
r) fixing details;
s) details of type and value for any user serviceable components e.g. fuses;
t) details (e.g. frequency and procedure) of any required calibration checks and adjustments.

7 Tests
Where products are to be tested for compliance with this standard, the following tests shall be applied
to PS types A, B and C according to Table 7 below for the appropriate grade as defined in Table 1.
These tests are intended to be primarily concerned with verifying the correct operation of the power
supply to the requirements of this standard and the specification provided by the manufacturer. All the
test parameters specified shall carry a general tolerance of ± 10 % unless otherwise stated.
Table 7 — Tests for PS according to type
Type Type Type
Test Title Test no.
A B C
1 Reduced Functional Test 7.2 ! ! !
2 PS Rating 7.3 ! ! !
3 Output Voltage Stability – Gradual Load Variation 7.4 ! ! !
4 Output Voltage Stability – Switched Load Variation 7.5 ! ! !
5 Signalling: Loss of EPS 7.6 ! !
6 Signalling: Storage Device – Low Voltage 7.7 ! ! !
7 Signalling: Storage Device – Failure 7.8 !
8 Signalling: Low Output Voltage 7.9 ! !
9 Signalling: Power Unit Failure 7.10 ! !
10 Signalling: Power Unit Failure – SD Charging 7.11 !
11 Remote Test 7.12 !
12 SD Recharging 7.13 !
13 Over-voltage Protection 7.14 ! !
14 Short Circuit Protection 7.15 ! ! !
15 Overload Protection 7.16 ! ! !
16 Deep Discharge Protection 7.17 ! ! !
17 Automatic Changeover to APS 7.18 ! !
18 Tamper Protection 7.19 ! ! !
19 Tamper Detection – Access to the inside of the 7.20 ! ! !
housing
! ! !
20 Tamper Detection – Removal from mounting 7.21
21 Tamper Detection – Penetration of the housing 7.22 ! ! !
22 Environmental and EMC 7.23 ! ! !
23 Marking and Documentation 7.24 ! ! !
! = Test applicable for PS type.

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7.1 General test conditions
7.1.1 Standard laboratory conditions for testing
The general atmo
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