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HSG Family

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Home › Products › VariacsToroidal single-phase HSG Family

Toroidal single-phase Variacs

HSG Family

General Info
Metrel Variacs are made of high quality parts and have followed advanced technological studies.
The cooling surfaces have been improved and increased, to avoid extra heating at the brush contact point with with the track, even under continuous and heavy use.
The correct use is thus assured for longer periods and without performance losses.
The Variacs conform to the standards  VDE 0552 and international standards IEC 60989.

Assembly
The Variacs can be assembled either horizontally or vertically.
All models have three fixing points with screws, where they can be fixed to the device board.
The smaller models, M 15 and M 30, can be fixed to the board with a nut on a potentiometer regulation shaft .
Each model has a regulating knob and indication panel of the output power in percentage.

Ambient Temperature 
The Variacs are designed to assure a correct function up to 40° C.  Higher temperatures need a forced cooling system or a reduction of the Variac's services by 15% for every extra 10° C (ex.: a 20 A Variac must be reduced to 17 A max).

Maintenance
No particular maintenance is needed, when the Variac is used in normal conditions.  Periodical cleaning is required by eliminating dust from the contacts track, along with a check up of the brush, controlling that it is intact and long enough to allow a correct pressure of the spring .
In dirty and salty surroundings, it is advisable to clean the sampling track with fine sandpaper or a deoxidizer.
If the brush contact is no longer safe and must be substituted, please do the following:
- with a welder, unweld the the copper cord which gives current to the brush. Loosen the slider at the output connector and when the used brush comes off, insert a new one and reconnect it.
- tighten and adjust the slider two to three mm. from the sampling track surface.

Connections and Protections
The input power must not exceed 6% of the nominal, to avoid possible coil over heating.
The output circuit, conform to the standards VDE 0552-5.69, must be protected against voltage overloading and short circuiting with fuses and thermal protections.
The primary circuit must be protected with a delayed fuse with correct values for each output.

Input Power 230 V  
Output power
from 0 to 230 V
Output power
from 0 to 260 V
Art. No. In A Output
Power
Art. No In A Output
Power
Weight (kg) Model Fig.
HSG 230/1 10 230 HSG 260/0.8 0.8 208 1.4 M15 1,2
HSG 230/1.25 1.25 287 HSG 260/1 1 260
HSG 230/1.6 1.6 368 HSG 260/1.4 1.4 364 2.4 M30 3.4
HSG 230/2 2.0 460 HSG 260/1.6 1.6 416
HSG 230/2.5 2.5 575 HSG 260/2 2.0 520
HSG 230/3 3 690 HSG 260/2.5 2.5 650 3.5 M50 4
HSG 230/4 4 920 HSG 260/3 3 780
HSG 230/4.5 4.5 1035 HSG 260/3.5 3.5 910 4.6 M100 5
HSG 230/6 6 1380 HSG 260/4.5 4.5 1170
HSG 230/8 8 1840 HSG 260/6.3 6.3 1638 7 M200
HSG 230/10 10 2300 HSG 260/8 8 2080
HSG 230/12 12 2760 HSG 260/10 10 2600 9.2 M250
HSG 230/18 18 4140 HSG 260/15 15 3900 13.3 M300 6
HSG 230/23 23 5290 HSG 260/20 20 5200 14 M400 7
HSG 230/32 32 7360 HSG 260/30 30 7800 20.5 M500
Frequency in use:
50 at 400 Hz
Testing power:
2.5 kV (AC 50 Hz)
between the metal parts and under-pressure points.
Protection level: Classe 1

Dimensions
Model d1 d2 d3 d4 Threading h h1 a Fig.
M15 80 - - - M10X0.75 - 68 49 1
M15 80 - - - 3XM4 - 71 49 2
M30 100 - - - M10X0.75 98 100 74 3
M30 100 - - - 3XM4 98 100 74 4
M50 117 - - - 3XM4 98 100 83
M100 125 100 95 80 3XM6 120 121 86 5
M200 153 100 95 80 3XM6 120 121 100
M250 174 100 95 80 3XM6 120 121 110
M300 226 - 100 - 3XM6 116 117 149 6
M400 230 - 100 - 3XM6 110 120 155 7
M500 270 - 100 - 3XM6 125 135 175

Technical sheet download in PDF

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