NORTONICS MOVING IRON AC AMMETERS TYPES D48SD, D72SD & D96SD


Accuracy:
Class 1.5

Burden:
1A & 5A movements 0.7VA
6A to 30A movements 1.2VA
40A movements and above 2.4VA

Ranges:
1/1.5/2/2.5/4/5/6/l0/15/20/25/30/40/50/60/80/l00Amps (D48SD only up to 40A)
1A & 5A movements also used as CT input ie, D72SD/CT5-100x6

Overscales:
British standard x6. On request x2, x5 or no overscale

Nortonics Square Din Switchboard Instruments

The Nortonics range of Din standard analogue meters are available in both 48mm, 72mm and 96mm. The moving iron ammeters are fitted with the British standard x6 overload scale. However x5, x2 and no overload options are also readily available. The Nortonics range as standard are supplied with 90� movements, 240� movements are alsoavailable to order - please contact the Nortonics sales office.

ASK231.5 Features


FOOT OR BUS-BAR MOUNTED

SNAP FIT SECONDARY TERMINAL COVERS

INSULATED ENDS TO BUS-BAR PINCH SCREWS

TRANSFORMER WIDTH 49.5mm

MAX CONDUCTOR SIZE 28mm DIA.

MAX BUS-BAR SIZE 30 x 10mm

PRIMARY RANGES FROM 50AMPS TO 600AMPS

1AMP OR 5AMP SECONDARIES

ASK31.3 Features


DIN RAIL, BUS-BAR OR FOOT MOUNTED

SNAP FIT SECONDARY TERMINAL COVERS

INSULATED ENDS TO BUS-BAR PINCH SCREWS

TRANSFORMER WIDTH 60mm

MAX CONDUCTOR SIZE 26mm DIA

MAX BUS-BAR SIZE 30 x 10mm

PRIMARY RANGES FROM 50AMPS TO 750AMPS

1AMP OR 5AMP SECONDARIES

ASK31.5 Features


DIN RAIL, BUS-BAR OR FOOT MOUNTED

SNAP FIT SECONDARY TERMINAL COVERS

INSULATED ENDS TO BUS-BAR PINCH SCREWS

TRANSFORMER WIDTH 60mm

MAX CONDUCTOR SIZE 28mm DIA.

MAX BUS-BAR SIZE 2 X 20 X 10mm OR 30 X 10mm

PRIMARY RANGES FROM 40AMPS TO 600AMPS

1AMP OR 5AMP SECONDARIES

ASK318.3 Features


DIN RAIL, BUS-BAR OR FOOT MOUNTED

SNAP FIT SECONDARY TERMINAL COVERS

INSULATED ENDS TO BUS-BAR PINCH SCREWS

TRANSFORMER WIDTH 60mm

MAX CONDUCTOR SIZE 26mm DIA

MAX BUS-BAR SIZE 31 x 18mm

PRIMARY RANGES FROM 60AMPS TO 750AMPS

1AMP OR 5AMP SECONDARIES

ASK41.3 Features


DIN RAIL, BUS-BAR OR FOOT MOUNTED

SNAP FIT SECONDARY TERMINAL COVERS

INSULATED ENDS TO BUS-BAR PINCH SCREWS

TRANSFORMER WIDTH 60mm

MAX CONDUCTOR SIZE 26mm DIA

MAX BUS-BAR SIZE 40 x 12mm OR 32 x 18mm

PRIMARY RANGES FROM 100AMPS TO 800AMPS

1AMP OR 5AMP SECONDARIES

ASK41.4 Features


DIN RAIL, BUS-BAR OR FOOT MOUNTED

SNAP FIT SECONDARY TERMINAL COVERS

INSULATED ENDS TO BUS-BAR PINCH SCREWS

TRANSFORMER WIDTH 70mm

MAX CONDUCTOR SIZE 32mm DIA

MAX BUS-BAR SIZE 40 x 10mm OR 2 x 30 x 5mm

PRIMARY RANGES FROM 50AMPS TO 1000AMPS

1AMP OR 5AMP SECONDARIES

ASK412.4 Features


DIN RAIL, BUS-BAR OR FOOT MOUNTED

SNAP FIT SECONDARY TERMINAL COVERS

INSULATED ENDS TO BUS-BAR PINCH SCREWS

TRANSFORMER WIDTH 70mm

MAX CONDUCTOR SIZE 30.5mm DIA

MAX BUS-BAR SIZE 40 x 12mm OR 30 x 15mm

PRIMARY RANGES FROM 50AMPS TO 800AMPS

1AMP OR 5AMP SECONDARIES

ASK51.4 Features


FOOT MOUNTED OR BUS-BAR MOUNTED

SNAP FIT SECONDARY TERMINAL COVERS

INSULATED ENDS TO BUS-BAR PINCH SCREWS

TRANSFORMER WIDTH 85mm

MAX CONDUCTOR SIZE 44mm DIA

MAX BUS-BAR SIZE 2 X 40 X 10 mm OR 50 X 12mm

PRIMARY RANGES FROM 100AMPS TO 1200AMPS

1AMP OR 5AMP SECONDARIES

ASK541.4 Features


FOOT MOUNTED OR BUS-BAR MOUNTED

SNAP FIT SECONDARY TERMINAL COVERS

INSULATED ENDS TO BUS-BAR PINCH SCREWS

TRANSFORMER WIDTH 85mm

MAX CONDUCTOR SIZE 32mm DIA

MAX BUS-BAR SIZE 2 x 30x 5mm OR 40 x 10mm

PRIMARY RANGES FROM 30AMPS TO 1000AMPS

1AMP OR 5AMP SECONDARIES

ASK561.4 Features


FOOT OR BUS-BAR MOUNTED

SNAP FIT SECONDARY TERMINAL COVERS

INSULATED ENDS TO BUS-BAR PINCH SCREWS

TRANSFORMER WIDTH 85mm

MAX CONDUCTOR SIZE 44mm DIA

MAX BUS-BAR SIZE 60 x 10mm OR 2 x 50 x 10mm

PRIMARY RANGES FROM 200AMPS TO 1200AMPS

1AMP OR 5AMP SECONDARIES

ASK61.4 Features


FOOT OR BUS-BAR MOUNTED

SNAP FIT SECONDARY TERMINAL COVERS

INSULATED ENDS TO BUS-BAR PINCH SCREWS

TRANSFORMER WIDTH 95mm

MAX CONDUCTOR SIZE 44mm DIA

MAX BUS-BAR SIZE 63 x 10mm OR 2 x 50 x 10mm

PRIMARY RANGES FROM 200AMPS TO 1600AMPS

1AMP OR 5AMP SECONDARIES

ASK63.4 Features


FOOT OR BUS-BAR MOUNTED

SNAP FIT SECONDARY TERMINAL COVERS

INSULATED ENDS TO BUS-BAR PINCH SCREWS

TRANSFORMER WIDTH 95mm

MAX CONDUCTOR SIZE 44mm DIA

MAX BUS-BAR SIZE 60 x 30mm OR 50 x 40mm

PRIMARY RANGES FROM 300AMPS TO 2000AMPS

1AMP OR 5AMP SECONDARIES

ASR20.3 Features


DIN RAIL MOUNTED OR FOOT MOUNTED

SNAP FIT SECONDARY TERMINAL COVERS

TRANSFORMER WIDTH 44mm

MAX CONDUCTOR SIZE 21mm DIA

PRIMARY RANGES FROM 50AMPS TO 300AMPS

1AMP OR 5AMP SECONDARIES

ASR21.3 Features


DIN RAIL MOUNTED OR FOOT MOUNTED

SNAP FIT SECONDARY TERMINAL COVERS

TRANSFORMER WIDTH 48.5mm

MAX CONDUCTOR SIZE 22.5mm DIA

PRIMARY RANGES FROM 100AMPS TO 600AMPS

1AMP OR 5AMP SECONDARIES

ASR22.3 Features


DIN RAIL MOUNTED OR FOOT MOUNTED

SNAP FIT SECONDARY TERMINAL COVERS

TRANSFORMER WIDTH 60mm

MAX CONDUCTOR SIZE 22.5mm DIA

PRIMARY RANGES FROM 40AMPS TO 600AMPS

1AMP OR 5AMP SECONDARIES

5 digit microprocessor meter with relay outputs, analogue signal output, RS485

Din 96x48mm 5 digit digital panel meters, available with a wide choice of both DC and AC inputs, along with many process inputs. The meter can be specified with a choice of one of three outputs, one relay (non adjustable from the front) can be specified as latched or non latched, an isolated analogue output or RS485 MODBUS RTU. The meter utilises the latest microprocessor technology in both the setting and operation of the meter.

DC Ampere hour meter with relay outputs, analogue output, RS485

A Din 96x48mm DC Ampere Hour meter, taking a current reference from a DC shunt and integrating this reference against time to achieve an Ampere Hour or Ampere Minute reading. There are two display screens, the main ten digit screen is the totaliser display, the other screen is a "Batch" programmable setting. The meter can be specified with up to four relay outputs (2C/O and 2N/O) which can be assigned at the time of ordering for many functions to control say an electroplating system. As an option RS485 MODBUS is also available. Three volt free control inputs are featured as standard for functions such as reset.

Din 48x24 digital microprocessor meter with relay outputs, analogue signal output, RS485

Miniature Din 48x24mm 5 digit panel meters, available with a wide choice of DC analogue voltage and current signal inputs, along with potentiometer and resistance inputs. These meters can be specified with one or two relay outputs, plus if required an analogue output or RS485 MODBUS RTU. An excitation supply of 24VDC max 30mA is featured as standard on the CS3-PR version. These meters utilise the latest microprocessor technology in both the setting and operation of the meter.

3� Digit panel meter


Measuring DCA, DCV, ACA, ACV, Hz

Accuracy DC: �0.1%, AC: �0.2%

3� Digital display : 1999

Peak Hold function (option)

Easy to wire, screw type terminal

DIN standard 96x48mm

High stability & low cost

4� Digit panel meter


Measuring DCA, DCV, ACA, ACV, Hz

Accuracy DC: �0.04%, AC: �0.1%

4� Digital display: 19999

Easy to wire, screw type terminal

1/8 DIN standard (96x48mm)

High stability & low cost

Din 48x24mm 3� digit panel meter


Measuring DCA, DCV, ACA, ACV, Temperature

Accuracy �0.1% DC: �0.25% AC

0.2% (Pt100): �1% (K, J Thermocouple)

3� Digital display : 1999

1/32 DIN (48 x 24mm)

High stability & low cost

3� Digit process meter


Measuring Process Signals; mA, Vdc,

Potentiometer, Pulse/u.

Accuracy �0.1%

3� Digital display : 1999

Easy to wire, screw type terminal

1/8 DIN standard (96 x 48mm)

High stability & low cost

4� Digit process meter


Measuring Process Signals mA, Vdc,

Potentiometer, Pulse/u.

Accuracy �0.04%

4� Digital display: 19999

Easy to wire, screw type terminal

1/8 DIN standard (96 x 48mm)

High stability & low cost

Relay output trip meters 4 digit type (9999)

A Din 96x48mm digital panel meter available in a 4 digit option with either one or two relay setpoint outputs. If one output is ordered this can be designated as a Low or High output in the ordering and in the case of two relay outputs Low/Low, High/High, High/Low. Also an extra output is provided as a Go output. This meter combines the traditional but popular user friendly front panel thumbwheel type push button switches to set the setpoints with the latest microprocessor technology.

Relay output trip meter 4� digit type (19999)

A Din 96x48mm digital panel meter available in a 4� digit option with either one or two relay setpoint outputs. If one output is ordered this can be designated as a Low or High output in the ordering and in the case of two relay outputs Low/Low, High/High, High/Low. Also an extra output is provided as a Go output. This meter combines the traditional but popular user friendly front panel thumbwheel type push button switches to set the setpoints with the latest microprocessor technology.

Relay output trip meters 5 digit type (99999)

A Din 96x48mm digital panel meter available in a 5 digit option with either one or two relay setpoint outputs. If one output is ordered this can be designated as a Low or High output in the ordering and in the case of two relay outputs Low/Low, High/High, High/Low. Also an extra output is provided as a Go output. This meter combines the traditional but popular user friendly front panel thumbwheel type push button switches to set the setpoints with the latest microprocessor technology.

3� Digit temperature meter


Measuring T/C: K,J,T,E,R RTD: PT100

Accuracy �0.2% (T/C) �0.1% (PT100)

3� Digital display : 1999

Easy to wire, screw type terminal

DIN standard (96x48mm)

High stability & low cost

3� Digit six channel temperature meter


Measuring T/C: K,J,T,E,R RTD: PT100

Accuracy T/C:�0.25%, RTD:�0.1%

3� Digit display : 1999

Easy to wire, screw type terminal

DIN standard (96x48mm)

High stability & low cost

A Din 96mm digital KWh meter with a pulse output for interfacing with BMS systems. The CUBE 300 is suitable for single phase and three phase loads, both 3 wire and 4 wire balanced or unbalanced. The meter is designed to measure accurately all types of loads inductive or resistive and electronically controlled loads. The CUBE 300 benifits from fully isolated current inputs and to aid commissioning the meter can also display instantaneous KW for 60 seconds before reverting back to KWh. A high speed internal RS485 MODBUS communications option allows all readings to be given remotely. Also available is a Dual Tariff option giving two registers, tariff changeover is effected by an external input signal.

NOTE: the CUBE 300 is available in standard execution ie, 400/415V L-L and 230VAC aux supply with 5Amp CT inputs. Non standard input voltages such as 110V L-L and 1Amp CT inputs are only available for large quantities. For smaller quantities please use the KWH CUBE.

A Din 96mm digital electronic multifunction energy meter with dual pulse outputs as standard for interfacing with BMS systems. The CUBE 350 is equally suitable for single phase and three phase loads, both 3 wire or 4 wire balanced or unbalanced. The meter is designed to measure accurately all types of loads inductive or resistive and electronically controlled loads. The CUBE 350 benefits from fully isolated current inputs and to aid commissioning the meter also has fitted three "phase indicator lights" on the front of the meter. A high speed internal RS485 MODBUS communications option allows all displayed information plus additional information (see specifications below) to be read remotely. Also available is a Harmonics option, this information is obtained via the RS485 MODBUS.

NOTE, the CUBE 350 is available in standard executions ie, 400/415V L-L and 230VAC aux supply with 5Amp CT inputs. Non standard input voltages such as 100V L-L and 1Amp CT inputs are only available for large quantities. For smaller quantities please use the MULTICUBE range.

A Din 96mm digital three line backlit display electronic multifunction energy meter with dual pulse outputs as standard for interfacing with BMS systems. The CUBE 400 is equally suitable for single phase and three phase loads, both 3 wire or 4 wire balanced or unbalanced. The meter is designed to measure accurately all types of loads inductive or resistive and electronically controlled loads. As standard the meter also reads KWh, KVAh, KVArh as import and KWh & kVArh as export. The CUBE 400 benefits from fully isolated current inputs. A high speed internal R8485 MODBUS communications option allows all displayed information to be read remotely. Also available is a Harmonics option this is available both on the standard meter or with the RS485 MODBUS option.

NOTE: the CUBE 400 is available in standard executions ie, 400 / 415V L-L and 230VAC aux supply with 5Amp CT inputs. Non standard input voltages such as 110V L-L and 110VAC auxiliary supplies, plus 1Amp CT inputs are only available for large quantities. For smaller quantities please use the MULTICUBE range.

NORTONICS MOVING COIL DC AMMETERS
Types: D48MC, D72MC, D96MC

Accuracy: Class 1.5

Burden: 80mV to 150mV volt drop depending on input current

Ranges: Any input between 50 to 800uA and 1 to 800mA
Also 1/1.5/2/2.5/4/5/6/10/15/20/25/30/40/50A
Dedicated 4-20mA version (D48MC only up to 30A)

Scales: Special scales made as required

TYPE A

Primary current 10 Amps to 200 Amps
TYPE B

Primary current 200 Amps to 600 Amps
TYPE C

Primary current 800 Amps to 2000 Amps
TYPE D

Primary current 3000 Amps to 5000 Amps
ALL TYPES

Standard accuracy �-1% (0.5% & 0.25% on request)

Specify with model the secondary: 50mV, 60mV 75mV, 100mV

Features


Din Rail Mounting

Suitable for Consumer Unit Mounting

3 Phase & 1 Phase Versions

Direct Connected no CTs Required

Most Units with Pulse Output

NORTONICS FREQUENCY METERS
Types: D48HZ, D72HZ, D96HZ
Accuracy: Class 1
Burden: 6mA
Ranges: 45-55Hz, 45-65Hz, 55-65Hz, 360-440Hz
(45-65Hz standard range) Supply voltage
must also be specified 110/240/380/415/440V

A Din 96mm digital KWh meter with pulse output for interfacing with BMS systems. One unit suitable for both single phase and three phase 3 wire or 4 wire loads, balanced or un-balanced. The meter benefits from fully isolated current inputs and to aid commissioning instantaneous KW can be displayed to confirm the load to be measured. The meter not only being in the popular Din 96mm size is only 71mm deep. Utilising the latest backlit display technology affords excellent viewing visibility.

A Din 96mm KWh meter that is designed to compliment standard panel instruments. Available in both single phase, three phase balanced or unbalanced, 3 wire or 4 wire configuration. Also available is a DC KWh meter option, meter type EL96GT. All meters can be supplied with or without volt free relay pulse output, standard pulse rate 1 pulse per KWh (other pulse rates upon request). Front panel LED flashes every 0.1KWh. The counter is a 7 digit mechanical non resettable type.

MID stands for �Measuring Instruments Directive" and is a new European Union directive to create a single market for measuring instruments across the EU and was effective from the 30th October 2006. The aim of the directive is to guarantee to users a standard European level of safety, reliability, tamper proofing and accuracy to instruments. For when meters are subjected to certain minimum specified levels of climatic conditions, mechanical environments and electromagnetic interference. "MID" is a replacement for the old UK "OFGEM" approval, also referred to sometimes as "OFFER" approval. It is advised that all electricity meters must be approved if used in a billing situation. This is a requirement of Schedule 7 of the Electricity Act 1989. Prior to the 30th October 2006 approval would have been granted by OFGEM. However, meters approved under previous UK provisions need not be certified in exempt situations. Usually landlord/tenant contracts, so long as a written agreement exists between the parties to dispense with the certification requirements. But any meter must still be of an approved design and be maintained in good working order. The new MID directive refers to ten categories of measuring instruments of which four relate to utility meters. In particular KWh meters fall within MI-003 ACTIVE ELECTRICAL ENERGY METERS.

4� Digit power meter with relay outputs, analogue signal output, RS485

Din 96x48mm digital single parameter power meters either as Watts, VAR or Power Factor. The meters can be specified for both single and three phase systems, 3 or 4 wire and are suitable for both balanced and unbalanced loads. The meters can be specified as a "display only" meter, or with a choice of one or two outputs. One relay or two relays that can be specified as latched or non latched, or an isolated analogue output with or without one relay output. Or with, or without RS485 MODBUS RTU which can also be with or without one relay output. The meter utilises the latest microprocessor technology in both the setting and operation of the meter.

4� Digit power meter with relay outputs, analogue signal output, RS485

Din 96x48mm digital single parameter power meters either as Watts, VAR or Power Factor. The meters can be specified for both single and three phase systems, 3 or 4 wire and are suitable for both balanced and unbalanced loads. The meters can be specified as a "display only" meter, or with a choice of one or two outputs. One relay or two relays that can be specified as latched or non latched, or an isolated analogue output with or without one relay output. Or with, or without RS485 MODBUS RTU which can also be with or without one relay output. The meter utilises the latest microprocessor technology in both the setting and operation of the meter.

A DIN 96mm x 96mm LCD multi display meter and only 71mm deep
available in six different permutations.


Features
� One Meter Measures ALL your values. Economically replaces Ammeters, Voltmeters, Switches, PF & kW Indicators, kWh Meters etc.
� Easy to See. Clear Backlit LCD Display with a Very Wide Viewing Angle
� Easy to Use. Four Keys select all parameters
� Safe to Use. Fully Isolated Current Inputs for Complete User & Installation Safety - Complies with the Low Voltage Directive (LVD)
� Small in Size yet great in Performance. Needs Only 71mm behind the panel - Measures every single cycle up to the 20th Harmonic
� Simple to Install. Software Detection/Correction of Wiring Errors

4� Digit power meter with relay outputs, analogue signal output, RS485

Din 96x48mm digital single parameter power meters either as Watts, VAR or Power Factor. The meters can be specified for both single and three phase systems, 3 or 4 wire and are suitable for both balanced and unbalanced loads. The meters can be specified as a "display only" meter, or with a choice of one or two outputs. One relay or two relays that can be specified as latched or non latched, or an isolated analogue output with or without one relay output. Or with, or without RS485 MODBUS RTU which can also be with or without one relay output. The meter utilises the latest microprocessor technology in both the setting and operation of the meter.

Look at this for a great idea, do you ultimately need an analogue signal for your current measurement ? Many of the CTs feature a plug in transducer module option.

Just twist of the secondary terminal covers and remove the secondary terminal screws. Screw in the brass transformer to module connecting studs and plug in the NMC module.

Each NMC transducer block will give two different isolated analogue outputs. Also the secondary of the current transformer is repeated, if this repeat facility is not required the supplied shorting link must be left in situ. It is possible to generate 0-20mA and 0-10VDC without any auxiliary supply (self powered module version). Please note that the self powered versions can only be used on current transformers with an output of at least 2.5VA, if a 4-20mA signal is required in all cases an auxiliary supply is required, 24VDC, 110VAC or 230VAC.

Look at this for a great idea, do you ultimately need a relay contact output for your current measurement? Many of the CTs feature a plug in relay module option.

Just twist of the secondary terminal covers and remove the secondary terminal screws. Screw in the brass transformer to module connecting studs and plug in the OCR module.

The OCR modules provide two volt free contact outputs rated at 5Amps 1N/C and 1N/O, connected to an adjustable time delay to avoid nuisance tripping. The OCR modules always require an auxiliary supply, 24VAC is also possible with the OCR module.

Phase Sequence Indicators

Nortonics Phase Sequence Indicators (P.S.I.) are suitable for a range of applications to indicate both the presence of all three phases and the correct sequence of those phases.

Incorrect phase connection will often cause serious damage to the motors of compressors, pumps, gen-sets, heating and ventilation equipment. Mobile generators, remote installations and shore to ship supplies are most vulnerable to such hazzards and are, therefore, ideal applications for Nortonics range of P.S.I.

The absence of a phase is indicated by and a neon and the missing phase is identified. The presence of all three phases in the correct sequence is indicated by the white neon. Incorrect phase sequence is indicated by a red neon.

NORTONICS POWER FACTOR METER
Type: D96PF (Self contained)
Accuracy: Class 1.5
Burden: Current inputs 0.5VA, voltage inputs 2VA
Inputs: Current via 1Amp or 5Amp CT input
Voltage direct 63VAC to 500VAC
System: 3P3W Balanced
Range: CAP 0.5 to 1 to IND 0.5

A Din rail mounted digital electronic multifunction energy meter with dual pulse outputs as standard for interfacing with BMS systems, the meter also is suitable for consumer unit mounting. The POWER RAIL 350 is equally suitable for single phase and three phase loads, both 3 wire or 4 wire balanced or unbalanced. The meter is designed to measure accurately all types of loads inductive or resistive and electronically controlled loads. The POWER RAIL 350 benefits from fully isolated current inputs. A high speed internal RS485 MODBUS communications option allows all displayed information plus additional information to be read remotely. Also available is a Harmonics option this information is obtained via the RS485 MODBUS.

The Power Rail 303 is a single function electronic kWh meter. Standard current transformer inputs (CTs) allow connection to loads of a few watts to hundreds of megawatts. Accurate measurements of kWh provide repeatable results required by energy management schemes.

Designed for ease of installation, the Power Rail 303 has quality rising cage terminals which allow repeated use and secure termination of a wide range of cable types and sizes. An isolated pulse output is available in the form of a volt free contact pair (relay switch). The contacts close for 100msec each time the LCD kWh counter increments. This output is suitable for direct connection to Building Energy Management Systems (BEMS).

A high speed internal RS485 MODBUS communications option allows all readings to be read remotely. Also available is a KW Maximum Demand option, available with or without the MODBUS option.

TYPE A

Primary current 10 Amps to 200 Amps
TYPE B

Primary current 200 Amps to 600 Amps
TYPE C

Primary current 800 Amps to 2000 Amps
TYPE D

Primary current 3000 Amps to 5000 Amps
ALL TYPES

Standard accuracy �-1% (0.5% & 0.25% on request)

Specify with model the secondary: 50mV, 60mV 75mV, 100mV

Summation current transformers enable the summation of several independant loads on different supplies.

An example three 3 phase supplies to be read by one KWh meter.
Supply 1: 200Amps, Supply 2: 800Amps, supply 3: 1000Amps
Required for each supply are three main CTs of the above primary currents, one for each phase R/Y/B. Also required will be three, 3 input summation CTs, each of the summation CTs must be designated to a phase. The secondaries from the Red phase main CTs should be fed to the inputs of the Red phase summation CT, likewise the same applies for Yellow and Blue phases. The secondary output from the summation CT will then equal the sum of the 3 primary currents:- 200/5 + 800/5 + 1000/5 = 2000/5. The meter being used must therefore be calibrated for 2000/5.
The above example of summation CTs have unbalanced ratio inputs and therefore have to be manufactured to order. Balanced ratio input summation CTs are usually ex-stock.
Summation CTs can also be used for subtraction purposes by reversing the polariry of the inputs. It is also possible to summate a mixture of single phase and three phase supplies.

DC Multi display power meter with relay outputs, analogue signal output, RS485

A Din 96x48mm multi display DC power meter. Measuring, displaying and communicating DC voltage, current, instantaneous power (Watts/KW), import and export Wh/KWh along with hours run. The voltage, current and power parameters also have max and min value recording during power on. The meter has the possibility for specifying up to 4 relay outputs including pulse outputs. The relays can be determined as set points for any of the parameters either low or high. In addition an analogue output also can be requested which can be assigned to any of the instantaneous measured parameters. Lastly, along with all the above mentioned outputs, RS485 MODBUS RTU communications can also be specified.

The VAW meter is particularly suitable for solar energy and wind energy systems, along with electroplating, battery and transport applications. A particular feature of this meter which is especially relevant in "green energy" applications, is that after a certain time of no operator interaction with the meter, the meter enters a "switch down" mode and reduces the power to the LEDs, thus saving money.

NORTONICS MOVING IRON AC VOLTMETERS
Types: D48SD, D72SD, D96SD
Accuracy: Class 1.5
Burden : Max 6VA
Ranges: 150/300/600VAC

NORTONICS WATTMETERS
Type: D96WA (Self contained)
Accuracy: Class 1.5
Burden: Current inputs 0.5VA, voltage inputs 2VA
Inputs: Current via 1Amp or 5Amp CT input
Voltage direct 63VAC to 500VAC
Systems: Single phase
3P3W Balanced - 3P4W Balanced - 3P3W Unbalanced - 3P4W Unbalanced

WSK40 Features


DIN RAIL MOUNTED OR FOOT MOUNTED

SNAP FIT TERMINAL COVERS

TRANSFORMER WIDTH 70mm

PRIMARY RANGES FROM 1AMP TO 40AMPS

1AMP OR 5AMP SECONDARIES