Lauritz Knudsen WL4000 KWH Digital Panel Meter

• Accuracy class 1 as per IEC 62053-21
• True RMS measurement
• Simultaneous sampling of Volta & Amps
• Positive accumulation of active enegry even with CT polarity reversal, reverse lock programmable
• Auto scrolling
• Auto scalling of kilo, Mega Giga
• Low PT, CT burden
• Programmable PT, CT ratio
• Field programmable 3 Phase 4 wire, 3 Phase 3 wire, 1 Phase configuration
• Old register to store the previously cleared energy value
• Wide operating range of 80 to 300 V AC/DC auxilary supply
• Site selectable 1A/5A
• Energy display format programmable-counter based or resolution based.

Input Voltage:
55-550VLL
(PT Primary nad secondary user programmable for LT HT applications)
Burden: 0.2VA max per phase

Input Current:
-/5A and -/1A site selecable
Current range from 10%  to 120% of In (50mA-6A), Strating current: 0.4% of full scale
CT Primary nad secondary user programmable for LT HT applications

Product Weight & Dimensions:
Product Weight: 300gms
Bezel Dimension (WxHxD): 96x96x58 mm
Panel Cutout: 92x92 mm

Frequency:  40-70Hz
Aux Voltage: 80-300V AC/DC
Impulse voltage type: +-6KV as per IEC 62052-11
AC voltage test: 4KV double insulation as per 62053-21
Insulation resistance: 500 V DC as per IS 13779
Operating temperature: -10DC  to +55DC
Storage temperature: -25DC to +70DC
Humidity: 5% to 95% relative humidity non-condensing
Recommended wire: 2.5 Sqmm
Shock: As per standard IEC 60068-2
Vibration: 10 to 55 Hz, 0.5mm amplitude
Casing: Plastic mould protected to IP51 from front side
Measurement category: CAT lll
Pollution Degree: 2
Protection: IP20 at terminals, IP51 on front
Meter constant: 1250/ (external CT ratio x PT ration)
Type: Rs485 Port Modbus RTU
Certification: CE, RoHS