T H E U N I N T E R R U P T I B L E P O W E R P R O V I D E R

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SineWave - Installation rules

T H E U N I N T E R R U P T I B L E P O W E R P R O V I D E R

Site audit

A site audit is important in that it helps avoid technical and commercial problems in subsequent phases.

The major points dealt with: - identification of needs (remember, not all problems are related to harmonics) - definition of goals with the customer - measurement of harmonics in the installation (if possible) - preparation of a single-line diagram (sources, protection, loads, cable lengths, etc.) - selection of SineWave installation points - floorspace and volume available for installation - installation of protection circuit breakers, taking into account discrimination with

upstream circuit breakers - installation of sensors in the switchboards, taking into account the need to de-energise - evacuation of heat losses - zones sensitive to noise and vibrations

T H E U N I N T E R R U P T I B L E P O W E R P R O V I D E R

Installation constraints

sinewave

Temperature of incoming air must be < 40°C 25°C advised because service life as temperature

Heatsource

No heat sources under the unit (windings, transformers, power resistors, etc.)

Provide a clearance of at least 300 mm for air input Provide sufficient space for maintenance

Provide at least 300 mm for evacuation of hot air

No adjacent heat sources

T H E U N I N T E R R U P T I B L E P O W E R P R O V I D E R

Installation constraints

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sinewave

Do not install two SineWave units one above the other on a wall (the top unit will draw hot air produced by the bottom unit)

T H E U N I N T E R R U P T I B L E P O W E R P R O V I D E R

Installation constraints in a cabinet

Install a deflector between the two units (standard option)

Do not use a cabinet rated IPx1x or IPx2x (plain roof) Allow for the free flow of hot air (vented roof)

Provide sufficient air input for cooling (> 2000 m3 / hr) Provide sufficient space for maintenance

T H E U N I N T E R R U P T I B L E P O W E R P R O V I D E R

Environmental constraints

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Do not install SineWave in locations where noise can be a problem (public premises, offices, etc.)

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Do not install SineWave in a closed space (unventilated technical duct, false ceilings, etc.)

T H E U N I N T E R R U P T I B L E P O W E R P R O V I D E R

Environmental constraints (cont.)

sinewave

Do not install SineWave in areas with conducting or aggressive dust (e.g. containing hydrocarbons) such as parking lots, road tunnels, etc.)

Do not install SineWave in rooms with high levels of dust (SineWave degree of protection is IP305, protected against particles > 2.5 mm)

Periodically clean the ventilation grates (depending on the level of dust)

T H E U N I N T E R R U P T I B L E P O W E R P R O V I D E R

Installation of the sensors

The sensors must always be installed downstream of the SineWave connection point

The sensors must be correctly installed (see the manual)

The wires of each sensor must be twisted and marked

Do not connect the secondary windings to the exposed conductive parts ( S2 connected to 0V and the neutral)

Sensor wires must not run next to power conductors

! Install a device to short-circuit the current sensors (replacement of a unit or board)

Sensors can be supplied and installed before the SineWave units (short-circuitable terminal block is indispensable)

Up to three sets of identical sensors can be installed in parallel to eliminate harmonics on circuits

! Contact us for information on selecting the rating

sin ew a ve

CB2

CB1

P1

P2 TERMINAL BLOCK

T H E U N I N T E R R U P T I B L E P O W E R P R O V I D E R

Sensor selection

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CB2

CB1

P1

P2 TERMINAL BLOCK

! System performance is guaranteed on the condition that the sensors supplied with the SineWave are used

SineWave is normally supplied with MGE split toroids (600/1 rating)

MGE split toroids rated 2000/1 are also available as an option

The other recommended ratings are available in closed toroids

The sensor rating depends on the rms value and the peak value of the load currents requiring processing

! Always use the rating indicated in the selection table or the next highest rating

T H E U N I N T E R R U P T I B L E P O W E R P R O V I D E R

Short-circuit protection

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CB1

CB2

Selection of protection devices depends on local standards (breaking capacity, system earthing arrangement, neutral protection and interruption, etc.)

! Computer loads, I_neutral <= 3 x I_phase

A discrimination study is required (CB2 must open before CB1)

If discrimination is not ensured, select a lower SineWave rating (parallel connection) or install a faster protection system (ultra fast fuses)

! 90 A and 120 A SineWave units are protected by two circuit- breakers (one per 45 A or 60 A power module)

T H E U N I N T E R R U P T I B L E P O W E R P R O V I D E R

SineWave + passive-filter combination

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Source

Ls

Loads

Lf

Cf

Install the current sensors downstream of the passive filter tuned to H5

Do not condition H5

T H E U N I N T E R R U P T I B L E P O W E R P R O V I D E R

Neutral connection

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Source

Ls

Loads3Ph + N

3Ph + N

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Source

Ls

Loads3Ph

3Ph

Connect the neutral to SineWaveand set SineWave to "neutral distributed" if this is the case, whatever the type of load conditioned (computers, variable-speed drives, etc.)

Set to "neutral not distributed" if the neutral is not distributed. ! An inductor must be installed in the unit (option) to recreate an artificial neutral

T H E U N I N T E R R U P T I B L E P O W E R P R O V I D E R

Capacitors for power-factor correction

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Source

Ls

Loads3Ph

3Ph

C C

Power-factor correction capacitors must always be connected upstream of the SineWave connection point

T H E U N I N T E R R U P T I B L E P O W E R P R O V I D E R

Special loads

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Source

LsC om pensa ted

ligh ting Do not condition lighting with a compensated ballast (very capacitive load, risk of resonance with Ls)

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Source

LsD im m er w /o

sm ooth ing inducto r Do not condition variable-speed drives without a smoothing inductor (unstable load). Addition of an inductor reduces harmonic pollution by half

T H E U N I N T E R R U P T I B L E P O W E R P R O V I D E R

Setup

Except in special cases, the band width should be reduced to a strict minimum. For most applications, it can be limited to H13 and even H9

Type 2 (for tests in the factory) must never be used (risk of serious malfunctions)

Except in special cases, filtering should not be used (+32, +64, +96)