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detuned reactors - product range (suite)
INSTALLATION
It will be responsibility of the installer to comply with the national and international installation standards
The reactors operate properly only under the specified conditions:
- Storage and transportation temperature : -25°C / +70 °C
- Selection of the right type according to harmonic pollution
- In operation an adequate air circulation has to be guaranteed
- Windings must be installed vertically for better heat dissipation
- The reactor must be protected against overloads and short-circuits by fuses and/or circuit breakers.
- Suitable protection against undesired contacts (IP00) must be provided by means of enclosures or boxes protecting the power system where
the reactor is installed
- It is imperative to that the thermal N.C dry contact be connected in series with the contactor coil, in order to disconnect the step in case of
overheating
- This range of detuned reactors can not be connected with standard capacitors. It must be connected with appropriate H type capacitors
selected by our service (see selection table)
Available upon request :
- Ambient temperature higher than 40°C
- Other voltages (example 220V, 440V) lower than 1000V
- Other frequencies (example 60Hz)
- Other blocking factor p% : 5.67% ( tuning frequency 215Hz) - 13.7% ( tuning frequency 135Hz)
TECHNICAL CHARACTERISTICS
DETUNED THREE-PHASE REACTORS 400V, 50 Hz
Standard Class designed for harmonic level 25% < SH/ST < 35%
Q
Capacitor part number
Ln
I RMS
Part Number
Ptot
12.5 VH12.540 2.85 21 SAH-2.85-21 100
25 VH2540 1.45 42 SAH-1.45-42 160
50 VH5040 0.72 83 SAH-0.72-83 230
75 VH7540 0.48 123 SAH-0.48-123 320
Reinforced Class designed for harmonic level 35% < SH/ST < 50%
Q
Capacitor part number
Ln
I RMS
Part Number
Ptot
20 VH2040 1.78 38 SAH-1.78-38 200
40 VH4040 0.9 75 SAH-0.9-75 280
80 VH8040 0.45 150 SAH-0.45-150 380
Nota: If the ratio SH/ST is between the 2 values given in the table then you must select the most restricting alternative
L
C
x 100)
It is related to the resonance frequency (fris) of the system by the formula:
fris = 50x
100
p%
Q : compensation reactive power (KVAr)
Ln : rated inductance, expressed in mH.
I
: current, expressed in A. It is given by the formula:
2
1
2
5
2
7
I RMS
= 1.075xI + I + I + ...
where I 5
is the rms value of the 5 th harmonic current, I 7
of the 7 th harmonic…
Ptot : total losses, including additional losses due to harmonics, expressed in W and referred to 75°C
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