This article is developed to provide guidance on the tests conducted on the motor throughout its construction, as well as the final tests conducted during the FAT. The ultimate objective is to be aware of the tests that are to be conducted during the FAT, and to clarify the criteria for motor final acceptance.
The following tests have been conducted throughout the construction process of the motor. Most of these tests have either been witnessed or their documents reviewed earlier and approved, as agreed in the ITP and Inspection Requirements. A review of these documents, at the time of the FAT, is an added quality check.
Motor Solo Run Test Procedure Pdf 14
The main goal of conducting the routine test is to insure that the motor is free from electrical and mechanical defects. Therefore, each machine shall undergo the routine test, which consists of the following procedures, per API STD 541, while additional guidelines for these tests can be obtained from NEMA MG 1 and IEEE 112, or IEC 60034-2:
Unless otherwise specified, a complete test is required on a single motor of a series of identical design to insure the correct design and performance of this specific design. This applicable for all motors rated 6.6 kV and above and allmotors rated above 3700 kW (5000 HP). This test consists of the following procedures, per API STD 541, while additional guidelines for these tests can be obtained from NEMA MG 1 and IEEE 112, or IEC 60034-2:
Unless otherwise specified, a heat run test (also known as the temperature rise test) is required on a single motor of a series of identical design to insure the correct design and performance of this specific design.
Electric motors have had a reputation for being a mix of science and magic. So when a motor fails to operate it may not be obvious what the problem is. Knowing some basic methods and techniques along with having a few test instruments handy helps detect and diagnose problems with ease.
A number of diagnostic tools, such as clamp-on ammeters, temperature sensors, a Megger or oscilloscope, can help illuminate the problem. Preliminary tests generally are done using the ubiquitous multimeter. This tester is capable of providing diagnostic information for all kinds of motors.
Insulation testingThe insulation resistance tester (or megohmmeter), generally known by its trade name Megger, can provide critical information regarding the condition of motor insulation. In an industrial facility, the recommended procedure is to perform periodic tests and record the results so damaging trends can be detected and corrected to prevent an outage and extensive downtime.
The insulation resistance tester resembles a conventional ohmmeter. But rather than the typical three-volt test voltage derived from an internal battery and present at the probes, the Megger provides a much higher voltage applied for a proscribed length of time. The leakage current through insulation, expressed as resistance, is displayed so it can be graphed. This test may take place on installed or on-the-reel cable, tools, appliances, transformers, power distribution subsystems, capacitors, motors and any type of electrical equipment or wiring.
The test may be non-destructive, for in-service equipment, or prolonged at elevated voltage to test prototypes to the point of destruction. A bit of a learning curve is involved in using the Megger. The correct settings, connection procedures, test durations and safety precautions must be implemented to avoid damaging the equipment or electrocuting the operator or coworkers.
Refusal to submit to a field breath test or other approved testing shall result in the same punishment as provided for operators of motor vehicles on the state highways (automatic suspension of vessel license). 2ff7e9595c
Comments