Problem
/
Solution
Solar Photovoltaic (PV) technology has shown significant development in recent years and this has led to
many UK homeowners investing in Solar PV installations. Solar electricity is green, renewable energy and
which doesn't release any harmful pollutants. People want to reduce their carbon footprint and
reduce
their
gas and electricity bills, they can achieve this through Solar PV technology.
The problem
:
At the moment any surplus energy produced from the Solar PV system, people either sell back to the grid
(for shocking rates, so it’s barely worth it) or they use it around the house to try and decrease other utility
bills.
More and more people are getting Solar PV systems installed and instead of selling the extra energy back
to the grid, they use it to heat water and as a result
lower their gas bill. The surplus energy generated
from the solar panel is used by the immersion heater to heat the water.
Most households have been fitted with a 3kW immersion heater; it may not be possible for the Solar PV
system to generate that much
spare energy. 3kW is quite high and therefore may over load the spare
energy available.
Currently the only option for homeowners with high kW immersion heaters is to purchase a 1kW or 2kW
immersion heater and hire an electrician and plumber to remove and replace their existing one. However,
this can be very time consuming and very expensive and this is where homeowners may consider just
selling the surplus energy back to the grid.
The solution
:
Here at Amelec Instruments, we’ve designed and created an ECO
2Water Heating System. The package
includes an
ACT-200, an AGS1133 Intelligent Solar Switch and an APR-3 Power Reducer.
The ACT-200 is a sensor which provides the AGS1133 Trip Amplifier with an accurate
measurement of
the power generated from the solar panel.
The
AGS1133 Intelligent Solar Switch monitors the
household power; and recognises if the power is
being imported
or exported
. It then automatically switches ON the immersion heater only when enough
spare power is being exported. The intelligent switch will also recognise if there is a change in weather
conditions and/or other appliances are switched ON around the house, it will then turn off the immersion
heater, ensuring the water is only heated using the power generated by your PV system. The unit is fully
tested and ready setup,
so NO site programming or setting up, simply fit and forget
.
Through one of our APR-3 Power Reducer units, the immersion heater runs at halve the kW and gently
heats the water. So a 3kW immersion heater becomes 1.5kW and 2kW immersion heater becomes 1kW.
Over a day, you will get a full tank of hot water for free.
Our ECO
2Water Heating System allows homeowners to use surplus energy generated by the Solar PV
system to heat water for free. Over the period of a year, our system can
significantly reduce the gas
bill. All products are designed and manufactured in our factory in Milton Keynes, England. They are easy
to install and very cost effective.
About Us
Originally formed in February 1975, AMELEC remains a wholly owned British manufacturing company.
Over the past
35 years we have supplied a wide range of tried and tested signal conditioning equipment to many industries within
both the public and Private sectors and have gained in-depth understanding of product application. We therefore
know what works and what does not. Using this knowledge we are able to ensure the products we offer to our
customers are ‘fit for purpose’ and best value for money.
Our design, manufacturing and test facilities are all in Milton Keynes, England. We have well established and
trustworthy business relationships with sub-contractors, manufacturers and suppliers both here in the UK and
worldwide. Dependent upon our customers’ requirements, we are able to respond to their wants and needs quickly
and efficiently, ensuring the best return on their investment.
Our design & everyday application engineering principles used in the instruments are based on well-tried linear
operational amplifier circuitry, proven in use for over thirty years. Each instrument can be considered as a number of
functional blocks assembled together to produce a specific control function. By combining these functional blocks
together we have produced a comprehensive range of Trip Amplifiers, Transmitters, Signal Converters / Isolators,
Signal Splitters/Boosters, combined Trip Transmitters, Arithmetic (Add / Subtract / Select / Multiply / Divide) units,
Power Supplies, Strain Gauge, Frequency & AC I/V Transducers, Transformers as well as HART compatible units.
A wide range of these instruments have no time dependent or microprocessor circuitry and have been independently
accessed & verified for use in SIL 1, 2 or 3 (IEC61508) rated safety systems/loops.
Our facility in Milton Keynes operates in accordance with UKAS certified ISO 9001:2008 quality system. Any
outsourced production and services are from approved organisations holding ISO 9001:2008 Quality Management
certification. We have been awarded 100% score in quality accreditation by the Achilles-UVDB verify scheme.
Instrumentation manufactured by Amelec Instruments is covered by up to 10 year warranty.
To confirm that the instruments are compliant with the latest standards, AMELEC have submitted a range of
instruments with all the various circuit blocks in them to the test houses. The reference / standards used at the test
houses have been:- the CEGB’s EES1989, the BS6667, IEC801. We offer RFI Protection to the IEC61000-4-3
standard.
Our vast client base is spread across all process industry sectors; originally to the likes of the CEGB, BNFL, GEC,
British Gas, ICI, BP & Shell, today AMELEC continues to supply quality instrumentation to the Nuclear, Power
Generation, Rail, Oil & Gas, Chemical, Pharmaceutical, Petrochem, Utilities, Food & Brewery sectors, as well as to
many other general manufacturing industries & the Water Authorities throughout.
ACT-200
Split core CT for easy InstallationNon intrusive monitoring 1 year guarantee as standard CE compliant
Low clamped Isolated O/P - Connect directly to PLC Mounting - Clip
APPLICATION
Motor / Heating element current monitoring. AC current signal conditioning.
TECHNICAL SPECIFICATION INPUT
Current can be specified in the range of: 0 - 5A, 0 - 10A, 0 – 20A, 0 – 50A, 0 – 100A. Other intermediate ranges available on request.
Bandwidth: 30 to 400Hz nominal, other ranges available. OUTPUT
Current = 2000:1
Typical range 0 - 20A = 0 - 10mA Voltage = Any range can be specified up to 25Vac. Typical range 0 - 50A = 0 - 1Vac
Linearity: < ±1% Accuracy: < ±2%
Response time: Typically < 100mS Protection
Isolation 2500V RMS. Input / Output / Case Input over range up to 200% continuous. Enclosure: ABS (UL 94V-0) / IP20 ENVIROMENTAL CONDITION Storage temperature: - 10 to +70 ̊C Operating Ambient: -10 to +50 ̊C Relative Humidity: 20 to 95% RH Temp Coefficient: < 300ppm MOUNTING Mounting: Clip Weight < 100g Installation: CAT II Issue 1 2011
Issue 3
AGS1133 Intelligent Solar Switch
Single or Dual CT operation1 year guarantee as standard CE & RoHS compliant British Design & Manufacture TYPICAL APPLICATION
Solar / Wind Power TECHNICAL SPECIFICATION FUNCTION
Monitors the household power; recognises if
the power is being imported or Exported and only switches ON the immersion heater when enough spare power is being available from the solar system.
INPUT
From Amelec ACT-200 CT
(See datasheet for ACT-200 for further details). Frequency: 50Hz nominal, other ranges available. Calibration Range: 5 to 100% / Average RMS
. OUTPUT
1 x SPCO contacts, rated at 250VAC, 16A, 3000VA resistive.
(Relay Normally De-energised, Energised on trip) Fail safe.
CONTROLS
SP 1: 15 turn potentiometer to set spare capacity threshold point in the range of 0.1 to 5kW. Setpoint can be monitored on Test-SP1 with ref to Test-0V. using DVM. 0 - 1V represent 0 -5kW.
Important: When setting SP1 potentiometer, ensure the small phase LED is RED. (Default factory setting is 1.5kW).
INDICATOR
Power ON: 5MM LED, GREEN. Relay status: 5MM LED, Red = ON PHASE DETECTION
IMPORT = 3MM LED, GREEN EXPORT =3MM LED, RED PERFORMANCE
Accuracy: < 1%
Trip settability: better than ±1% Trip repeatability: better than ±1% Response time: Typically < 400mS Power consumption: <3VA MOUNTING AND FIXING
This product is designed to be fixed inside EUROPA - ECW06 Enclosure Dimension: 160W x 212H x 115D. Fixing Centre - 145mm PROTECTION Isolation 1000V RMS. Inputs/Contacts/Supply/Earth Internal Fuse.
Failsafe Relay loss of power Input over range up to typically 200%. ENVIROMENTAL CONDITION Storage temperature: - 40 to +70 ̊C Operating Ambient: -15 to +55 ̊C Relative Humidity: 5 to 95% RH
To reset latched trip manually, apply a short to
-SAFETY NOTE:
1. Potentially High dangerous voltages and therefore shall only be installed by qualified person.
2. Connect the equipment according to current IEE regulations and separate all Wiring according to IEC1010.
3. Make sure all screw terminals are tight before you switch the equipment on.
4. Don’t touch any circuitry after you have connected the equipment, because there may be lethal voltages on the circuit board or connector terminals
We designed this equipment for Pollution-Degree 2 environments only. This means you must install it in a clean, dry environment.
APR-3 Power Reducer
Power reducer (halve the power)Easy installation
1 year guarantee as standard CE & RoHS compliant British Design & Manufacture TYPICAL APPLICATION
Immersion Heater. TECHNICAL SPECIFICATION
Units is designed to halve the power. E.g. 3KW load reduced to 1.5KW.
INPUT 110 / 240Vac
May be suitable for other supply voltages up to 600Vac.
Frequency: 50Hz +/- 10% nominal, other ranges available.
OUTPUT LOAD
1 to 3 KW ( up to 13A max)
PROTECTION
Isolation between. LIVE / Case / Heat sink plate Input over range: 20A (non repetitive)
Enclosure: IP65
ENVIROMENTAL CONDITION Storage temperature: - 20 to +70 ̊C Operating Ambient: -20 to +70 ̊C Relative Humidity: 20 to 95% RH MOUNTING & DIMENSION Dimension : W44 x H90 x D24 (mm) Wire : 300mm Length rated 20A max.
Mounting hole centre: 66mm (2 x 4.2mm hole dia) Weight < 125g
Installation: CAT II
SAFETY NOTE:
1. Potentially High dangerous voltages and therefore shall only be installed by qualified person.
2. Before wiring to any power source, the unit should be fixed to surface and Earthed. 3. This product could run hot at 100% load and
therefore shall be fixed to a flat surface, inside a suitable metal enclosure to help dissipate the heat.
4. Live In from power supply shall be suitably fused to prevent prolonged over load current causing damage.
5. If the unit fails, it should cut power to the load. This unit is not repairable and therefore should be replaced.
WIRING
Connect the equipment according to current IEE regulations and separate all Wiring according to IEC1010.
