ET-1000 DC System Earth Fault Detector
The device is used to find the DC system ground exact location of power plants and substations under power-on state.
Description
The device is used to find the DC system ground exact location of power plants and substations under power-on state. It can quickly find the earthing contact to various types of ground fault; the accuracy rate reaches 100%.
Product characteristics
1.Easy to use, customers can directly operate only need turn on the power switch.
2.Safe and reliable, do not need power off the charger or other power source, without effects to DC system.
3.Applies to various voltage class, DC system 220V, 110V, 48V, 24V.
4.Wide range of application, any power plant, transformer substation, colliery, chemical plant and others power supply departments.
5.Easy to carry, the signal receiver equipped with battery, do not need external power source.
6.DC system do not need power off when searching the earthing contact, do not affect the normal work of the system.
7.Strong anti-jamming ability, without the effects by system distributed capacitance.
8.Intelligent charge Management, shorten the charging time, lengthen the battery life.
Technique Parameters
| Signal generator | Output signal frequency | 2.5Hz |
| Signal no-load output voltage | ±20V±5% | |
| Signal voltage amplitude error | <5% | |
| Signal short circuit output current | ≤80mA | |
| Output terminal shock resistance capability | 400V DC impulse | |
| Supply voltage | AC220V±10% | |
| Voltage frequency | 50Hz±5% | |
| Input fuse | 2A | |
| Maximum power | 3W | |
| Dimension | 300×270×200mm3 | |
| Signal receiver | Signal current measurement sensitivity | 0.5mA |
| Impedance of signal receiver | 40KΩ | |
| Maximum output current | 2.5 mA | |
| Display of receiver | Number 0～19 | |
| Dimension | 210×100×32mm3 | |
| A jaw size | Φ50mm | |
| B jaw size | Φ7mm×9mm | |
| Complete appliance | Measured maximum ground resistance | 300kΩ |
| Ground resistance measurement accuracy | 0～4.5KΩ，error ≤0.5KΩ | |
| 4.5KΩ～300KΩ，error ≤10% |
| No. | Product Name | QTY |
| 1 | Signal transmitter | 1 |
| 2 | Signal receiver | 1 |
| 3 | A clamp | 1 |
| 4 | A clamp | 1 |
| 5 | Signal output line | 1 |
| 6 | Power cable | 1 |
| 7 | Battery | 5 |
| 8 | 2A fuse | 2 |
| 9 | Aluminum alloy box | 1 |
| 10 | Manual | 1 |
| 11 | Test Report | 1 |
| 12 | Certificate | 1 |
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