gefran WATTCOR W312 User manual

The “WATTCOR W312” thyristor power controllers are designed to control:
- standard resistive loads with a low temperature coefficient
- short-wave infrared heaters
- inductive loads, transformer primaries
They can be used in the following cases:
• Single-phase: connection of the load and the unit between 2 phases or between one phase and Neutral.
• Three-phase: use of three W312, open delta or star with neutral connected.
This model is designed on the basis of a common architecture, whose dimensions are defined by the eight different cur-
rent load specifications for an ambient temperature of 50°C.
The power circuit has been designed to operate under a wide range of voltage. The working voltage can vary from a min-
imum of 24Vac to a maximum of 660Vac (Max. range 20….725Vac).
The phase angle firing device ensures accurate control of the power and fast switching.
A logic input can be used to inhibit the power output, where necessary, not withstanding the presence of the command
signal.
The LED indicators on the front indicate:
• the presence of the electronics auxiliary supply voltage;
• the conduction status of the unit.
The operating principle is phase angle firing:
The load power control is performed by slicing the individual half-waves.
The conduction angle varies in proportion to the analog control signal so that power can be adjusted from 0 to 100%.
The voltage control signal (0...5V or 0...10V) or current control signal (0/4...20mA) is normally supplied by a temperature
controller or directly from a potentiometer (manual control). A soft start function is also available.
In this case the conduction angle varies from zero up to the value corresponding to the control input in a set time.
This function is indispensable with resistive loads having low resistance when cold (tungsten, molybdenum dislicide, kan-
thal super).
A voltage of 5 Vdc is available to supply an external potentiometer for the manual control of the instrument.
WATTCOR W312
POWER CONTROLLERS WITH PHASE ANGLE FIRING
GENERAL PRESENTATION
code 85383C / Edition 04 -07/09
INSTALLATION AND
OPERATION MANUAL
Phase angle control when
analog input = 50% Soft-Start
I
t
I
t
t
IRMS
Softstart time
20msec
1
85383C_MHW_W312_0709_ENG

The power controllers must be assembled in a closed cabinet, protected from dust, humidity and any corrosive factors.
The ambient temperature of the cabinet must not exceed 50°C.
Each WATTCOR dissipates a power approximately defined by the equation:
W=1.2x l
W = dissipated power in Watts
I = current in Amperes controlled by the power controller
The power controllers with capacity from 25 to 100A are cooled by natural convection. To ensure this occurs, the cooling
fins must absolutely be in a vertical position.
The model 150A includes an integrated fan which in the installation must be below the heatsink.
A thermal safety switch is available to activate an alarm or inhibit conduction in case of overheating of the heatsink (bro-
ken fan…. ). The thermal switch opens when the temperature is near 100°C; closing hysteresis is approximately 35°C.
The frequent intervention of this safety device indicates that ventilation is insufficient.
Where this is so it is essential to verify the temperature and aeration of the cabin.
The heatsink can reach a high temperature. Even if electrically insulated, any contact must be avoided during operation.
Even with the electrical panel off the thermal inertia of the heatsink must be kept in mind.
Power
input
Plug-in
connector
Power
output
D8W
H
19
Side view Front view
Nominal current 25-40A
DIMENSIONS
40Aac 40
75Aac 75
100Aac 100
150Aac ** 150
W312 660 2
MODEL
ORDER CODE
ELECTRICAL CABINET - COOLING
W312
NOMINAL CURRENT
25Aac 25 AUXILIARY SUPPLY
2 230Va.c. 50Hz (•)
0 0
NOMINAL VOLTAGE
660Vac 660
INPUT TYPE
2 0-10 Vdc standard *
!
Kindly contact GEFRAN for information on availables codes.
3 400Va.c. 50Hz (•)
*analog input type selectable
by dip switches:
• 0-5Vdc and potentiometer
• 0-10Vdc (standard)
• 0-20mA
• 4-20mA
** With cooling fan
(nominal voltage 230Vac)
(•) 60Hz on request
285383C_MHW_W312_0709_ENG

Plug-in
connector
Power
output
Power
input
Plug-in
connector
Power
output
Power
input
D
D
8
8
8
8w
w
HH
Nominal current 75-100
Nominal current 150A
Dimensions in mm and average weight of the models (ref. Nominal Current)
25 66 130 105 0.8
40 83 130 120 1.2
75 83 175 125 1.7
100 83 175 160 2.3
150 83 215 160 2.7
CAPACITY
AMPERES WIDTH
WHEIGHT
HDEPTH
DWEIGHT
Kg.
3
85383C_MHW_W312_0709_ENG

CONNECTIONS
To ensure correct cooling, the minimum horizontal distance to be respected between the power controllers must be
20mm. Where there is overlapping, assemble the power units in a quincuncial layout and leave sufficient vertical space
(approximately 100 mm) to facilitate the connections.
• THE DEVICES CAN BE FASTENED:
- normally on DIN RAIL. For sizes from 75 to 150A it is advisable to assemble a second bar to be used as a support, to
prevent the anchor bar from bending under the unit’s weight.
- On a panel, using a fixing plate supplied as an option and available only for models 75A, 100A and 150A.
• GENERAL PRECAUTIONS
The power controllers are not sectioning or insulating devices.
In order to guarantee functional safety, it is advisable to:
- install a general power supply switch-off system which ensures the insulation between the device and the network.
- Connect the heatsink of the power controllers from 25 to 150 A to earth before carrying out all other connections, and
before disconnecting it or carrying out any intervention on the unit.
Assemble a protection device suitable for the installation features (automatic switch, fuses, …)
The ultra rapid fuses usually proposed as an option only provide protection for the thyristors of the unit and do not
ensure complete protection of the instrument.
The installation and wiring must be carried out in full compliance with the standards in force. Special care must be taken to
keep the power cables separate from the control cables along their entire length. The control signals connection must be
done with shielded cables where the shield is earthed to a single point, preferably on the side of the origin of the signal.
• CONNECTION TERMINAL BOARD
The CAGE power terminals of the unit allow the use of cables with/without crimped terminals.
For 25 and 40A power controllers it is possible to connect in input the two phases or one phase and one neutral. In this
case the inner crossing connection between input 1 and output 3 is used.
ASSEMBLY - FASTENING
The heatsink can reach a high temperature. Any type of contact must be avoided, even accidental, between the
dissipater and the electric connection cables.
!
Fastening, rear view
DIN bar support fastening
2 holes Ø 6,5mm
98mm
PANEL ASSEMBLY KIT
Cod. 1886001
(OPTION for models form 75 to 150A)
It is essential to respect the correct locking torque and choose the cable section which is most suitable for the capacity
used, in order to avoid dangerous overheating of the unit.
!
The command and inhibition signals, thermal safety switch, electronics supply are grouped on a black plug-in connector
which allows the use of cables with a cross section ≤1.5 mm2.
The fan include with 150A models is connceted to a 230Vac power supply by means of a specific connector.
Rating A Terminal capacity mm2Tightening torque Nm
25 - 40 from 1,5 to 16 from 1,2 to 1,4
(16 to 6 AWG)
75 - 100 - 150 from 20 to 70 from 6 to 7
(5 to 00 AWG)
485383C_MHW_W312_0709_ENG

W312 WIRING DIAGRAMS
Models with 230 VAC auxiliary power supply: code W312 … 020
(**)
LOAD
4
Control Card
34
1
2
3
7
5
6
8
9
L1
L2
Ground
12
(+)
(-)
4
Control Card
LOAD
43
1
3
2
(**)
Ground
L2
L1
12
8
6
5
7
9
(-)
(+)
(*)
Models with auxiliary power supply >230 VAC (for ex.: code W312…030, auxiliary power supply 400 Vac).
---- On 25A and 40A models, direct connection with terminals 1-3 is available for connecting one of the phases to
the load, as an alternative to outside connection.
(*) Auxiliary power supply for control board (indicated in code and on label): must be in phase (synchronized) with
the voltage applied to the load.
If not directly available, use an external auxiliary transformer.
IMPORTANT
On models with auxiliary power supply >230 VAC, one phase of the power supply for the control board is already
connected internally. Therefore, terminal 8 is not used and must not be connected.
(**) 150A mod. only
Fuse
Aux. power supply
230Vac (*)
common Analog
control
+5Vdc
Power output inhibition (4...30Vdc)
Control enable (4...30Vdc)
Thermal
protection (**)
Fan
230Vac
Fuse
Aux. power supply
400Vac (*)
common Analog
control
+5Vdc
Power output inhibition (4...30Vdc)
Control enable (4...30Vdc)
Thermal
protection (**)
Fan
230Vac
SINGLE-PHASE LOAD CONTROL
5
85383C_MHW_W312_0709_ENG

Example 1 - Star connection with neutral.
Line voltage 400 VAC. 3 units W312 25A (or 40A).
Analog control (linear signal). Auxiliary power supply 230 Vac (W312 - [] [] [] - 660 - [] - 020)
-+
-
Controller
3
LOAD
4
Control Card
1 2
Neutral
Ground
L3
L2
L1
LOAD
1
3 4
7
4
2
3
5
6+5Vdc
8
9
(*) 12
1
3
7
4
Control Card
2
3
5
6+5Vdc
(*)
8
9
1
1
4
7
4
2
3
5
6
2
8
9
(*)
LOAD
Control Card
+5Vdc
LOAD
L3
Ground
L1
L2
Control Card
6
3
1
2
5
4
9
8
7
LOAD
Control Card
(*)
6
3
1
2
5
4
9
8
7
(*)
LOAD
6
Control Card
3
1
2
5
4
9
8
7
(*)
(*) (*) (*)
---- On 25A and 40A models, direct connection with terminals 1-3 is available for connecting one of the phases to the load, as an
alternative to outside connection.
(*) Auxiliary power supply 230 VAC + 10%-20%-50Hz for control board (indicated in code and on label): must be in phase
(synchronized) with the voltage applied to the load. If not directly available, use an external auxiliary transformer.
Unit 1
Fuse
Unit 2 Unit 3
FuseFuseFuse
Linear input (+)
Power output inhibition (+)
Control
output Control enable (+)
Common (-)
Example 2 - Open delta connection.
Line voltage 400 VAC. 3 units W312 75A (or 100A).
Potentiometer control. Auxiliary power supply 400 Vac (W312 - [] [] [] - 660 - [] - 030)
Fuse Fuse
Unit 1 Unit 2 Unit 3
Power output inhibition
Potentiometer
10kOhm
+5Vdc+5Vdc
+5Vdc
not connected
+5Vdc
not connected not connected
(*) Auxiliary power supply 400 VAC + 10%-20%-50Hz for control board (indicated in code and on label): must be in phase
(synchronized) with the voltage applied to the load.
IMPORTANT
On models with auxiliary power supply >230 VAC, one phase of the power supply for the control board is already connected
internally. Therefore, terminal 8 is not used and must not be connected.
CONTROL OF THREE-PHASE LOADS WITH THREE WATTCORS OPERATING IN SINGLE PHASE
685383C_MHW_W312_0709_ENG

SPECIFICATIONS OF USE WITH LOAD CONTROL VIA TRANSFORMER
Sizing (see connections at page 8) :
Wattcor W312 :
1) The rated current of the W312 must be at least three times higher than the rated current on the transformer primary
2) Voltage and frequency must match those specified for auxiliary feed of the control board:
For voltages 230Vac a 50Hz W312….. -020
“ “ 400Vac a 50Hz W312….. –030
“ “ 230Vac a 60Hz W312….. –020-B37
“ “ 400Vac a 60Hz W312….. –030-B37
TRANSFORMER (T1) :
1) Transformer power must be (at most) double the power absorbed by the load at rated voltage.
2) In presence of line voltage on the W312, the transformer output must always be connected stably to the load (without fuses or
cut-outs).
3) There must be no snubbers in parallel to the transformer primary.
VARISTORS:
Overvoltage protection must utilize two varistors (MOV) connected between primary and ground.
1) The rated voltage (Vrms) of the MOV must be double that of the line.
2) The dimension and thus the energy applicable to the MOV must be suitable for transformer power.
FUSE (F1):
The short circuit protection for the W312 power module (SCR) must always be active and provided with a high-speed fuse (see notes
in W312 manual).
Fuse size must be as specified in the manual.
FUSES (F2, F3):
The short circuit or overload protection for the transformer must be provided with high-speed fuses.
Fuse size must be sufficient to allow work under conditions of short circuit on the transformer secondary.
Automatic cut-outs (such as those to protect semiconductors) may be used.
Fuse size must be sufficient to allow work under conditions of short circuit on the transformer secondary.
ANALOG CONTROL:
With a short conduction angle (with analog control <15%) a continuous component is produced in the transformer. This can lead to
high saturation currents and consequent interruption of fuses.
1) The analog control must never be less than 15% of the setting range.
2) Remove the digital validation control (terminal 3) to completely interrupt transformer drive.
7
85383C_MHW_W312_0709_ENG

Connections
Common
Inhibition
Power
5..30
Vdc
Analog
Control
Analog
Control
F=6/7Nm
Control Card
1
3 41 76 85
-
+
Out+5V
9
Control Card
34
5413
Out+5V
1
F1
6897
+
-
+
-
Common
Inhibition
+
-
Power
5..30
Vdc
Vdc
5..30
Enable
Control
Digital
+
+
5..30
Vdc
Vdc
5..30
Enable
-
Common
Inhibition
-
Power
Control
Digital
Control Card
34
1 543
Out+5V
+
1
6897
Analog
Control
+
--
5..30
Enable
+
Vdc
Control
Digital
-
Control Card
Out+5V
1 543
+
+
5..30
Vdc
+
-
F=6/7Nm
1
6897
Analog
Control
-
Common
Inhibition
Power
-
Enable
5..30
Vdc
Control
Digital
LOAD
F3
Varistors
LOAD
Varistors
LOAD
Varistors
LOAD
Varistors
F F F1
F3
T1 T1
T1 T1
F1 F1
F FF3 F3
30Vac
30Vac
400Vac
400Vac
L1
T1
PE
L1
T1
PE
L1
T1
PE
L1
T1
PE
W312-025(040)-660-020 W312-025(040)-660-030
W312-075(100) (150)-660-030
W312-075(100) (150)-660-020
885383C_MHW_W312_0709_ENG

W312 units have the following control inputs available:
• analog input in current or voltage that allows to set the desired power
output (0..10V standard, 0…5V / 0…20mA / 4…20mA selectable
by dip-switch).
The analog input (0…5V) can also be used for control via
potentiometer (R=10kΩ).
• logic input that enables the control.
If not used, must be connected to terminal 5 (+5Vdc) .
• inhibition logic input that locks the power output when the unit is
active, whatever the control signal level may be.
Enable/inhibit controls are active with voltage in the 4…30 VDC range,
and can also be operated by means of potential-free contacts
connected between terminals 3-5 and 4-5, respectively.
CONTROL SIGNALS
}
+
-
-
+
+
-
Logic control (ON/OFF)
Digital control (PWM)
Analog control
Potentiometer control
Linear signal
0-10V, 0-5V, 0/4-20mA
(selectable internally)
+5Vdc
Power output
inhibition(4...30Vdc)
Control enable
(4...30Vdc)
10kOhm
+5Vdc
Power output
inhibition (4...30Vdc)
Control enable (4...30Vdc)
+5Vdc
Power output
inhibition (4...30Vdc)
Logic input
(ON = 4...30Vdc)
+5Vdc
Power output
inhibition (4...30Vdc)
Digital input PWM (Pulse Width Modulation)
(carrier frequency from 500Hz to 10kHz, max 24Vdc)
7
6
5
4
3
7
6
5
4
3
7
6
5
4
3
7
6
5
4
3
9
85383C_MHW_W312_0709_ENG

25A and 40A models have a pair of input terminals to connect the line (24…660 VAC) and a pair of output terminals to
connect the load.
The solid state relay (two SCRs in antiparallel) is connected internally to terminals 2-4.
Terminals 1-3 are connected directly inside the unit. This connection can also be made externally.
75A, 100A, 150A models have a single input terminal to connect a single phase and an output terminal to connect the
load. The solid state relay (two SCRs in antiparallel) is connected internally to these terminals.
The other phase must be connected to the load externally.
POWER CONNECTIONS
PROTECTIVE EARTH CONNECTION
All models must be grounded by connection to the protective earth terminal.
AUXILIARY POWER SUPPLY
The auxiliary power supply for the W312 must be in phase with the voltage applied to the load.
The auxiliary power supply voltage is indicated in the code and on the product label.
• On models with 230 VAC auxiliary power supply, the auxiliary voltage is applied to terminals 8 and 9.
• On models with auxiliary power supply > 230 VAC, one phase is already connected internally to the power input.
The user must connect the other phase to terminal 9 of the plug-in connector (terminal 8 is not used).
Use an external transformer if the load power supply and the auxiliary power supply required by the W312 have a
different voltage. The auxiliary voltage applied must always be the voltage indicated in the code and on the product
label (auxiliary power supply).
FAN POWER SUPPLY (150A model only)
The W312 150A has a built-in cooling fan.
The fan is powered at 230 VAC. The connection is made to the terminal board on the fan, independent of the board for
the control signals.
10 85383C_MHW_W312_0709_ENG

OPERATING MODES
W312 units offer the following control modes selectable by dip-switches:
• analog control (dip switch GC4=OFF): the solid state power unit transfers to the load a % of power in function of the
analog input signal (terminals 6-7).
The set power is supplied / interrupted by activating / deactivating the logic signal at terminal 3.
The type of analog signal (standard 0...10V) can be selected by the internal dip switches SW1-SW2-SW3-SW4 (see
chart)
By enabling the "Soft-start at power-on" function (dip switch GC5=ON), when the auxiliary power supply is switched on
(with logic signal present at terminal 3) the set power is reached gradually after a fixed time of about 40 sec.
By enabling the "Control variation gradient" function (dip switch GC2=ON) setpoint variations can be made more gra-
dually; for example, a set point variation from 0 to 100% is performed on the load with a ramp of about 2.2 sec.
• logic control (dip switch GC4=ON, SW1=ON, SW2=OFF, SW3=ON, SW4=OFF): the solid state power unit transfers
100% of power to the load.
The power is supplied / interrupted by activating / deactivating the logic signal at terminal 3.
For this function, terminal 6 (analog input) must not be connected.
By enabling the "Soft-start at power-on" function (dip switch GC5=ON), when the auxiliary power supply is switched on
(with logic signal present at terminal 3) the power is reached gradually after a fixed time of about 40 sec.
By enabling the "Control variation gradient" function (dip switch GC2=ON) the switching phase can be made more gra-
dually; for example, passage from 0 to 100% of power takes place with a ramp of about 2.2 sec.
If GC3 and GC2 are both enabled, the 2.2 sec. (approx.) ramp is also executed when the logic control is deactivated.
• PWM control (dip switch GC4=ON, GC3 = ON, SW1 = ON, SW2 = OFF, SW3 = ON, SW4 = OFF). In logic control
mode, you can send a PWM type digital signal (Pulse Width Modulation) to terminal 3.
The power controller transfers to the load a % of power that it depend on the ratio between the “ON time” and the “OFF
time” within the cycle; this function lets you set a power set point by means of digital signal (for ex., from PLC or con-
troller with PWM output) with carrier frequency from 500 Hz to 10kHz, logic level Lo<0.6V, Hi>2.5V (max 24 VDC).
Example: with digital signal at 1 kHz and tON=50%, you have 25% of power output.
IDENTIFICATION OF THE DIP-SWITCHES
Control type and operating mode are selected by internal dip-switches SW1...4 and GC2...5.
To access them, remove the side cover (insert a screwdriver into the slots).
CUT POWER TO THE ELECTRICAL CONTROL PANEL BEFORE REMOVING THE COVER
!
The green LED P indicates the command status:
- if on: thyristor conduction
- if off: thyristor inhibition.
The green LED signals the presence of the auxiliary supply voltage.
W312
P
SIGNALING
11
85383C_MHW_W312_0709_ENG

SW4
SW2
SW3
SW1
Switches
Max
Min
Off On
SW4
SW3
SW2
SW1
Off On
Switches
12 85383C_MHW_W312_0709_ENG

SW4-
SW3-
SW2-
SW1-
Max
Min
On
GC2
Off
GC5
Switches
Switches
Switches
GC4 GC3
123456789
Off
On
34567 89
SW4
SW3
SW2
SW1
Switches
GC2 GC5
On
Off
On
Off
GC4 GC3
Switches
Switches
13
85383C_MHW_W312_0709_ENG

GC3 GC4 GC2 GC5 SW1 SW2 SW3 SW4
logic soft-start
control logic/ control at switch-on
deactivation analog variation of the auxiliary Type of analog
ramp control gradient power supply signal
analog 0...10V OFF OFF OFF ON OFF OFF OFF
control 0...5V OFF OFF OFF ON OFF ON OFF
potentiometer OFF OFF OFF ON OFF ON OFF
0...20mA OFF OFF OFF ON OFF ON ON
4...20mA OFF OFF OFF OFF ON ON ON
analog 0...10V OFF OFF ON ON OFF OFF OFF
control 0...5V OFF OFF ON ON OFF ON OFF
with potentiometer OFF OFF ON ON OFF ON OFF
variation 0...20mA OFF OFF ON ON OFF ON ON
gradient 4...20mA OFF OFF ON OFF ON ON ON
logic no ramps OFF ON OFF ON OFF ON OFF
control with 2 sec OFF ON ON ON OFF ON OFF
activ. ramp
with 2 sec
activ./deactiv. ON ON ON ON OFF ON OFF
ramp
PWM carrier frequency
control 500Hz..10kHz ON ON - ON OFF ON OFF
soft-start at enabled ON
power-on disabled OFF
default = analog
(factory control OFF OFF OFF OFF ON OFF OFF OFF
setting) 0-10V
DIP-SWITCH SETTINGS
- indifferent
47 50 (•)
Nominal Voltage - Vac
W312
POWER LINE VOLTAGE
NOMINAL CURRENT
The capacities are specified at an ambient temperature of 50°C. Typical dissipation: 1.2 Watt per ampère
Model I minimum I minimum with I maximum with I2t at 10ms Dissipation
Amb.Temp. 20°C Amb.Temp. 50°C at I nominal
Ampere Ampere Ampere A2S Watt
25A 1 30 25 1800 30
40A 2 50 40 11200 50
75A 2 85 75 14450 90
100A 3 120 100 151000 120
150A 3 200 150 151000 180
TECHNICAL SPECIFICATIONS
MODEL
Frequency - Hz
RANGE OF USE
Minimum Rated Maximum
20 660 725
53
(•) 60Hz on request
14 85383C_MHW_W312_0709_ENG

AUXILIARY POWER SUPPLIES
For the electronics of the WATTCOR W312: - 230V or 400V ± 10%(see order code) 50Hz (•),
5VA in phase with the voltage applied to the load
For the cooling fan (model 150A) : - 230V, 50/60Hz, 14VA
OPERATIVE CONDITIONS
- Operating temperature: -5...+60°C
- Storage temperature : -20...+70°C
- Relative humidity : from 10 ... 90% without condensation
- Non dusty, non explosive, non corrosive atmosphere.
SAFETY
- Insulation voltage 3750Vac between the command electronics and the controlled power.
- Internal protection from overvoltage and dV/dt by means of varistors and RC systems.
- Insulated heatsink.
- Thermal switch for model 150A: opening of the contact at 100°C, closing hysteresis 35°C.
- IP20 degree of protection.
- Self-extinguishing casing UL 94 VO.
(•) 60Hz on request
CONTROL SIGNALS
Model Input impedance
(KΩ)
Signal
W312
Level
0 (non active).
1 (active)
0-20mA
4-20mA
0-5Vdc
0-10Vdc
0 (non active).
1 (active)
Minimum
0
1,9
0mA
4mA
0V
0V
0
4
Nominal
0
5
0
5
Maximum
1
30
20mA
20mA
5V
10V
1
30
Value
0,25
0,1
Condition
5 Vdc
5Vdc
27KΩ<5V
100KΩ<5V
Internal Shunt
250Ω
35KΩ
70KΩ
27KΩ<5V
100KΩ<5V
Type
Logic
input
Analog
control in
current
Analog
control in
voltage
Inhibition
logic input
Value in V or in mA Absorbed current
(mA)
DISSIPATION CURVES
10°C20°C30°C40°C50°C60°C0°C
0
25
40
50
85
100
200
X
150
120
75
30
IRMS [A]
W312 150A
W312 100A
W312 75A
W312 40A
W312 25A
Ambient temperature °C
15
85383C_MHW_W312_0709_ENG

INSTALLATION NOTES
The need of a filter in order to reduce the conducted emissions , during the firing of the Thyristors at a certain
phase angle, depends on the specific application. In fact the level depends on the layout of the machine and the
load typology.
Therefore it is suggested to check the level of the emissions of the machine in order to define how to reduce them.
Following is the schematic for a typical filter connection.
W312
P
Fuse
Load
Filter
Phase
Neutral
Ground
16 85383C_MHW_W312_0709_ENG

It is important to connect the filter as close as possible to the power controller.
A filter with the following characteristics is suggested
Voltage Voltage of the load
Current Max current on the load
Operating frequency 50/60Hz
Common mode >35dB@100KHz
>60 dB da 150KHz a 1.5MHz
Differential mode >50dB@100KHz
>60 dB da 150KHz a 1.5MHz
Some filters tested in single phase applications:
Model Load 230V Load 400V
W312 25A ICAR FL140.30.00 ICAR FL140.30.00 H
W312 40A ICAR FL140.50.00 ICAR FL140.50.00 H
W312 75A ICAR FL140.80.00 ICAR FL140.80.00 H
W312 100A ICAR FL140.120.00 ICAR FL140.120.00 H
W312 150A ICAR FL140.250.00 ICAR FL140.250.00 H
FUSES AND FUSEHOLDERS CODES
The W312 power controller does not have an integrated fuse.
Separate fuses and fuse holders are proposed as accessories (see table below).
The ultra rapid fuses are exclusively intended for the protection of the thyristors of the WATTCOR. In no case
should these replace the device line protections. In order for the manufacturer’s guarantee to be valid, it is
obligatory to use the fuses indicated below for each type of WATTCOR. Where the load generates significant
transitory excess currents (short wave infrared elements), it is necessary to consult GEFRAN.
ACCESSORIES
!
ULTRA RAPID FUSES and FUSES CAPACITY
FUSEHOLDER FASTENING
- On symmetrical DIN bar for PF 22x58 (WATTCOR 25-40 and 75A).
- On panel by means of two screws diam. 6 mm with horizontal space between centres of 19mm for PF 27x60
(WATTCOR 100 and 150A).
50A
FWP50A22F Bussmann
W312-25A-660V 1800 FUS-050 PF-22x58
H139 x L36 x P86
W312-40A-660V 63A
FWP63A22F Bussmann
11200 FUS-063 PF-22x58
H139 x L36 x P86
W312-75A-660V 100A
FWP100A22F Bussmann
14450 FUS-100 PF-22x58
H139 x L36 x P86
W312-100A-660V 250A
TO76308 Ferraz
151000 FUS-250 PF-27x60
H150 x L39 x P107
250A
TO76308 Ferraz
151000 FUS-250 PF-27x60
H150 x L39 x P107
W312-150A-660V
22x58
22x58
22x58
27x60
27x60
Model Ultra Rapid Fuse
Manufacturer/ Model
I2tMax.
recommended
for the fuse
Fuse order
number
Code
Fuse holder
order number
Code
Dimensions
mm
17
85383C_MHW_W312_0709_ENG

This device conforms to European Union Directive 2004/108/CE and 2006/95/CE as amended with reference to generic standards:
EN 61000-6-2 (immunity in industrial environment) EN 61000-6-4 (emission in industrial environment) - EN 61010-1 (safety regulations).
WARNING: this symbol indicates danger.
Read the following warnings before installing, connecting or using the device:
• follow instructions precisely when connecting the device.
• always use cables that are suitable for the voltage and current levels indicated in the technical specifications.
• In applications with risk of damage to persons, machines or materials, you MUST install auxiliary alarm devices.
• Power controllers are designed to assure a switching function that does not include protection of the load line or of devices connected to it. The
customer must provide all necessary safety and protection devices in conformity to current electrical standards and regulations.
It is advisable to verify frequently that the alarm device is functional even during the normal operation of the equipment.
• DO NOT operate the device in rooms with dangerous (inflammable or explosive) atmosphere.
• During continuous operation, the heat sink can reach up to 100°C, and stays at a high temperature even after the device is turned off due to
thermal inertia; therefore, DO NOT touch it and avoid contact with electrical wires.
• do not work on the power part without first disconnecting electrical power to the panel.
• do not remove the cover when the device is powered!
Installation: category II, pollution degree 3, double insulation
• correctly ground the device using the specific terminal.
• power supply lines must be separated from device input and output lines; always check that the supply voltage matches the voltage indicated on
the device label.
• avoid dust, humidity, corrosive gases and heat sources.
• respect the installation distances between one device and another (to allow for dissipation of generated heat).
• respect the indicated dissipation curves
Maintenance: at regular intervals, check operation of the cooling fans and clean all air ventilation filters.
• repairs must be done out only by trained and specialized personnel. Cut power to the device before accessing internal parts.
• do not clean the box with solvents derived from hydrocarbons (trichloroethylene, gasoline, etc.). Using such solvents will compromise the device's
mechanical reliability. Use a clean cloth moistened with ethyl alcohol or water to clean external parts in plastic.
Service: GEFRAN has a service department. The warranty excludes defects caused by any use not conforming to these instructions.
•WARNINGS
!
GEFRAN spa reserves the right to make aesthetic or functional changes at any time and without notice.
18 85383C_MHW_W312_0709_ENG