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Hyperion Installation &
Maintenance Manual 2018
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Introduction
Plessey’s Hyperion 1750 LED Horticultural Grow light fixture is designed to provide plants with Photosynthetically
Active Radiation (PAR). This is achieved by supplementing or replacing natural daylight with an LED generated
light spectrum proven to enhance plant growth rates and yields. The product is suitable for large scale commercial
greenhouse, hydroponic and research installations and is 1:1 equivalent to a 1000W HPS grow light
The fixture is constructed from die cast aluminium with a corrosion proof white powder coating. The light engine
is made up of state of the art LEDs arranged to maximize output and uniformity. With externally mounted driver
and easily removable fan the fixture has been designed to last and is backed up with a 5 year/25k hour warranty.
Specification Summary
Notes: @ 400V AC Input Voltage (1)
@ 25°C Ambient (2)
Based on standard bracket specification. Alternative designs will vary (3)
The values in the table above are provided as typical values, and not a performance claim specific to any individual product. Performance will be dependent on
spectrum and customer specific options.
Photosynthetic Photon Flux and connected electrical load are subject to tolerance of +/- 10%. For the purposes of this document Photosynthetic Photon Flux is
measured between 380nm – 780nm with each wavelength weighted equally.
The Hyperion 1750 has been tested by an accredited independent laboratory to LM-79-08, (BS) EN 13032-4:2015 and CIE S025:2015 test standards. Information
can be supplied upon request.
Safety
The Hyperion fixture does not radiate harmful wavelengths of light but like many high power artificial lights, users
should not look directly at the fixture whilst the light is on.
Care must be taken when assembling, fitting or handling to prevent personal injury or damage to the product.
This light fitting must be installed by a competent person in accordance with the local Building and Electrical
Regulations.
Plessey cannot accept any liability for loss, damage or premature failure resulting from inappropriate use. Plessey
can advise on installation requirements including how to achieve the desired amount of light and uniformity.
Should the fan fail or the fixtures ability to actively cool be inhibited the LED Printed Circuit Board (PCB) will run
hotter. This increase in temperature is registered and fed back to the driver. Upon hitting a certain safety
threshold the driver will reduce the power to the PCB. This causes a noticeable drop in light output to approx.
1000umol/s depending on spectrum and protects the fixture from overheating. The driver has a built-in thermal
protection so should it overheat the power will be cut.
Value Data
Input Voltage
200 –
480V AC@ 50/60 Hz
Input Current
1.7 Amps
(1)
Power
Consumption
600 - 700W
Power Factor
>0.95
Inrush current
(Startup)
40A (twidth=1100µS measured @ 50% Ipeak)
Wavelength Range
450 nm to 730 nm
Working Temperature
0° to 35°C
Fixture Temperature
50⁰C
(2)
PPF + NIR
1600-1800 µmol/s
Efficacy
2.4 –
2.9 µ
mol/j
Warranty
Up to 5 years/25000 hrs
Fixture Weight
18.9
5kg
(
(3)
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Fixture Components
1. Hyperion fixture/lamp
2. User replaceable driver assembly mounted on mounting hook
3. Fixture bracket arm with mounting hook
4. User replaceable IP68 rated fan with power cable
5. Main supply input cable with green or black male Wieland plug. Power supply cables need to be fitted with
matching Wieland female plug (green or black).
6. Driver output power and control cables. Control cables allow feedback to monitor fan status and dim driver to
1000 μmol/s if fan fails
7. Driver earth harness
Light Spectrum / Intensity
The Hyperion comes with a set of standard Spectrums which cover most commercial greenhouse applications.
Plessey will provide Agronomy support to ensure the optimum spectrum is selected for any given crop. Plessey
can also provide customised spectrums for volume orders should this be required.
The intensity of light received by the crop is very important in achieving optimum growth. The number of lights
and their distance from the crop will affect this significantly. Plessey’s agronomy & engineering support will
recommend an intensity level based on the client’s crop and growing environment.
High Red Spectrum
High Red + White
High Red + High White
LED Colour
Wavelength
%
LED Colour
Wavelength
%
LED Colour
Wavelength
%
Far Red
730nm
2
Far Red
730nm
2
Far Red
730nm
4
Red 660nm
96 Red 660nm
91
Red 660nm
84
Blue 460nm
2
Blue 460nm
2
Blue 460nm
2
White
4000K
5
White
4000K
10
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Dimensions
Below image of standard fixture including primary bracket. It is important clients provide relevant safety
information on equipment and material within close proximity to the installed fixtures. Energy, light and other
greenhouse screens could affect the safe mounting height of the fixture so its important brackets allows for this
in its design.
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Mounting Position / Uniformity
Plessey has adopted a similar approach to conventional HPS light fixtures with the fixture being designed to work
well from existing greenhouse structures like Trellis sections. Choosing to fit Hyperion fixtures to trellis offers
significant advantages by reducing shading, reducing install costs and providing containment for wiring. The
dimensions of a client’s greenhouse and in particular bays contained within it will affect the uniformity. Hyperion
can also be mounted to C Profile or other metal work which provides growers greater flexibility.
The Hyperion product range contains LEDs with a wide 120 degree beam angle (FWHM) which works very well at
distributing light over large areas. Based on the determination of Spectrum / Intensity and preferred mounting
position Plessey will create a lighting simulation which will determine the number and position of the fixtures.
As an option, Hyperion can be fitted with a reflector on any of the 4 sides of the unit.
The reflector can be attached to units at the edges of an installation to reflect the light back into the main lit area,
avoiding light spilling outside the glasshouse or into a different compartment/area. This helps maintain light
uniformity over the whole lit area
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Mechanical Considerations
Once the position and quantity of the fixtures has been decided the client must check with greenhouse installers
and engineers that the integrity of the structure can withstand the overall and point load brought to bear by the
installation of the fixtures.
A suitable means should be chosen to mount the fixture. Below are illustrations of common mounting methods
Plessey has provided to its customers. These can be adjusted and modified to meet customer requirements.
Consideration should be given to existing or planned glasshouse infrastructure like light and energy screens,
watering systems and automation equipment.
Fig.1 – Hook Configuration
Fig. 2 Bolt through Configuration
Fig.3 – Customised Strap Configuration
Fig. 4 Third Party Bracket configuration
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Electrical Connection Considerations
The Hyperion grow light is supplied with an external driver which is mounted on the hanging bracket supplied with
the fixture. The fixture has been optimized to run on a two phase input from a 3 phase 400V supply. However, the
product can operate within a wide range of supply voltages. Ask for more details.
The fixture is prewired with a Wieland male connector for attaching to
the greenhouse lighting supply wiring as per the customers requirement.
See image opposite.
For new Installations Plessey recommends the Wieland (Green) 96.032.4055.7
However, for HPS replacement a Wieland (Black) 96.032.4053.1 may be
more suitable.
The greenhouse lighting supply wiring should be terminated with the
corresponding connector which is Wieland RST20i3 400v 3 pole female connector
(green) to plug into the driver Wieland part no. 96.031.4055.7 or 96.031.4053.1 if
using the Wieland (Black) connector system. See image opposite. The position of
the female connector should be in close proximity to the position of the fixture and
provide adequate strain relief / support for the fixture wiring.
For new build large installations, it is recommended that a pluggable wiring system is preinstalled. Pre-made lengths of power cable with a female connector are available.
Wieland part number 96.232.1035.7 through to 96.232.8035.7 (8x variants from 1m to
8m) See image opposite for an example of a pre-made cable.
Plessey can assist installers with cabling determinations and supply requirements.
Important Information
The Ingress Protection of any termination performed by the client must preserve the ingress protection of the
fixture in order to maintain product warranty.
It is important in large installations that the pairs of phases are swapped and evenly distributed throughout the
installation to avoid overloading one phase of the supply.
Once installed, free from all packaging materials and connected to the fixed wring system the product can be
switched on with no further commissioning.
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Electrical Design Considerations
Running Current = Input Power / Supply Voltage
For example if supply voltage is 400V
684 / 400 = 1.71A
A corrective device and supply cable should be chosen by applying
It > In > Ib
Where,
It = Cable current carrying capacity, In = Protective device rating, Ib = Circuit design current
Hyperion’s are supplied with a state of the art Power Supply referred to as a driver. The primary job of the driver
is to convert the high voltage ac supply into a lower voltage dc supply suitable for the Light Emitting Diode’s
(LED’s). It is important that it does this efficiently so the driver has circuitry which corrects power factor. The
consequence of this power factor correction is that the fixture has substantial capacitance which causes a very
short but significant inrush current on start up. This can be up to 40A for 1100 μS measured at 50% of peak. See
below.
Hyperion Inrush current waveform
It is important therefore when determining which circuit breaker to use that it is suitable for the number of
fixtures it is going to protect.
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The following example is representative of a typical electrical lighting circuit for a greenhouse. In this example
the chosen circuit protection is a three phase MCB 20A Type C from Schneider Electric.
The circuit has 15 fixtures wired across 3 phases as detailed below
Example final circuit design
In this configuration one 3 phase MCB is protecting 3 circuits so we can treat the inrush problem as 5 fixtures per
phase.
However, we need to work out (Ib) per phase
Ib per phase = Fixture x Current per Fixture
∛
Ib = 15 x 1.71
∛
In per Phase = 14.8A
Therefore, a 20A MCB is suitable to protect the design load. Providing the cable has suitable current carrying
capacity.
Manufacturers for protective devices provide documents relating to tripping curves under IEC/EN 60898-1 and
IEC/EN 60947-2 standards. However, due to the very brief nature of capacitive inrush currents these standard
curves do not provide sufficient detail about the magnetic portion of the trip.
Installers should request manufacturers provide tripping curves for high inrush currents that appear during the
first milliseconds of operation.
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The response of the 20A Schneider Electric MCB can be evaluated from the following graph.
MCB Manufacturers instantaneous response curve
The fixture has a potential inrush of 40A for 1100 μS therefore the circuit has a potential inrush of 5*40A = 200A
for 1100 μS per phase. It would suggest that a 20A 3 phase MCB with type C curve is capable of handling up to
19*40 = 760A in this time period.
This is an example and should not be treated as the rule. It is very important that installers check with circuit
protection manufacturers that the chosen circuit protection is suitable for their design.
It is also important that installers consider volt drop when determining loads on cables and cable size.
This is particularly important in greenhouse installations where the potential for circuits covering long distances
is common.
Hyperion drivers are capable of working with a wide range of voltages but installers should design to local
regulations and limits. IEC 60364 provides guidance and limits on volt drop provision.
Hyperion Drivers have been independently tested and comply with following Electromagnetic Compliance
legislation;
EMC Emissions Compliance to EN55015, EN61000-3-2 Class C (@ load≧50%); EN61000-3-3, FCC Part 15 class B
EMC Immunity Compliance to EN61000-4-2,3,4,5,6,8,11, EN61547, light industry level (surge immunity Line-Earth
8KV, Line-Line 4KV)
Note: The above steps are intended to provide guidance to installers but different installations in different regions may require alternative approaches. Plessey will
make every effort to assist in establishing a feasible design.
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Installation
The erection method for any Hyperion variant will ultimately depend on the bracket solution but the hanging
concepts are broadly the same. The fixtures arrive boxed / crated. It is recommended that the polythene bag is
kept on the fixture until the point of installation.
They should be removed from the crate and placed facing down on a smooth soft surface. Use the Polystyrene
insert provided to avoid collecting scratches and detritus on the lens. Each fixture should be inspected to check
for condition and shipping damage.
Due to the fixtures weight it is recommended that they are installed with the aid of powered access and work
platforms. Fixtures with brackets of the simplest form can simply be raised and hooked onto the trellis section. If
energy and light screens are an issue installers may need to use option 3 /4 which requires a first fix of the
secondary strap bracket. Then the fixture can be simply hooked onto it.
In all cases the input plug should then be connected to the supply wiring. Where possible it is recommended that
cables are not secured on the fixture side of the plug. This will help should the fixture need to come down or if
the driver needs changing in the future. All packaging materials must be removed before switching the units on.
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Maintenance
The Hyperion 1750 has been designed so that both the driver and fan are user replaceable.
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Hyperion has been designed to have its LED driver externally mounted. This has a number of benefits including
cooling, lifetime and allowing it to be user replaceable. Typical symptoms of driver failure include fixture not
turning on, fixtures turning on for a short while then turning off or fixtures flashing on and off.
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Other Failures
The design of the Hyperion LED Printed Circuit Board provides for an element of fault tolerance. If a single LED
were to fail the remaining LEDs will be able to operate normally with minimal impact on fixture output.
Several LEDs failing on a fixture would suggest the fixture is not operating correctly and should be turned off.
The PCB is not a user replaceable part. It is screwed to the heatsink and is protected with the glass cover and
surrounding bezel. This assembly forms the IP66 protection for the PCB. Entering this space would invalidate
customer warranty and could potentially damage the fixture further.
PCBs can be repaired or replaced by Plessey. Fixtures will need to be returned whole for this to be done. Contact
Plessey customer care for assistance.
Cleaning
It is very important that in order to maintain product performance and lifetime that the fixture is kept clean.
Plessey recommends lights are cleaned every 3 months depending on environment.
The fixtures can be hosed clean from ground level. The fixtures should not be running when doing this and they
should be allowed to drip dry before turning on again.
It is recommended fixtures should have a more thorough annual inspection and clean. Detritus should be
removed from the heatsink fins and fan cover. Lenses should be wiped clean to remove any ingrained dirt.
Greenhouses can be hot and humid environments. Pesticides, cleaners and fertilizers have the potential to
degrade the lifetime of the light fixture. Regular cleaning helps reduce the build-up of these materials and
maintain the manufactured corrosion protection.
When using harsh cleaning chemicals to disinfect the green house ensure the lights are protected and rinsed
clean afterwards.
Disposal
When the light fitting comes to the end of its life please do not dispose of it within the general waste, please
recycle where facilities exist. When you need to dispose of this fitting, check with your distributor or local
authority for suitable options. New regulations require the recycling of Waste from Electrical and Electronic
Equipment (European “WEEE Directive” effective August 2005—UK WEEE Regulations effective 2nd January
2007). Environment Agency Registered Producer: WEE/MM3672AA
.
Warranty
It is expected that the customer maintains the fixture during the warranty period by following the maintenance and
cleaning details within this document. Should a failure occur, Plessey will repair/replace the fixture promptly.
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Legal Notice
Product information provided by Plessey Semiconductors Limited (“Plessey”) in this document is believed to be
correct and accurate. Plessey reserves the right to change/correct the specifications and other data or
information relating to products without notice but Plessey accepts no liability for errors that may appear in this
document, howsoever occurring, or liability arising from the use or application of any information or data
provided herein. Neither the supply of such information, nor the purchase or use of products conveys any licence
or permission under patent, copyright, trademark or other intellectual property right of Plessey or third parties.
Products sold by Plessey are subject to its standard Terms and Conditions of Sale that are available on request.
No warranty is given that products do not infringe the intellectual property rights of third parties, and
furthermore, the use of products in certain ways or in combination with Plessey, or non-Plessey furnished
equipment’s/components may infringe intellectual property rights of Plessey.
The purpose of this document is to provide information only and it may not be used, applied or reproduced (in
whole or in part) for any purpose nor be taken as a representation relating to the products in question. No
warranty or guarantee express or implied is made concerning the capability, performance or suitability of any
product, and information concerning possible applications or methods of use is provided for guidance only and
not as a recommendation. The user is solely responsible for determining the performance and suitability of the
product in any application and checking that any specification or data it seeks to rely on has not been superseded.
Products are intended for normal commercial applications. For applications requiring unusual environmental
requirements, extended temperature range, or high reliability capability (e.g. military or medical application
s),
special processing/testing/conditions of sale may be available on application to Plessey.
Contact
Jonathan Barton
+44 (0) 7825 878003 | jonathan.barton@plesseysemi.com
www.plesseysemi.com/products/grow-lighting
Plessey Semiconductors Ltd | Plymouth
Tamerton Road, Roborough
Plymouth, Devon
PL6 7BQ
United Kingdom
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