GridSense Line IQ LIQ60, User Manual, Page: 38 / 39

File: LIQ User Manual V2.0
Page 36 of 37
Appendix C
– LIQ-60 Specifications
C.LIQ-60 specifications
Application
Medium V / High V overhead distribution network sensing and measurement, 4 wire, multiple grounds, 3 wire,
single phase, SWER and mixed circuit installations.
Item Description
Interfaces
Communication Local-RF Communication RF range 30m (100ft) line of sight.
Status indicators Three high intensity LEDs, 2 x red & 1 x amber
Sensing and logging
Line voltage 5kV to 138kV
Frequency 45 to 65Hz
Current sensor Fault detection range: 5A
– 25kA
Load logging range: 1A
– 25kA (Ac/- 5% or +/- 1A, whichever is greater).
Trigger principle Proprietary algorithms based on current and voltage ratios, adaptive to the line
signature i.e. load and voltage history. Inrush restraint.
Memory Total Memory = 196 Kbytes available.
Event data = 32 Kbytes Load log = 164 Kbytes (optional)
Logged data Time stamped, pre and post voltage status, pre and post current values, 200ms of
fault current waveform (60ms pre and 140ms post fault), 2nd harmonic calculations.
Mechanical and Power
Battery specifications 4 x 2V, 2.5Ah rechargeable SLA Battery, 10 years life typ.
Power source Dual power circuitry
– Solar panel and internal SLA Battery. Battery specifications:
4 x 2V 2.5Ahr creating a 10Ahr battery pack.
Solar charging max 150mA gives 100% charge in approx. 17 days.
External Charging max 5A, charge time approx. 3 hours.
Current use Normal operation (No RF Transmission) = 5mA.
Clamping mechanism A spring loaded conductor clamp. Mounting and de-mounting by means of hot stick.
Conductor size Approx. 6mm (0.25 inch)
– 32mm (1.25 inch) diameter.
Weight 2kg (4.4lb)
Dimensions Height: 315mm (12.4 in), Depth: 180mm (7 in), Width: 140mm (5.5 in)
Environmental
Temperature ranges Ambient operating range - 40ºC to +70ºC (- 40ºF to +160ºF)
Range for accuracy - 20ºC to +65ºC (- 4ºF to +120ºF)
Conductor operating range - 40ºC to +130ºC (- 40ºF to +265ºF)
Conductor, guaranteed accuracy - 20ºC to +90ºC (- 4ºF to +195ºF)
Humidity range 0 % to 100 %