Children's hospital. Electrics

Power supply

Electric power metering is provided for the consumer, installed in the initial B1 and B2 BRU.

The main power receivers of the central children's hospital are electric lighting, power electric elevators, technological equipment, sanitary and refrigeration equipment, medical equipment (portable, stationary, thermal, laboratory).

The main power receivers are category II consumers. Consumers of category 1 include:

- all electrical receivers of resuscitation rooms;

- emergency lighting;

- power electric drives of elevators.

Power supply of consumers of category 1 is made from the independent panel with ALT device, which is connected to the input ADU after the control unit and to the protection unit

TNCS grounding system is provided for electrical receivers.

Power electrical equipment.

For input, metering and distribution of electric power at the elevation of -2.900 in the electrical switchboard room, installation of input and distribution devices of the VR1D type of the NVA low-voltage equipment plant in Divnogorsk is provided. Technical metering of electric power is provided at the BRU.

Distribution boards of the Divnogorsk plant "NVA" are provided for power distribution.

Automatic circuit breakers of AP50B series are adopted as starting equipment.

To connect portable electric receivers to the electrical network, plug sockets (connectors) with grounding contacts are provided.

In high-risk rooms, sockets for connection of process equipment are accepted with grounding contact, protected version

Control and control equipment for medical equipment, for plenum ventilation - control and control devices - are still complete with technological and plumbing equipment.

Plumbing electrical equipment.

For power supply of all ventilation systems distribution cabinet 1ShV1 is provided in switchboard.

Control cabinets supplied with ventilation systems are provided for start-up and control of plenum ventilation systems.

Control of exhaust system fans is provided in 2 speed stachregulators, which are located in niches on all 3 ets near the stairwell and button posts PKEB on the attic room at elev. + 9.500 .

For all supply and exhaust systems, remote monitoring and control of systems is provided using an external panel (supplied complete with equipment), on which an alarm is provided for the operation of the equipment "On"; "Accident." Speed controllers for exhaust systems and external control panels for supply and supply systems are provided to be located in the serviced room or in a niche in the corridor near the stairwell. The project provided shutdown at the fire of cases of ventilation 1ShV1 and 1Sh2 by the automatic machines with an independent rastsepitel working on shutdown when giving a signal from the device of the fire alarm.

Process electrical equipment.

For refrigeration, process and plumbing equipment, CH and SR cabinets are provided, which are powered by independent lines from the BRU. RB working lighting panels, RB emergency lighting panels - consumers of category I - from RB from electrical panel .

In high-risk rooms, sockets for connecting process equipment are adopted with a grounding contact, protected version and are powered through a protective disconnection device. Electrical networks to power electric receivers remote from the walls are laid hidden in the floor in steel pipes.

Starting equipment for cargo elevators - delivered complete with process equipment

Elevators are powered by independent lines directly from the BRU, taking into account the requirements of item 7.19 of SP311102003. Electrical wiring to elevator drives is laid in a shaft in a steel pipe in a rod.

Distribution networks shall be made with VBGngLS cable laid open on walls in technical rooms, in ventilation chambers, in electrical panel; in pipes in the floor, hidden in the strobes of the walls under the plaster. Cable passes through walls and floors shall be made in steel pipe sections. Fill the place of advance with non-combustible easily penetrable material, seal the cable in the pipe.

Electrical equipment of special rooms.

1. Intensive care room.

All electrical receivers of resuscitation rooms belong to consumers of category I and are supplied from two sources through ATS

SR switchboard is installed for each intensive care room. Equipment of reanimation rooms is supplied from SR supply boards connected to three-phase groups of 1RCB distribution board through separation transformer.

Power supply of lamps of the general lighting of resuscitation halls is carried out from a guard 1ShchOR1.

The lamps are received with a continuous closed lens made of opal glass.

2. Physiotherapy rooms.

Physiotherapeutic rooms are provided with FF switchboards with control apparatus at voltage input and control at each phase. In each physiotherapeutic cockpit at a height of 1.6m, a board of A588B type with a switch, a ceramic socket and 4 terminals is installed. The electrical networks to each panel are made independent hidden in the floor in steel pipes.

Re-grounding of the zero wire on the lead-in panel is performed by an additional fifth core cable with a section equal to the phase conductor.

3. Sterilizing

Electrical sterilizers are connected to the mains through the autonomous automatic circuit breaker AP50B2MT, which is installed on the wall at a height of 1.6m not further than 1m from the device location. For grounding in the terilisation room, a steel bus with a strip section of 4x40mm with a resistance of not more than 10 ohms is provided.

4. X-ray diagnostics rooms.

The electric receivers of the X-ray diagnostic department are: X-ray installations, photo laboratory electric receivers, electromedical equipment, electric lighting and powered by an independent line from the BRU. X-ray equipment is connected to the network through a box with a chopper. The distance from the box to the control panel of the X-ray apparatus is not more than 1.5 m. The section of the X-ray feeder lines is selected on the basis of a special calculation for the photographing mode, based on the permissible resistance of two wires of the supply network.

In procedural a X-ray diagnostic office two lighting systems are provided: the general which is powered from a guard 1ShchO1, and adaptation - from a power line, as the x-ray device.

Rosettes are installed at the doctor's desk:

- without the grounding contact and with the grounding contact, eating from a guard 1ShchO1;

- without grounding contact supplied from the low voltage panel of the X-ray apparatus.

In the premises of the compartment, control devices are located at a height of 1,6 m, socket sockets - at a height of 1,2 m.

Electric lighting.

The project provides general lighting and lighting. Common working lighting is provided in all rooms.

Safety lighting is provided in vestibules, procedural, cooking shops.

In wards and in doctors' offices, couches at a height of 1.7m from the floor are provided with wall lamps for examining the patient. In the offices of doctors and laboratories there are sockets at a height of 0.9 m from the floor for switching on desktop lamps.

Lamps at the entrances to the building are connected to the emergency lighting network.

Emergency lighting fixtures are connected to a separate emergency lighting line and are distinguished from the number of working lighting fixtures by special signs (letter A).

Installation and connection to the network of light indicators "Exit" is provided in the section of the project "Fire alarm."

Illumination of rooms is accepted according to SNiP 23. 0595 *, SanPiN 2.4.1.124903 .

Types and design of lamps correspond to purpose and environment of rooms. General lighting fixtures of medical premises and in corridors have continuous closed lenses made of milk, opal or matte glass. In rooms with increased danger (wet, raw), lamps are accepted with a degree of protection of at least 1P44. In fire hazardous rooms, lamps are accepted with a degree of protection of at least 1P54; lighting fixtures with filament lamps have continuous silicate glass protecting the lamp; luminaires with fluorescent lamps with reflectors and diffusers made of non-combustible materials.

In rooms where the requirements for correct color reproduction are increased and the work of the medical staff is associated with the assessment of subtle color changes in the skin and mucous membranes of the patient (offices of the surgeon, pediatricians, infectionist, dermatovenerologist, etc.), lamps are provided with an improved color transmission index .

Lighting in the rooms is controlled by switches installed in the room at the entrance, in the box - from the corridor side at the entrance to the box; wall lamps at couch-switch at this lamp. Lighting switches in rooms with increased danger are brought to the nearest rooms with normal environment.

The rooms are provided with socket sockets with protective shutters. Sockets and switches in the premises where children are supposed to stay are installed at a height of 1.8 m from the floor, in other rooms - at a height of up to 1.5 m from the floor .

The group network is made by Sx core cable of VBGngSLC is hidden in the bars of the walls under the plaster and behind the suspended one.

Automation of engineering equipment and plumbing devices.

The following equipment shall be automated in the project:

- Plenum ventilation

Automation panels for plenum ventilation are ordered in Sections II and are delivered complete with process and plumbing equipment.

Protective safety measures.

The design provides for protective safety measures in accordance with chap. 17, 7-1, 7-4 of PUE 6, ed.

The main protection against direct contact with current-carrying parts of electrical equipment is provided by:

- main insulation of current-carrying parts;

- use of protective shells for power and lighting equipment.

Protection against indirect touching in case of insulation damage is provided by:

- automatic disconnection by circuit breakers with combined disconnectors, which protect the networks from K.Z. currents and overload currents;

- grunting;

- using a repeated grounding circuit connected to the PE bus of the BRU;

- double insulation (WBGngLS cable);

- in the group lines supplying the socket mains, the RCD installation with the nominal actuation current of 30mA is provided.

Perform the main potential equalization system at the input to the building.

The main grounding bus is the "B1" busbar PE. Connect the following to GWB:

metal pipes entering the building, metal air ducts, metal cable structures, special protective conductors of the group network, PEN conductor of supply cables, grounding wire. Connect the grounding conductor to the existing external grounding circuit. All connections to the GWN must be split - bolted, connections to the grounding circuit - welded.

The project provides an additional potential equalization system.

All visible parts of the potential equalization system shall be marked - cross yellow-green stripes.

To ensure normal operation of highly sensitive medical equipment, the design provides a working earthing system with an independent grounding device (R not more than 2 ohms)

Lightning protection of the building (II degree of fire resistance) is not required in accordance with the "Instruction on lightning protection of buildings and structures ."

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