Product Introduction
The UHV-2671A Digital Megohmmeter, manufactured by Wuhan UHV, is designed using medium- and large-scale integrated circuits.Wuhan UHV Power Technology Co.,Ltd., is a professional manufacturer and supplier of high-voltage power testing equipment in China.
This meter features high output power, a high short-circuit current value, and multiple output voltage levels.The operating principle is as follows: the DC high voltage generated by DC/DC conversion from the internal battery serves as the power source. This voltage is applied from the E terminal to the L terminal through the device under test, generating a current flow from E to L. After I/V conversion and division, the measured insulation resistance value is directly displayed on the LCD screen.
 |  |
Product Characteristics
1. Auto Discharge Function: Ensures safer operation by automatically discharging residual voltage.
2. LCD Backlight: Provides clear visibility in low-light conditions.
3. Live Wire Warning: Features audible indication to alert users when a live wire is detected.
4. Auto Power-Off: Automatically powers off after 10 minutes of inactivity to conserve battery life.
5. Low Battery Indication: Alerts the user when the battery level is low, ensuring timely replacement or recharging.
Parâmetros técnicos
| A tensão nominal | 100 V | 250 V | 500 V | 1000V | 2500V |
| Faixa de medição | 0.0-10MΩ 10-100MΩ 100-200MΩ | 0.0-10MΩ 10-100MΩ 100-500MΩ | 0.0-99.9MΩ 100-999MΩ | 0.0-99.9MΩ 100-999MΩ 1.00-19.9GΩ | 0.0-99.9MΩ 100-999MΩ 1.00-9.99GΩ 10.0-49.9GΩ |
O circuito aberto tensão | CC 100V+10% | CC 250V+10% | CC 500V +20% | CC 1000V+20% | CC 2500V+20% |
Medição padrão atual | 0.5MΩ When the load 0,2mA-0,25mA | 0.5MΩ When the load 0,5ma-0,55ma | 0.5MΩ When the load 1ma-1,1ma | 1.0MΩ When the load 1ma-1,1ma | 2.5MΩ When the load 1ma-1,1ma |
| Curto circuito | cerca de 1,3ma | ||||
| precisão | ±5%rdg±5dgt | ||||
Medição de Tensão
| AC Vire-se | |
| Faixa | 30-600 V (50/60 Hz) |
| Resolução | 1V |
| Precisão | ±2%rdg±3dgt |
Especificação técnica
| Parâmetro | Índice |
| tela de LCD | Máximo de 999 contagens |
| Indicação acima da faixa | OL：appears on insulation resistance LO：appears on voltage |
| Alcance automático | Mudança de toque para faixa superior: 1000 contagens Mudança de faixa para faixa inferior: 95 contagens (somente em isolamento) |
| Taxa de amostragem | 0,5-10 vezes/seg |
| Operação | ≤2000m(indoor use) |
| O ambiente operacional | The temperature：0°C-40°C humidity：≤85% |
| Ambiente de armazenamento | The temperature：-20°C-60°C humidity：≤90% |
| Proteção de sobrecarga | Insulation resistance range: AC 1200V/10 seconds Voltage range: AC 720V/10 seconds |
| Tensão suportável | AC 8320V（50/60Hz）/5 seconds (between circuit and periphery) |
| Impedância de isolamento | >1000MQ/DC 1000V(Entre o circuito e a periferia) |
| fonte de energia | DC9V (bateria AA de 6 * l,5V) |
| Bateria | Aproximadamente. 800ma (máx.) |
| Vida útil da bateria | Aproximadamente. 15 horas |
| Dimensão | 125,4 x 174,6 x 69 mm |
| Peso | 547,44g (sem bateria e fio de teste) |
Application Scenarios
Power cable insulation testing
Used to test the insulation performance between cable cores, and between cores and ground. Commonly used in cable installation acceptance, maintenance, and fault diagnosis.
Motor / generator insulation testing
Used to test the insulation condition of motor and generator windings, determining whether there are issues such as moisture, aging, or degraded insulation performance.
Transformer insulation testing
Used to test the insulation performance between transformer windings and ground, and between windings. It is an important test item in transformer maintenance and preventive maintenance.
Switchgear / distribution cabinet insulation testing
Used to check the insulation condition of electrical circuits inside switchgear and distribution cabinets, suitable for installation commissioning, pre-energization inspection, and routine maintenance.
Substation electrical equipment insulation testing
Used for insulation condition checking of various electrical equipment in substations, helping to identify potential leakage and insulation aging issues.
Preventive maintenance of industrial electrical equipment
Used for periodic insulation testing of motors, cables, distribution equipment, and other electrical equipment in factories, reducing the risk of equipment failure and unplanned downtime.
Building electrical line installation acceptance
Used for line insulation testing before completion and energization of building electrical projects, confirming that electrical lines meet safety operation requirements.
Electrical equipment fault diagnosis and repair
Used for insulation testing when equipment experiences leakage, tripping, or abnormal operation, assisting in determining whether equipment has insulation damage, moisture, or aging issues.
Photovoltaic / new energy electrical system insulation testing
Can be used for insulation testing of cables and electrical circuits in some photovoltaic, energy storage, and other new energy systems, suitable for installation commissioning and operation and maintenance inspection.
Frequently Asked Questions
Q: What is this insulation resistance tester mainly used for?
A: It is mainly used for testing the insulation performance of electrical equipment and cables, determining whether there are issues such as insulation aging, moisture, or leakage.
Q: What are the common causes of abnormal insulation resistance test results?
A: Common causes include equipment moisture, insulation aging, damaged insulation materials, surface contamination, broken wiring, or abnormal connections. The specific cause requires further inspection.
Q: What problem is this device best suited to solve?
A: Its core purpose is to help users determine the insulation condition of electrical equipment and cables. It is used for installation acceptance, routine maintenance, fault diagnosis, and post-repair safety inspections.
Maintenance
