GB 50303-2015 English PDF

GB 50303-2015: Code for acceptance of construction quality of building electrical engineering
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GB 50303-2015
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
UDC
P GB 50303-2015
Code for Acceptance of Construction Quality of Building
Electrical Engineering
ISSUED ON: DECEMBER 3, 2015
IMPLEMENTED ON: AUGUST 1, 2016
Issued by: Ministry of Housing and Urban-Rural Construction of the People’s
Republic of China;
General Administration of Quality Supervision, Inspection and
Quarantine of the People’s Republic of China.
Table of Contents
Foreword ... 4
1 General Provisions ... 10
2 Terms and Symbols ... 11
2.1 Terms ... 11
2.2 Symbols ... 13
3 Basic Requirements ... 14
3.1 General Requirements ... 14
3.1.5 Electrical equipment, wiring system and relay protection system with high-voltage must
pass the hand-over test... 14
3.1.7 Exposed-conductive-part of electrical equipment shall separately connect to protective
conductor, and it must not be in series connection; material and sectional area of connecting
conductor shall meet the design requirements... 14
3.2 Site Acceptance of Main Equipment, Materials, Finished Product and Semi-finished Products
... 14
3.3 Confirmation of Process Handover ... 20
3.4 Division and Acceptance of Divisional Project (Subdivisional Project) ... 25
4 Installation of Transformer and Box-type Distribution Station ... 28
4.1 Dominant Item ... 28
4.2 General Item ... 29
5 Installation of Complete Set Distribution Cabinet, Control Cabinet (Console, Box),
Distribution Box (Switch Board) ... 31
5.1 Dominant Item ... 31
5.2 General Item ... 33
6 Check the Wiring of Electromotor, Electrical Heater and Electric Actuating Machine
37
6.1 Dominant Item ... 37
6.2 General Item ... 37
7 Installation of Diesel Power Generating Set ... 39
7.1 Dominant Item ... 39
7.2 General Item ... 39
8 Installation of UPS and EPS ... 41
8.1 Dominant Item ... 41
8.2 General Item ... 42
9 Testing and Power Test Run of Electrical Equipment ... 43
9.1 Dominant Item ... 43
9.2 General Item ... 43
10 Installation of Busway ... 44
10.1 Dominant Item ... 44
10.2 General Item ... 45
11 Installation of Ladder, Tray and Trunking ... 48
11.1 Dominant Item ... 48
11.2 General Item ... 49
12 Conduit Laying ... 51
12.1 Dominant Item ... 51
12.1.2 The steel conduit shall not be connected by butt fusion welding; the galvanized steel
conduit or steel conduit with wall thickness less than or equal to 2 mm shall not be
adopted with bushing fusion welding connection... 51
12.2 General Item ... 52
13 Cable Laying ... 56
13.1 Dominant Item ... 56
13.1.5 Single-core AC cable or each phase cable after phase splitting shall not be
introduced into the steel conduit singly; fixtures and bearers used for fixing shall not
form closed magnetic circuit... 56
13.2 General Item ... 57
14 Conduit Wiring and Trunking Wiring ... 60
14.1 Dominant Item ... 60
14.2 General Item ... 60
15 Straight Laying of Plastic Sheathed Wire ... 62
15.1 Dominant Item ... 62
15.2 General Item ... 62
16 Steel Rope Wiring ... 64
16.1 Dominant Item ... 64
16.2 General Item ... 64
17 Cable Head Production, Wire Connection and Line Insulation Test ... 66
17.1 Dominant Item ... 66
17.2 General Item ... 67
18 Installation of Ordinary Luminaire ... 69
18.1 Dominant Item ... 69
18.1.5 As for the exposed conductive part of Class I luminaire of ordinary luminaire, copper-
cored flexible wire must be adopted to connect it with the protective conductor reliably;
the junction shall be arranged with earthing mark and the sectional area of copper-
cored flexible conductor shall be the same as that of the power line introduced into the
luminaire... 70
18.2 General Item ... 71
19 Installation of Special Luminaire ... 74
19.1 Dominant Item ... 74
19.1.6 The installation of landscape lighting luminaires shall meet the following
requirements: ... 75
19.2 General Item ... 76
20 Installation of Switch, Socket and Fan ... 79
20.1 Dominant Item ... 79
20.1.3 Socket wiring shall meet the following requirements: ... 79
20.2 General Item ... 80
21 Power Test Run of Building Lighting ... 83
21.1 Dominant Item ... 83
22 Installation of Earthing Device ... 84
22.1 Dominant Item ... 84
22.2 General Item ... 84
Code for Acceptance of Construction Quality of Building
Electrical Engineering
1 General Provisions
1.1.1 This code is formulated with a view to strengthening the quality management of
construction engineering, unifying the construction quality acceptance of building electrical
engineering and ensuring the engineering quality.
1.1.2 This code is applicable to the construction quality acceptance of building electrical
installation project with voltage class of 35kV or below.
1.1.3 Building electrical engineering construction quality acceptance shall meet those
specified in this code as well as the current relevant ones of the nation.
subjected to site acceptance, and acceptance record shall be kept and acceptance data shall be
filed. In case there are technical parameter requirements for design, the technical parameter
shall be checked and meet the design requirements.
3.2.2 Products with production license or compulsory certification (CCC certification) shall be
provided with license No. or CCC certification mark, and certification scope, effectiveness and
authenticity of production license or CCC certificate shall be randomly inspected.
3.2.3 Technical documents for installation, application, maintenance and test requirements
shall be provided in case of site acceptance of new type electrical equipment, instrument and
materials.
3.2.4 As for site acceptance of imported electrical equipment, instrument or materials,
quality certificate, performance test report as well as technical documents for installation,
application, maintenance and test requirements shall be provided; as for imported electrical
equipment with commodity inspection requirements, commodity inspection certificate shall also
be provided.
3.2.5 In case on-site sampling inspection is carried out for site acceptance of main
equipment, materials, finished product and semi-finished products or sampling inspection is
carried out in qualified laboratory due to disagreement, the following requirements shall be
met:
1 On-site sampling inspection: as for busway, conduit, insulated wire and cable of the
same manufacturer, lot, model and specification, at least 1 sample shall be taken out from
each lot; as for such electrical equipment as luminaire, socket and switch of the same
manufacturer, material and type, 3% of each shall be sampled for inspection; as for luminaire
with storage battery, 5% of them shall be sampled for inspection, and the inspection quantity
shall not be less than 1 piece (set).
2 Sampling inspection carried out in qualified laboratory due to disagreement: as for
busway, insulated wire, cable, ladder, tray, trunking, conduit, profile steel and galvanized
product of the same manufacturer and lot but different specification, 10 % shall be subjected to
sampling inspection and the quantity of specification of the inspected product shall not be less
than 2; as for such electrical equipment as luminaire, socket and switch of the same
manufacturer, material and type, in case the quantity is 500 pieces (sets) or below, 2 pieces
(sets) shall be subjected to sampling inspection, and the quantity for sampling inspection for
each shall at least be 2 pieces (sets), in case the quantity is more than 500, 3 pieces (sets) shall be
subjected to sampling inspection.
3 As for multiple unit works included in the same construction project constructed by
the same construction organization, in case main equipment, materials, finished product and
semi-finished products of the same manufacturer, material, lot and type are used, the sampling
ratio shall be calculated in a combined way.
4 In case of unqualified sampling inspection results, the sampling quantity for
inspection may be doubled, in case there is still unqualified result, this lot of equipment,
materials, finished products or semi-finished products shall be judged as unqualified products and
shall not be used.
5 There shall be test report.
3.2.6 As for site acceptance of transformer, box-type substation, high-voltage electric
equipment and electrical porcelain products, the following contents shall be covered:
1 Inspect quality certificate and accompanying technical documents: transformer shall
be provided with end-of-manufacturing test records;
2 Appearance inspection: the equipment shall possess nameplate, the surface coating
shall be integral, the accessories shall be complete, the insulating piece shall be free from
defect or crack, the part for oil charging shall be free from leakage, and the air pressure
indication of charging high-pressure equipment shall be normal.
3.2.7 Site acceptance of high-voltage complete-set distribution cabinet, storage battery
cabinet, UPS cabinet, EPS cabinet, complete set low-voltage distribution cabinet (box) and
control cabinet (console, box) shall meet the following requirements:
1 Inspect quality certificate and accompanying technical documents: such complete set of
cabinets as complete set high-voltage and low-voltage distribution cabinets, storage battery
cabinet, UPS cabinet and EPS cabinet shall possess end-of-manufacturing test report;
2 Check product model and product technical parameter: they shall meet the design
requirements;
3 Appearance inspection: the equipment shall possess nameplate, the surface coating
shall be integral without visible collision dents, the elements and components in the equipment
shall be intact and the wiring shall be free from shedding or sealing-off, the material and
specification of insulated wire shall meet the design requirements, the battery case in storage
battery cabinet shall be free from fragmentation or leakage, and the oil-filled equipment and the
charging equipment shall be free from leakage.
3.2.8 Site acceptance of diesel power generating set shall include the following contents:
1 Check host, accessories special tools, spare parts and accompanying technical
documents: quality certificate and end-of-manufacturing test run records shall be complete and
integral, and generator and its control cabinet shall possess end-of-manufacturing test records.
2 Appearance inspection: the equipment shall possess nameplate; the coating shall be
intact and the body shall be free from missing part.
3.2.9 As for site acceptance of electromotor, electrical heater, electric actuating machine and
low-voltage switchgear, the following contents shall be covered:
1 Inspect quality certificate and accompanying technical documents: the filled contents
shall be complete and intact;
2 Appearance inspection: the equipment shall possess nameplate; the coating shall be
intact and the equipment components or accessories shall be complete and intact without
defect.
3.2.10 Site acceptance of lighting fixture and accessories shall meet the following
requirements:
1 Inspect quality certificate: the quality certificate contents shall be complete and intact,
the luminaire material shall meet the design requirements and product standard requirements; gas
discharge lamp of new type shall be accompanied by technical documents accompanying
technical documents; the test data for such functions of internal short loop protection, overload
protection, back discharge protection and polarity reverse connection protection of
solar luminaire shall be complete and meet the design requirements.
2 Appearance inspection:
1) Luminaire coating shall be intact without damage, the accessories shall be
complete, exposed-conductive-part of Category I luminaire shall be provided with special PE
terminal;
2) Live part and part providing electrical shock protection of fixed luminaire shall be
well, and the identification shall be complete. The insulated wire or cable insulation layer
sampled for inspection shall be intact with uniform thickness; the cable shall be free from
flattening or distortion; the armour shall be free from loose coil; insulated wire and cable
outer sheath shall possess visible identification and manufacturer mark.
3 Inspect insulation performance: insulation performance of wire and cable shall meet
those specified in product technical standards or product technical documents.
4 Inspect nominal sectional area and resistance value: nominal sectional area of
insulated wire and cable shall meet the design requirements, and their conductor resistance
values shall meet the requirements of the current national standard Conductors of Insulated
Cables (GB/T 3956).In case of disagreement about conductivity, insulation performance,
insulation thickness, mechanical performance as well as flame-retardant and fire performance of
insulated wire and cable, the corresponding products shall be sampled by lot and sent to
qualified laboratory for inspection. Inspection item and content shall meet those specified in
relevant current product standards of the nation.
3.2.13 Site acceptance of conduit shall meet the following requirements:
1 Inspect quality certificate: steel conduit shall possess product quality certificate, and
plastic conduit shall possess quality certificate and corresponding test report.
2 Appearance inspection: steel conduit shall be free from flattening with smooth inner
wall; non-galvanized steel conduit shall be free from corrosion with intact coating; galvanized
steel conduit plating shall be intact, and its surface shall be free from rust stain; plastic
conduit and accessories shall be free from fragmentation and the surface shall be provided
with flame-retardant mark and manufacturer mark.
3 Diameter, wall thickness and uniformity of conduit shall be sampled by lot and
inspected and shall meet those specified in relevant current product standards of the nation.
4 In case of disagreement about electrical continuity of steel conduit of mechanical
connection and its accessories, inspection shall be conducted ...