Technical Features

	U1381	U 1389	U1387	U1289	U1281
Item number	U1381	U1389	U1387	U1289	U1281
Product details page	Details	Details	Details	Details	Details
Pulse output	None (only with bus connection)	Electrical	None (only with bus connection)	Electrical	None (only with bus connection)	Electrical	None (only with bus connection)	Electrical	None (only with bus connection)	Electrical
Interpulse period	> 30 ms	> 30 ms	> 30 ms	> 30 ms	> 30 ms
Relative humidity	< 75% annual average	< 75% annual average	< 75% annual average	< 75% annual average	< 75% annual average
Interference emission	EN 55022: Class B	EN 55022: Class B	EN 55022: Class B	EN 55022: Class B	EN 55022: Class B
Burst	2 kV	2 kV	2 kV	2 kV	2 kV
Chapter06	Overload capacity	Overload capacity	Overload capacity	Overload capacity	Overload capacity
Sampling rate	Continuous, 32 per period	Continuous, 32 per period	Continuous, 32 per period	Continuous, 32 per period	Continuous, 32 per period
Protection	IP 20	IP 20	IP 20	IP 20	IP 20
Power consumption	Voltage path, total including supply: < 2 VA	Voltage path, total including supply: < 2 VA	Voltage path, total including supply: < 2 VA	Voltage path, total including supply: < 2 VA	Voltage path, total including supply: < 2 VA
Rated insulation voltage	Input: 300 V AC Output: Feature V1, V2: 50 V DC (S0 and bus) Output: Feature V3, V4: 230 V AC (pulse)	Input: 300 V AC Output: Feature V1, V2: 50 V DC (S0 and bus) Output: Feature V3, V4: 230 V AC (pulse)	Input: 300 V AC Output: Feature V3, V4: 230 V AC (pulse) Output: Feature V1, V2: 50 V DC (S0 and bus)
Material	Lexan polycarbonate per UL94 V0	Lexan polycarbonate per UL94 V0	Lexan polycarbonate per UL94 V0	Lexan polycarbonate per UL94 V0	Lexan polycarbonate per UL94 V0
Chapter02	LCD	LCD	LCD	LCD	LCD
Limit frequency	45Hz - 65Hz	45Hz - 65Hz	45Hz - 65Hz	45Hz - 65Hz	45Hz - 65Hz
Pulse output U(ext)	Max. 40 V (375 V with feature V3,V4)	Max. 40 V (375 V with feature V3,V4)	Max. 40 V (375 V with feature V3,V4)	Max. 40 V (375 V with feature V3,V4)	Max. 40 V (375 V with feature V3,V4)
Chapter08	Pulse output	Pulse output	Pulse output	Pulse output	Pulse output
Minimum current rating (Imin)	0.01A	0.01A	0.01A	0.1A	0.1A
Voltage input	≤ 2,5mm sq. mm with wire end ferrule or ≤ 2 x 1.5 sq. mm without wire end ferrule	≤ 2,5mm sq. mm with wire end ferrule or ≤ 2 x 1.5 sq. mm without wire end ferrule	≤ 2,5mm sq. mm with wire end ferrule or ≤ 2 x 1.5 sq. mm without wire end ferrule	≤ 2,5mm sq. mm with wire end ferrule or ≤ 2 x 1.5 sq. mm without wire end ferrule	≤ 2,5mm sq. mm with wire end ferrule or ≤ 2 x 1.5 sq. mm without wire end ferrule
Display range	0Bit - 9999999Bit	0Bit - 9999999Bit	0Bit - 9999999Bit	0Bit - 9999999Bit	0Bit - 9999999Bit
Pulse duration	30 ms	30 ms	30 ms	30 ms	30 ms
Max. altitude	2000m	2000m	2000m	2000m	2000m
Weight	< 0.5 kg	< 0.5 kg	< 0.5 kg	< 0.5 kg	< 0.5 kg
Interface / bus connection	LON M-Bus L-Bus	LON L-Bus M-Bus	L-Bus M-Bus LON	LON	LON M-Bus L-Bus
Chapter10	Mechanical data	Mechanical data	Mechanical data	Mechanical data	Mechanical data
Type	7-segment characters	7-segment characters	7-segment characters	7-segment characters	7-segment characters
Chapter05	Electrical safety	Electrical safety	Electrical safety	Electrical safety	Electrical safety
Chapter07	EMC	EMC	EMC	EMC	EMC
Protection class	II	II	II	II	II
Phase sequence/phase	Blinks in case of error	Blinks in case of error	Blinks in case of error	Blinks in case of error	Blinks in case of error
Chapter04	Power consumption	Power consumption	Power consumption	Power consumption	Power consumption
So pulse output, �, tariff input	≤ 2,5mm sq. mm with wire end ferrule or ≤ 2 x 1.5 sq. mm without wire end ferrule	≤ 2,5mm sq. mm with wire end ferrule or ≤ 2 x 1.5 sq. mm without wire end ferrule	≤ 2,5mm sq. mm with wire end ferrule or ≤ 2 x 1.5 sq. mm without wire end ferrule	≤ 2,5mm sq. mm with wire end ferrule or ≤ 2 x 1.5 sq. mm without wire end ferrule	≤ 2,5mm sq. mm with wire end ferrule or ≤ 2 x 1.5 sq. mm without wire end ferrule
Accuracy of reactive energy	2	2	2	2	2
Conducted interference	10 V	10 V	10 V	10 V	10 V
Operation site	Indoors	Indoors	Indoors	Indoors	Indoors
Surge voltage	6kV, 1,2/50µs 10+/10- surges	6kV, 1,2/50µs 10+/10- surges	6kV, 1,2/50µs 10+/10- surges	6kV, 1,2/50µs 10+/10- surges	6kV, 1,2/50µs 10+/10- surges
Magnetic field and line frequency	0.5 mT	0.5 mT	0.5 mT
Display refresh	Approx. 6 s	Approx. 6 s	Approx. 6 s	Approx. 6 s	Approx. 6 s
Chapter09	Ambient conditions	Ambient conditions	Ambient conditions	Ambient conditions	Ambient conditions
Chapter01	Measuring ranges	Measuring ranges	Measuring ranges	Measuring ranges	Measuring ranges
Chapter03	Power supply	Power supply	Power supply	Power supply	Power supply
Starting current	2mA	2mA	2mA	20mA	20mA
Electrostatic discharge	15 kV	15 kV	15 kV	15 kV	15 kV
Main display	7-place, height: 6 mm	7-place, height: 6 mm	7-place, height: 6 mm	7-place, height: 6 mm	7-place, height: 6 mm
Voltage path	2/3-wire meter: < 2 VA 4-wire meter: < 1 VA per phase (including supply power)	2/3-wire meter: < 2 VA 4-wire meter: < 1 VA per phase (including supply power)	2/3-wire meter: < 2 VA 4-wire meter: < 1 VA per phase (including supply power)
Permissible deviation	-0,75	-0,75	-0,75	-0,75	-0,75
Pulse run generator constants	With transformer connection: 1000 pulses per kWh	With transformer connection: 1000 pulses per kWh	With transformer connection: 1000 pulses per kWh	With direct connection: 1000 pulses per kWh	With direct connection: 1000 pulses per kWh
Reference current (Iref)	1A	1A	1A	5A	5A
Dimensions (W x H x D)	Height: ≤ 90mm Overall depth: ≤75 mm Width: 125.5 +0.5 mm	Height: ≤ 90mm Overall depth: ≤75 mm Width: 125.5 +0.5 mm	Height: ≤ 90mm Overall depth: ≤75 mm Width: 125.5 +0.5 mm
Mounting type	Top-hat rail per DIN EN 50022 or wall mounting	Top-hat rail per DIN EN 50022 or wall mounting	Top-hat rail per DIN EN 50022 or wall mounting	Top-hat rail per DIN EN 50022 or wall mounting	Top-hat rail per DIN EN 50022 or wall mounting
External supply	Auxiliary voltage: 24 V ± 10% Current consumption: < 1 W	Auxiliary voltage: 24 V ± 10% Current consumption: < 1 W	Auxiliary voltage: 24 V ± 10% Current consumption: < 1 W
Switching current	Max. 27 mA (100 mA with feature V3, V4)	Max. 27 mA (100 mA with feature V3, V4)	Max. 27 mA (100 mA with feature V3, V4)	Max. 27 mA (100 mA with feature V3, V4)	Max. 27 mA (100 mA with feature V3, V4)
Insulation test current	Input <-> output / housing: 4 kV AC Output <-> housing: Feature V1, V2: 500 V (S0 and bus) Output <-> housing: Feature V3, V4: 4 kV (pulse)	Input <-> output / housing: 4 kV AC Output <-> housing: Feature V1, V2: 500 V (S0 and bus) Output <-> housing: Feature V3, V4: 4 kV (pulse)	Input <-> output / housing: 4 kV AC Output <-> housing: Feature V1, V2: 500 V (S0 and bus) Output <-> housing: Feature V3, V4: 4 kV (pulse)
Auxiliary display	8-place, height: 5�mm	8-place, height: 5�mm	8-place, height: 5�mm	8-place, height: 5�mm	8-place, height: 5�mm
Overload capacity	All meters: Continuous, 1.15 Ur and Imax Current transformer connection: 0.5 s 20 x Imax Current transformer connection: continuous,10 x Imax	All meters: Continuous, 1.15 Ur and Imax Direct connection: 5 x 3 sec.: Ur and 100 A (interval: 5 min.) Direct connection: 5 x 3 sec.: 1 x 1 sec.: Ur and 250 A	All meters: Continuous, 1.15 Ur and Imax Direct connection: 5 x 3 sec.: Ur and 100 A (interval: 5 min.) Direct connection: 5 x 3 sec.: 1 x 1 sec.: Ur and 250 A
Storage temperature	-25°C - 70°C	-25°C - 70°C	-25°C - 70°C	-25°C - 70°C	-25°C - 70°C
Current input	Solid wire ≤ 16 sq. mm, without wire end ferrule	Solid wire ≤ 16 sq. mm, without wire end ferrule	Solid wire ≤ 16 sq. mm, without wire end ferrule	Solid wire ≤ 16 sq. mm, without wire end ferrule	Solid wire ≤ 16 sq. mm, without wire end ferrule
Internal power supply	80 to 115% Ur	80 to 115% Ur	80 to 115% Ur	80 to 115% Ur	80 to 115% Ur
Electrostatic fields	10 V/m under load 30 V/m at idle	10 V/m under load 30 V/m at idle	10 V/m under load 30 V/m at idle
Power consumption per current path	Where Imax < 0.03 VA (transformer) Where Iref < 0.001 VA (transformer)	At Imax: < 1 VA (direct) Where Iref < 0.02 VA (direct)	Where Imax < 1 VA (direct) Where Iref < 0.02 VA (direct)
Error message	Highlighted in color for severe errors	Highlighted in color for severe errors	Highlighted in color for severe errors	Highlighted in color for severe errors
Operating temperature range	-25°C - 55°C	-25°C - 55°C	-25°C - 55°C	-25°C - 55°C	-25°C - 55°C
Type of meter	Electronic	Electronic	Electronic	Electronic	Electronic
Nominal current (In)	6A	6A	6A	65A	65A
Max. current (Imax)	6A	6A	6A	65A	65A
Nominal voltage (Un) N-L	100V - 500V	100V - 500V	100V - 500V	100V - 500V	100V - 500V
Nominal voltage (Un) L-L		100V - 400V	100V - 500V
Frequency
Accuracy class	B	B	B	B	B
Pole type	Not applicable	Not applicable	Not applicable	Not applicable	Not applicable
Model	Measurement transformer	Measurement transformer	Measurement transformer	Direct measurement	Direct measurement
Energy type	Blind power	Blind power	Blind power	Effective power and blind power	Effective power and blind power
Suitable for	Purchase	Purchase	Purchase	Purchase	Purchase
Tariff type	Multi-tariff	Multi-tariff	Multi-tariff	Multi-tariff	Multi-tariff
Measuring type load profile
Escapement mechanism
Calibrated	x	x	x	x	x
Approval	Measuring Instruments Directive	Measuring Instruments Directive	Measuring Instruments Directive	Measuring Instruments Directive	Measuring Instruments Directive
Pulse type	S0	S0	S0	S0	S0
Pulse rate	1Imp/kWh (kvarh) - 10000Imp/kWh (kvarh)	1Imp/kWh (kvarh) - 10000Imp/kWh (kvarh)	1Imp/kWh (kvarh) - 10000Imp/kWh (kvarh)	1Imp/kWh (kvarh) - 1000Imp/kWh (kvarh)	1Imp/kWh (kvarh) - 1000Imp/kWh (kvarh)
Type of indication	Digital	Digital	Digital	Digital	Digital
Width in number of modular spacings	7	7	7	7
Type of interface	LON bus	LON bus	LON bus	LON bus	LON bus
EEC40 signature
With lock code
Degree of protection (IP)	Other	Other	Other	Other	Other
Tariff control	Internal/external	Internal/external
Number of positions total (counter)	3