R-1 — لوائح التركيبات الكهربائية
10 أنظمة الطوارئ والاحتياط ومصادر الطاقة غير المنقطعة
الصفحة 41 في الوثيقة الأصلية
عرض PDFSECTION 10
EMERGENCY, STAND-BY & UNINTERRUPTIBLE POWER SUPPLY SYSTEMS
1000 EMERGENCY SYSTEMS
1000--1 Emergency systems shall generally be provided in places of assembly where artificial illumination is
required like buildings subject to occupancy by large number of people, hotels, theatres, multi -storey
buildings, sports arenas, hospitals and similar premises and in all such premises adequate illumination shall be
provided from the emergency system to safely evacuate personnel. All stairways, landings, exits and similar
locations shall be provided with emergency lighting. This system shall also be capable of providing power to
essential services and equipment in hospitals, refrigeration plants, in bulk cold stores, air conditioning systems
in operating theatres, lifts, fire alarm systems, fire pumps, industrial processes equipment where an interruption
of the normal supply would produce serious hazards, and for all other similar function.
1000--2 The emergency system shall have adequate capacity and rating for the emergency operation of all
equipment connected to the system.
1000--3 The emergency system shall be so designed and constructed that in the event of failure of the
normal supply to or within the building, emergency lighting and emergency power where such is required, will
be immediately available.
1000--4 The type of emergency system adopted shall depend upon the nature of the occupancy and the load
and one of the following systems may be provided:
(a) Storage Battery:
A storage battery of suitable rating and capacity along with inverters etc. to supply and maintain at
not less than 90 percent of the system voltage the total load of the circuits supplying emergency
lighting and emergency power for a minimum period of l.5 hours. The system shall be complete with
automatic battery charging means.
(b) Generator Set:
A generator set driven by a prime mover of suitable rating and capacity to supply and maintain at
system voltage the total load of the circuits supplying emergency lighting and emergency power.
Means shall be provided for automatically starting the prime mover on failure of the normal supply.
Automatic means shall also be provided for transferring from the normal supply to the emergency
supply those loads necessary during emergency. For hospitals, the transition time from the instant of
failure of the normal supply to the emergency supply shall not exceed 10 seconds.
NOTE - MEW's approval shall be obtained for the type of automatic transfer from normal to
emergency supply.
(c) Built-in Equipment:
Individual unit equipment for emergency illumination shall comprise of a rechargeable battery, a
battery charging means, lighting fixture and are laying device arranged to energize the lamps
automatically upon failure of normal supply. The batteries shall be of suitable rating and capacity to
supply and maintain at not less than 90 percent of the normal battery voltage, the total lamp load for
a period of at least 1.5 hours.
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1000--5 Prime movers associated with generator sets shall be provided with a non-site fuel supply sufficient
to operate the prime mover for at least 3 hours.
1000--6 All circuit wiring for emergency systems shall be kept entirely independent of all other wiring and
equipment and shall not enter the same trunking or tray as normal wiring except in transfer switches, exit or
emergency light fixtures, or where the wiring is common for both systems.
1005 STAND-BY SYSTEMS
1005--1 In addition to the emergency systems due consideration shall also be given in the selection and
rating of such systems to afford standby power also to non-emergency system during a failure of normal
supply.
1005--2 For stand-by systems a manual or automatic change over from normal supply to standby supply
shall be provided.
NOTES - 1. Under no circumstances shall there be any possibility to back feed from the generator set
to the main network.
2. MEWs approval shall be obtained for the type of change over system adopted from
normal supply to emergency or stand-by supply.
1010 UNINTERRUPTIBLE POWER SUPPLY SYSTEMS
1010--1 The applications for the uninterruptible power supply systems should include but are not limited to
computer systems, process control, communications, testing, medical installations.
1010--2 The UPS systems should meet the load requirements and the UPS installation should be carried out
in accordance with this regulation and relevant standards, and job specification and/or manufacturer‟s
instructions.
1010--3 If the mains supply is supported by the power generator sets, the UPS system shall be so designed to
interface and operate with the power generators to maintain an uninterruptible power supply in case of mains
failure.
1010--4 A static change over switch shall be provided for UPS to supply power to the load. In the event of
UPS fault, the static change over switch shall automatically transfer the load from UPS output to the other
source without causing any interruption.
1010--5 The UPS system shall be equipped with facilities to prevent backfeed to the input terminals causing
hazards to the operating and maintenance personnel.
1010--5 The cables for UPS system shall be flame retardant type with facilities to prevent backfeed to the
input terminals causing hazards to the operating and maintenance personnel.
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EMERGENCY, STAND-BY & UNINTERRUPTIBLE POWER SUPPLY SYSTEMS
1000 EMERGENCY SYSTEMS
1000--1 Emergency systems shall generally be provided in places of assembly where artificial illumination is
required like buildings subject to occupancy by large number of people, hotels, theatres, multi -storey
buildings, sports arenas, hospitals and similar premises and in all such premises adequate illumination shall be
provided from the emergency system to safely evacuate personnel. All stairways, landings, exits and similar
locations shall be provided with emergency lighting. This system shall also be capable of providing power to
essential services and equipment in hospitals, refrigeration plants, in bulk cold stores, air conditioning systems
in operating theatres, lifts, fire alarm systems, fire pumps, industrial processes equipment where an interruption
of the normal supply would produce serious hazards, and for all other similar function.
1000--2 The emergency system shall have adequate capacity and rating for the emergency operation of all
equipment connected to the system.
1000--3 The emergency system shall be so designed and constructed that in the event of failure of the
normal supply to or within the building, emergency lighting and emergency power where such is required, will
be immediately available.
1000--4 The type of emergency system adopted shall depend upon the nature of the occupancy and the load
and one of the following systems may be provided:
(a) Storage Battery:
A storage battery of suitable rating and capacity along with inverters etc. to supply and maintain at
not less than 90 percent of the system voltage the total load of the circuits supplying emergency
lighting and emergency power for a minimum period of l.5 hours. The system shall be complete with
automatic battery charging means.
(b) Generator Set:
A generator set driven by a prime mover of suitable rating and capacity to supply and maintain at
system voltage the total load of the circuits supplying emergency lighting and emergency power.
Means shall be provided for automatically starting the prime mover on failure of the normal supply.
Automatic means shall also be provided for transferring from the normal supply to the emergency
supply those loads necessary during emergency. For hospitals, the transition time from the instant of
failure of the normal supply to the emergency supply shall not exceed 10 seconds.
NOTE - MEW's approval shall be obtained for the type of automatic transfer from normal to
emergency supply.
(c) Built-in Equipment:
Individual unit equipment for emergency illumination shall comprise of a rechargeable battery, a
battery charging means, lighting fixture and are laying device arranged to energize the lamps
automatically upon failure of normal supply. The batteries shall be of suitable rating and capacity to
supply and maintain at not less than 90 percent of the normal battery voltage, the total lamp load for
a period of at least 1.5 hours.
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1000--5 Prime movers associated with generator sets shall be provided with a non-site fuel supply sufficient
to operate the prime mover for at least 3 hours.
1000--6 All circuit wiring for emergency systems shall be kept entirely independent of all other wiring and
equipment and shall not enter the same trunking or tray as normal wiring except in transfer switches, exit or
emergency light fixtures, or where the wiring is common for both systems.
1005 STAND-BY SYSTEMS
1005--1 In addition to the emergency systems due consideration shall also be given in the selection and
rating of such systems to afford standby power also to non-emergency system during a failure of normal
supply.
1005--2 For stand-by systems a manual or automatic change over from normal supply to standby supply
shall be provided.
NOTES - 1. Under no circumstances shall there be any possibility to back feed from the generator set
to the main network.
2. MEWs approval shall be obtained for the type of change over system adopted from
normal supply to emergency or stand-by supply.
1010 UNINTERRUPTIBLE POWER SUPPLY SYSTEMS
1010--1 The applications for the uninterruptible power supply systems should include but are not limited to
computer systems, process control, communications, testing, medical installations.
1010--2 The UPS systems should meet the load requirements and the UPS installation should be carried out
in accordance with this regulation and relevant standards, and job specification and/or manufacturer‟s
instructions.
1010--3 If the mains supply is supported by the power generator sets, the UPS system shall be so designed to
interface and operate with the power generators to maintain an uninterruptible power supply in case of mains
failure.
1010--4 A static change over switch shall be provided for UPS to supply power to the load. In the event of
UPS fault, the static change over switch shall automatically transfer the load from UPS output to the other
source without causing any interruption.
1010--5 The UPS system shall be equipped with facilities to prevent backfeed to the input terminals causing
hazards to the operating and maintenance personnel.
1010--5 The cables for UPS system shall be flame retardant type with facilities to prevent backfeed to the
input terminals causing hazards to the operating and maintenance personnel.
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