Lightning ShieldTM - intelligent protection of remote sites from GPR.
This GPR Protection system detects imminent lightning GPR and pre-emptively disconnects the commercial power circuit to isolate the ground fault path to the power neutral system. Operations safely continue on the resident battery plant until the threat passes; then commercial power is automatically reconnected.
Simultaneously disconnecting the phase and neutral conductors preserves the system integrity; and the safety ground is always maintained. AC disconnection simply blocks the potential fault path through the site electronics.
Opening the AC circuit effectively creates a single point ground condition. The site ground potential rises and falls with the Ground Potential Rise, but fault current can not flow through an open circuit. The only low impedance path to ground for the fault energy is the grounding system.
Features:
- Detects imminent lightning before the strike, pre-emptively disconnecting the potential fault path from GPR
- Detection sensitivity is adjustable over a wide range to accommodate atmospheric, soil resistivity and seasonal variations
- Adjustable AC window comparator blocks power grid anomalies - fast transients, surges and sags
- Visual and relay alarms to communicate status
- Optionally configured with Remote ManagerTM (see below)
- Simple installation, modular design and low maintenance
| Models | AC Breaker Rating | Max Site Draw | AC Wire Gauge |
|---|---|---|---|
| LS-50 | 50 Amp | < 50A Res – 32 FLA | 14 – 8 AWG |
| LS-200 | 200 Amp | < 200A Res – 115 FLA | 8 – 2/0 AWG 8 – 250 MCM |
| LS-300 * | 300 Amp | < 300A Res – 225 FLA | 4 – 350 MCM |
All LS models available in 120 or 240 VAC, single phase
* 2009 release
Remote ManagerTM is a Control Module upgrade of the Lightning Shield system.
Remote Manager provides remote test, monitoring and control over an Ethernet data network or POTS line. Protection parameters can be remotely tested and adjusted, system and event status are continuously updated and logged, event history may be down loaded, and the resident battery plant and generator can be remotely tested.
Features:
- Access site from any browser enabled device (POTS line or Ethernet TCP/IP)
- Remotely configure GPR and AC protection parameters
- Status fault event type, duration and protection response
- Log 1,000 events and download to ASCII text file, import to spreadsheet
- Remotely test: Lightning Shield, Battery (discharge profile) and Generator