228078-2

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228078-2 is a type of electronic equipment that is a non-contact measurement device, and it is used to measure the resistance of an electrical conductor or the impedance of an electrical system. The 228078-2 is mostly used for testing purpose, such as to test insulation performance, dielectric strength, contact resistance, motor winding, furnace, etc. It is available in two sizes and two versions with either a high impedance or a low impedance measurement range.

The working principle of 228078-2 involves the coupling of the circuit to be tested to a bridge circuit that contains the 228078-2 device. The bridge circuit includes the three resistances in the upper arm and one of the lower arms. The other lower arm contains the 228078-2 device, which is connected to a DC voltage source. When a voltage is applied, the resistance of the 228078-2 device is measured and compared to the three resistances in the upper arm. If the resistance measured by the 228078-2 device is equal to the three resistances, then there is no difference from the source voltage and the bridge is balanced. If there is any imbalance in the bridge, then this will give an indication that the resistance measured by the 228078-2 is different from the three resistances in the upper arm. This will then indicate that the insulation resistance of the conductors being tested are impaired.

The 228078-2 is a reliable and accurate device designed to measure an extensive range of resistance values, nominal and maximum in a wide variety of different insulation types. This device measures the actual insulation resistance of a conductor. It can also be used for testing the quality of insulation between an electrical conductor and the ground, to diagnose damage to insulation or grounds, or to monitor the quality of insulation in an existing or new installation. The functions of the 228078-2 can be used to determine the quality of insulation in existing systems or for the measurement of insulation values in new systems before installation.

The 228078-2 device incorporates an active sensing element that eliminates measurement errors due to contact resistance. It also eliminates the need for manual adjustment when measuring different insulation types. The device has a built-in display and LED indicators for easy measurement and viewing, and the calculated result can be transmitted to a remote controller or PC using the appropriate wiring.

The 228078-2 device can be used in many different application fields, such as for the measurement of breakdown voltage of various materials, for measuring insulation resistance of coils, for measuring insulation resistance and dielectric strength of single and multiple-layer insulating materials, for testing insulation failure of contact materials, for measuring ground resistance, for measuring capacitance of high-voltage capacitor, for measuring leakage current in high-voltage lines and circuits, for measuring resistance of contact materials, and for determining the correct connections of electrical lines.

The 228078-2 is an efficient and reliable testing device that is used to measure a wide range of insulation parameters, and it is suitable for use in a variety of different application fields. The device functions accurately and has user-friendly display and indicators to make the measurement process easier and more convenient. The device is also convenient to use since it does not require manual adjustment when measuring different insulation types. It is an integral tool for ensuring the safety of installations, equipment and personnel. Therefore, the 228078-2 device is an invaluable tool for any electrical engineer or technician.

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