JB/T 51187-1999
Submersible motor-pumps for deep well - Product quality grading
井用潜水电泵 产品质量分等
Catalogue
前言 → 1 范围 → 2 引用标准 → 3 质量等级指标 Foreword → 1 Scope → 2 Normative References → 3 Quality grade indicators
Scope
This standard specifies the quality grade indicators, testing methods and inspection rules for submersible motor-pumps for deep well. This standard applies to submersible motor-pumps for deep well (hereinafter referred to as electric pumps).
本标准规定了井用潜水电泵产品的质量等级指标、检测试验方法和检验规则。本标准适用于井用潜水电泵（以下简称电泵）。
Normative References
Keywords
Application Summary AI generated
Manufacturers and quality inspection agencies of submersible motor-pumps for deep well use this standard to evaluate product quality grades. They classify products as qualified, first-class, or superior based on the grading indicators and test methods specified. This standard helps unify quality requirements and improve the overall level of the industry.
井用潜水电泵的制造商和质检机构使用本标准来评定产品的质量等级。他们依据本标准中的分等指标和试验方法，对产品进行合格品、一等品或优等品的分级。该标准有助于统一产品质量要求，提升行业整体水平。
AI Summary AI generated
This standard JB/T 51187-1999 specifies quality grade indicators, testing methods and inspection rules for submersible motor-pumps for deep well. Products are classified into three grades: qualified, first-class, and superior, based on technical and quality levels. It details performance requirements for pumps (efficiency, flow/head deviation) and electrical performance (efficiency, power factor) for submersible three-phase asynchronous motors, with specific values for different frame sizes and power ratings. The standard also adjusts items related to safety, insulation resistance, and assembly misalignment, while canceling some previous test items.
本标准JB/T 51187-1999规定了井用潜水电泵产品的质量等级指标、检测试验方法和检验规则。产品按技术水平和质量水平分为合格品、一等品和优等品三个等级。标准详细列出了井用潜水泵的性能要求（如效率、流量扬程偏差）和井用潜水三相异步电动机的电气性能（效率、功率因数），并给出了不同机座号和功率下的具体数值。标准还涉及安全要求、绝缘电阻、装配错位等项目的调整，并取消了部分试验项目。
Key Sentences extracted from text
本标准规定了井用潜水电泵产品的质量等级指标、检测试验方法和检验规则。
按电泵产品的技术水平和质量水平，分为合格品、一等品和优等品。
泵规定点效率的允许偏差：优等品、一等品下偏差规定为1%；合格品下偏差应符合GB/T 12785—1991 中11.4.6.3 中C 级的规定。
泵的流量与扬程偏差：合格品按GB/T 12785—1991 中11.4.6.2 中C 级的规定；一等品和优等品按GB/T 12785—1991 中11.4.6.2 中B 级的规定。
井用潜水三相异步电动机（以下简称电动机）产品的效率和功率因数应符合表2（充水式）、表3（充油式）、表4（屏蔽式）的规定。
This standard specifies the quality grade indicators, testing methods and inspection rules for submersible motor-pumps for deep well.
According to the technical level and quality level of the electric pump products, they are divided into qualified products, first-class products and superior products.
The allowable deviation of pump efficiency at specified point: the lower deviation for superior and first-class products is specified as 1%; the lower deviation for qualified products shall comply with the provisions of Grade C in 11.4.6.3 of GB/T 12785—1991.
The deviation of pump flow and head: qualified products shall comply with the provisions of Grade C in 11.4.6.2 of GB/T 12785—1991; first-class and superior products shall comply with the provisions of Grade B in 11.4.6.2 of GB/T 12785—1991.
The efficiency and power factor of submersible three-phase asynchronous motors for deep well (hereinafter referred to as motors) shall comply with the provisions of Table 2 (water-filled type), Table 3 (oil-filled type) and Table 4 (shielded type).
Standard Timeline
Changes from replaced version:
- 将原三项标准合并为一项
- 取消了“定子绕组匝间耐冲击电压试验”、“密封装置泄漏量”等项目
- 调整了“安全要求”、“电动机电气性能保证值的容差”、“定子绕组对机壳绝缘电阻”、“装配错位”等项目的内容
- 增加了“过热或过电流保护装置”、“电泵井下最大径向尺寸”、“电动机引出线端和旋转方向标志”等项目
- 重新划分了不合格项目分类，并相应地调整了抽样方案
- Merged the original three standards into one
- Cancelled items such as 'stator winding inter-turn surge voltage test' and 'seal device leakage'
- Adjusted the content of items such as 'safety requirements', 'tolerance of motor electrical performance guaranteed values', 'insulation resistance of stator winding to frame', and 'assembly misalignment'
- Added items such as 'overheat or overcurrent protection device', 'maximum radial dimension of pump in well', and 'motor lead wire terminal and rotation direction marking'
- Reclassified nonconforming item categories and adjusted the sampling plan accordingly