Line/Load Reactors
Detailed Product Data
HARMONIC REDUCTION
Because all standard Guard-AC reactors are compensated
for harmonics (current and frequency), they are
extremely effective at reducing the amount of harmonics
which are produced by a drive/inverter. Use 5% impedance,
harmonic compensated reactors for the best single stage reduction
of harmonic distortion. For the guaranteed harmonic mitigation see MTE Matrix Filters.
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Percent Harmonics vs Total Line Impedance
Total Input Impedance |
| Harmonic |
3% |
4% |
5% |
6% |
7% |
8% |
9% |
10% |
| 5th |
40 |
34 |
32 |
30 |
28 |
26 |
24 |
23 |
| 7th |
16 |
13 |
12 |
11 |
10 |
9 |
8.3 |
7.5 |
| 11th |
7.3 |
6.3 |
5.8 |
5.2 |
5 |
4.3 |
4.2 |
4 |
| 13th |
4.9 |
4.2 |
3.9 |
3.6 |
3.3 |
3.15 |
3 |
2.8 |
| 17th |
3 |
2.4 |
2.2 |
2.1 |
0.9 |
0.7 |
0.5 |
0.4 |
| 19th |
2.2 |
2 |
0.8 |
0.7 |
0.4 |
0.3 |
0.25 |
0.2 |
| %THID |
44.13 |
37.31 |
34.96 |
32.65 |
30.35 |
28.04 |
25.92 |
24.68 |
| TRMS |
1.09 |
1.07 |
1.06 |
1.05 |
1.05 |
1.04 |
1.03 |
1.03 |
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REACTOR LINEARITY
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This curve illustrates the linearity of Guard-AC reactors. Even at 150 percent of
their current rating, these reactors still have 100% of their nominal inductance.
This assures maximum filtering of distortion even in the presence of severe harmonics
and best absorption of surges. The typical tolerance on rated inductance is plus-or-minus
5 percent.
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YOU BENEFIT FROM THESE UNIQUE FEATURES
HARMONIC COMPENSATION makes Guard-AC reactors
suitable for use on either the drive input or drive
output. They are designed to carry full rated fundamental
current plus handle current and frequencies associated
with harmonics up to 50 percent more.
TERMINALS are provided as standard to save installation
cost and minimize panel space. Finger proof (IP20)
terminals are provided through 45 amps, solid copper
box lugs above that to 400 amps. Tab type terminals
are available as an option.
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IGBT PROTECTION allows all MTE standard reactors
to be used on the output of variable frequency drives
including IGBT types with switching frequencies up to 20
KHZ. A premium dielectric system is utilized to protect
the first, last and end turns from the potentially high circuit
peak voltages and fast dv/dt which are experienced
in applications with long leads between the inverter and
motor. Additionally, the general dielectric system of each
reactor meets UL-506 (4000 volts rms).
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EPOXY IMPREGNATION minimizes audible noise in the reactor and enhances structural integrity.
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HIGH SATURATION CURRENT RATING of Guard-AC
reactors maximizes their surge current protection capability.
Guard-AC reactors absorb many of the power
line disturbances which cause nuisance trips on voltage
source inverters.
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| OUTLINE DIMENSIONS |
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All Guard-AC reactors are supplied with field wiring
terminals, as illustrated. Units rated 45 amperes or
below are supplied with the international terminal
block as shown. Reactors rated above 45 amperes
thru 400 amperes are supplied with solid copper box
lugs. Larger reactors are supplied with copper tab
type terminals. Refer to these outline drawings and
the table on page 7 for reactor dimensions.
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| MOTOR PROTECTION |
Reactors provide a level of protection from the high peak voltages and fast reise times (dv/dt) which can be exsperienced in IGBT inverter applications when the distance between the inverter and the motor is long.Refer to MTE application guides to determine if a reacdtor will offer suitable protection in your application or whether you should consider a dV/dt or sine wave filter.
For 1000 foot guaranteed protection see MTE DVDT Filters
To supply a guaranteed 5% THVD sine wave at the motor terminals see MTE sine Wave Filters.
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| VOLTAGE SPIKE PROTECTION |
A 3% impedance reactor is very effective at protecting
against damage to or nuisance tripping of
AC voltage source inverters, due to voltage spikes.
Voltage spikes on the AC power lines cause elevation
of the DC Bus voltage which may cause the inverter
to "trip-off" and indicate an over-voltage protection
condition. Use reactors to absorb these line spikes
and offer protection to the rectifiers and DC Bus
capacitors while minimizing nuisance tripping of the
inverter.
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| NEMA 1 CABINETS |
All Guard-AC reactors are available as
either open type or in a NEMA Type 1
general purpose enclosure. To order a
reactor mounted in a cabinet simply
change the second last digit of the part
number from "0" to "1". Example RL-
00802 becomes RL-00812.
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| Reactor Part Number |
Type |
H |
W |
D |
WGT. (LBS) |
Cabinet |
RL-002XX, RL-004XX, RL-008XX,
RL-012XX, RL-01801, RL-01802 |
Wall
Mount |
8 |
8 |
6 |
6 |
CAB-8 |
RL-01803, RL-025XX, RL-035XX
RL-045XX, RL-055XX, RL-080XX,
RL-100XX, RL-130XX, RL-160XX, RL-200XX, RL-25001 |
Floor |
13 |
13 |
13 |
18 |
CAB-13V |
RL-25002, RL-25003, RL-320XX,
RL-400XX, RL-500X1 |
Floor |
24 |
17 |
17 |
27 |
CAB-17V |
| RL-500X2,RL-500X3,RL-600XX |
Floor |
47 |
27 |
25 |
144 |
CAB-26C |
| RL-750XX |
Floor |
31 |
47 |
25 |
158 |
CAB-30B |
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To select the Line/Load Reactor for your application see:
Selection Tables
Specification Table
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