Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
Annex A of this standard is normative.
This standard was proposed by China Machinery Industry Federation.
This standard is under the jurisdiction of National Technical Committee on Agricultural Machinery of Standardization Administration of China (SAC/TC 201).
Waste submersible motor-pumps
1 Scope
This standard specifies the type, model, basic parameters, technical requirements, test methods, inspection rules as well as marking, packaging, storage and transportation of waste submersible motor-pumps.
This standard is applicable to single-phase or three-phase waste submersible motor-pumps (hereinafter referred to as "motor-pump") for pumping all kinds of sewage or mixed liquid containing insoluble solid substances such as silt, fiber, feces and river mud fertilizer.
2 Normative references
The following documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments (excluding corrections), or revisions, of any of these publications do not apply to this standard. However parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition applies.
GB/T 191 Packaging — Pictorial marking for handling of goods (GB/T 191-2008, ISO 780:1997, MOD)
GB 755 Rotating electrical machines — Rating and performance (GB 755-2008, IEC 60034-1:2004, IDT)
GB/T 1176 Specification for cast copper alloys (GB/T 1176-1987, neq ISO 1338:1977)
GB/T 1220 Stainless steel bars
GB/T 1348 Spheroidal graphite iron castings (GB/T 1348-2009, ISO 1083:2004, MOD)
GB 1971 Rotating electrical machines — Terminal markings and direction of rotation (GB/T 1971-2006, IEC 60034-8:2002, IDT)
GB/T 2828.1-2003 Sampling Procedures for Inspection by Attributea — Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection (ISO 2859-1:1999, IDT)
GB/T 4942.1-2006 Degrees of protection provided by the integral design of rotating electrical machines (IP code) — Classification (IEC 60034-5: 2000, IDT)
GB/T 5013.4 Rubber insulated cables of rated voltages up to and including 450/750V — Part 4:Cords and flexible cables (GB/T 5013.4-2008, IEC 60245-4:2004, IDT)
GB/T 9239.1 Mechanical vibration — Balance quality requirements for rotors in a constant (rigid) state — Part 1: Specification and verification of balance tolerances (GB/T 9239.1-2006, ISO 1940-1:2003, IDT)
GB/T 9439 Grey iron castings
GB 10395.8 Tractors and machinery for agriculture and forestry — Technical means for ensuring safety — Part 8: Irrigation pumps and machines
GB 10396 Tractors, machinery for agriculture and forestry, powered lawn and garden equipment — Safety signs and hazard pictorials — General principles (GB 10396-2006, ISO 11684:1995, MOD).
GB/T 12785-2002 Test methods for submersible motor-pumps
GB/T 13306 Plates
GB/T 17241.6 Integral cast iron flanges
JB/T 5673 Agricultural and forestry tractors and machinery — General requirements of painting
GB/T 6880.1~6880.3 Steel castings for pumps
JB/T 7593 Specification for Y series three-phase high voltage induction motor
JB/T 8735.2 Rubber insulated cords and flexible cables of rated voltages up to and including 450/750 V — Part 2: Tough rubber sheathed flexible cables for general purposes
JB/T 8735.3 Rubber insulated cords and flexible cables of rated voltages up to and including 450/750 V — Part 3: Rubber insulated braided cords
JB/T 50080 Submersible motor-pumps — Reliability evaluation methods
JB/Z 293 Test specifications for interturn insulation on stator winding for AC low-voltage machines
3 Type, model and basic parameters
3.1 Type
3.1.1 The motor-pump is single-stage or multi-stage vertical pump, and the pump is coaxial with the motor.
3.1.2 By the impeller structure, the motor-pump is classified into:
a) vortex impeller;
b) semi-open blade impeller;
c) closed blade impeller;
d) single or double channel impeller;
e) spiral centrifugal impeller;
f) mixed-flow impeller;
g) axial-flow impeller.
3.1.3 The type characteristic of motor-pump is expressed in capital Chinese phonetic alphabet:
X——vortex;
H——mixed-flow;
Z——axial-flow;
Impeller structures that is channel, spiral centrifugal, closed and semi-open are not marked.
3.1.4 The motor characteristic of motor-pump is expressed in capital Chinese phonetic alphabet:
S——water-filled;
Y——oil-filled;
D——single-phase;
G——high voltage (three-phase dry motor with 660 V and below is not marked).
3.1.5 For levels of enclosure protection of motor-pump is IPX8 specified in GB/T 4942.1-2006. The protection level of special requirements shall be determined by both parties through negotiation according to the provisions of GB/T 4942.1.
3.1.6 The motor-pump quota is a continuous quota based on the continuous working system (S1).
3.2 Model
3.2.1 Representation method of model
The model of motor-pump consists of capital Chinese phonetic alphabet and Arabic numerals. The specific representation methods are as follows:
3.2.2 Examples of marking
The mixed-flow waste submersible motor-pumps which specified flow is 4 860 m3/h, specified head is 5.4 m, rated power is 160 kW, accompany with three-phase motor with a voltage of 380 V, is marked as WQH4860-5.4-160.
The axial-flow waste submersible motor-pumps which specified flow is 29 000 m3/h, specified head is 2.8 m, rated power is 450 kW, accompany with three-phase motor with a voltage of 6 000 V, is marked as WQZG29000-2.8-450.
The closed waste submersible motor-pumps which specified flow is 5 m3/h, specified head is 7 m, rated power is 0.37 kW, accompany with single-phase motor with a voltage of 220 V, is marked as WQD5-7-0.37.
The closed waste submersible motor-pumps with cutting mechanism which specified flow is 50 m3/h, specified head is 15 m, rated power is 5.5 kW, accompany with three-phase motor with a voltage of 380 V, is marked as WQ50-15-5.5/QG.
The closed stainless steel waste submersible motor-pumps which specified flow is 50 m3/h, specified head is 15 m, rated power is 5.5 kW, accompany with three-phase motor with a voltage of 380 V, is marked as WQ50-15-5.5G.
3.2.3 Supplementary identification refers to the description or identification of the necessity of products made by the enterprise according to the contract or regulations, which be or not be marked as required.
3.3 Basic parameters
3.3.1 When the rated frequency of the power supply is 50 Hz, the voltages is single-phase (220 V) or three-phase (380 V, 660 V, 3 kV, 6 kV, 10 kV), and under specified service conditions, the basic parameters of motor-pump shall meet the requirements of Table1 and Table 2.
Foreword i
1 Scope
2 Normative references
3 Type, model and basic parameters
4 Technical requirements
5 Test methods
6 Inspection rules
7 Marking, packaging, storage and transportation
Annex A (Normative) Determination of motor-pump efficiency
