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Insulator tension bending testing machine

Insulator tension bending testing machine

Model: UT1069A Insulator mechanical strength test

UT1069A Insulator tension bending testing machine is designed to test the insulator tensile and bending test, The insulator tension bending load testing machine is mainly used for testing the bending strength, bending load strength, and flexural strength of various types of insulators. The computer system controls the servo motor's rotation through a digital controller and a speed control system. After reducing speed through a gear reduction system, it drives the moving beam to rise and fall via a precision ball screw pair, completing various mechanical performance tests such as tension, compression, bending, and shearing of the samples.


Mechanical strength test:  In this test, the insulator under test is applied by 250% of the maximum working load for one minute. This test is conducted to determine the ultimate mechanical strength of the insulator.
Electro-mechanical test: This test is conducted only for suspension type insulators. In this test, a tensile stress of 250% of maximum working tensile stress is applied to the insulator. After this, the insulator is tested for 75% of dry spark-over voltage.

General introduction

UT1069A Insulator tension bending testing machine is designed to test the insulator tensile and bending test, The insulator tension bending load testing machine is mainly used for testing the bending strength, bending load strength, and flexural strength of various types of insulators. The computer system controls the servo motor's rotation through a digital controller and a speed control system. After reducing speed through a gear reduction system, it drives the moving beam to rise and fall via a precision ball screw pair, completing various mechanical performance tests such as tension, compression, bending, and shearing of the samples.


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Insulator tension bending test

Mechanical strength test:  In this test, the insulator under test is applied by 250% of the maximum working load for one minute. This test is conducted to determine the ultimate mechanical strength of the insulator.
Electro-mechanical test: This test is conducted only for suspension type insulators. In this test, a tensile stress of 250% of maximum working tensile stress is applied to the insulator. After this, the insulator is tested for 75% of dry spark-over voltage.

Key Feature

  • Security function
  • Control system, Software
  • Deviation test procedure under load

Security function

Sensor of position limitation switch; 

Emergency stop switch; 

Hardware driving system overload protection, over voltage, current protection;

Software over load protection.



The complete post insulator is installed on a rigid support, and a bending load is applied to the free end of the test specimen. The offset at each load point is measured at 20%, 50%, and 70% of the mechanical failure load.

Main technical specification

Load capacity10KN / 20KN/ 50KN (0.4%--100%)
Multiple load cell in one machine functionYES
Load AccuracyClass 0.5 according ISO7500-1
Load cell overload capacity120~150% of rate capacity
Load measuring resolution1/500000 FS, stepless
Stiffness of frame0.024mm/t
Position / displacement resolution0.001mm
Crosshead travel1200mm
Tensile test space700mm
Compression test space800mm
Effective testing width (Clearance between columns)500mm
Standard tensile test fixtureManual wedge type
Wedge tensile fixture Flat specimen range0-20mm 
Wedge tensile fixture Flat specimen rangeΦ4-Φ20mm
Compression platen diameterΦ100mm
Testing speed range0.001 mm/min~500 mm/min, stepless, adjustable arbitrarily (Optional max. 1000mm/min)
Weight560kg
Standard Power220/110V, 50/60HZ, 1 phase
Dimensions860×600×1950mm
Analysis softwareFastTest English version
Working systemMS Win10/ Win11
Frame structure

Standard: Dual test space

Optional: Single test space


Specifications:

Load measurement accuracy: +/- 0.5% of applied load from 2% to 100% capacity; extended range down to 1% capacity with accuracy of 1% of applied load

Position measurement accuracy: +/- 0.5% of reading;

Deformation measuring accuracy and measuring range: 2%~100%FS, ≤±0.5%

Speed accuracy: ±1%(0.001~10mm/min),±0.5%(10~500mm/min) 

Operating temperature range: 0 to 38 degrees C (32 to 100 degrees F)

Storage temperature range:  -10 to 45 degrees C (14 to 115 degrees F)

Humidity range: 10% to 90% non-condensing, wet bulb method


Power: standard optional voltages110/220VAC, 50-60 Hz; power must be free of spikes and surges exceeding 10% of the nominal voltage. 

Notes: 1. Load weighing system meets or exceeds the requirements of the following standards: ASTM E4, EN 10002-2, BS 1610, DIN 51221, ISO 7500-1. UNITEDTEST recommends that systems are verified at installation in accordance with ASTM E4 and ISO 75001. 2. Strain measurement system meets or exceeds the requirements of the following standards: ASTM E83, EN 10002-4, BS 3846 and ISO 9513. 3. These models conform to all relevant European CE 

Notes: 2. Dual test space structure: Tensile test at upside of crosshead, Compression and bending test at downside of crosshead. 

Tensile, Compression and bending test all done at downside of crosshead (the three type test fixture interchange for different test). 




Main accessories (Standard delivery with machine)

High Stiffness Frame: 1 set
Servo driving system:
Servo motor:
1 set
Loadcell:1 set
Decelerator and deceleration system1 set
Leading screw:1 set
Insulator tensile test fixture1 set
Insulator bending test accessories1 set
Professional testing software(SmartTest, English version)1 set
Bending test fixture1 set
Computer1 set
Printer1 set
Documents (Manual, packing list, certificate)


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Beijing United Test Co., Ltd.