中文版
Description
(for 3kV-40.5kV Power Distribution Networks)
—EKL1B
Earth Fault Indicator indicates the grounding fault by detecting the zero sequence currents. With visual or audible indicators, it helps line patrol staff to fast find out the location where there is a grounding fault on the 3kV-40.5kV power distribution networks, switchgears or cable branching units etc.
Earth fault alarm indication
Earth fault sensor installed on the bifurcation unshielded part of three-phase cable, detection the zero sequence current value of the three-phase cable, when its value reach or exceed Threshold currents for grounding fault alarm (this value can be set as per user requirement), the earth fault sensor outputs alarm signal, through optical fiber the signal will be sent to the indicator host, the earth fault indicator light will flash to alarm the earth fault.
Product Features
- Earth fault detection a grounding current sensor
- Earth fault indication by one super bright LED display
- Remote indication via 2 relay contacts
- Auxiliary power supply: 24V-230V DC/AC or built-in Li-ion battery with low-power-status indication
- Reset/Test Button
- Remote reset
- Auto-reset: 7s/8h/12h/24h reset time for options
Technical Data
| Voltage Level | 3kV-40.5kV | ||
| Ambient | Temperature | -25°C to +70°C | |
| Humidity | ≤95% | ||
| Threshold Currents for Grounding Fault Alarm | 10A-100A | ||
| Alarm Current Accuracy | ±10% | ||
| Alarm Response Time | Grounding Fault | 40ms | |
| Working Current | Stand By | ≤10uA | |
| Indication Alarm | ≤0.5mA | ||
| Auto Reset Time | 7s/8H/12H/24H | ||
| Auxiliary Power Supply | Built-in Battery | Li-ion 3.6V/ 2.25Ah | |
| External | 24V-230V DC/AC | ||
| Capacity of Relay Contacts | 2A 30VDC/1A 125VAC | ||
| Applicable Conductor Diameter | Grounding Sensor | Type A | Φ60mm~Φ100mm |
| Type C | Φ80mm~Φ130mm | ||
| Protection Class | Indicator | IP40 | |
| Sensor | IP65 | ||
| Fiber Cable Length for Grounding Sensor | 2.5m can be customized | ||
| Panel Window Size (WxH) | 92x45mm | ||
| Indicator Size (WxHxD) | 96X48x69mm | ||
| Sensor Size (WxHxD) | 40x44x27mm | ||
Product Dimensions
Terminal Diagram
| No. | Marks | Definitions | |
| 5 | White | Earth Fault Sensor | White cable terminal of earth fault sensor |
| 6 | Brown | Brown cable terminal of earth fault sensor | |
| 7 | Not connected | Not connected | |
| 8 | |||
| 9 | |||
| 10 | White | Blinking Lamp | White cable terminal of external alarm device. |
| 11 | Brown | Brown cable terminal of external alarm device. | |
| 11 | Remote Reset | Remote reset terminal | |
| 12 | |||
| 13 | Relay | Common contact of fault signal remote transmission relay | |
| 14 | Normally-closed contact of fault signal remote transmission relay | ||
| 15 | Normally-open contact of fault signal remote transmission relay | ||
Ordering Information
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