GZ 10 / 25 / 40 / 55
GZ 10 / 25 / 40 / 55
THREE-PHASE SOLID STATE RELAY WITH LOGIC CONTROL Vdc / Vac
Main features
• Control input from VDC/VAC logic signal
• 3-phase alternating current solid state
relay
• Zero crossing switching
• 3-phase nominal current
3x10/25/40/55A
• Nominal voltage up to 600VCArms
•Integrated SCR thermal protection with LED signal
• Optional alarm output (for interrupted load diagnostics or for SCR overtem-
perature)
• Optoinsulation (input/output)
4000Vrms
• Integrated overvoltage suppressor
• Non-repetitive voltage up to 1200Vp
• In Conformity with EN60947-4-3 and
UL508
Main applications
• Thermoforming
• Plastic extrusion lines
• Industrial ovens and
furnaces
• Heat treatments
• Control applications with
high switching speed
• Mold heating/cooling control units
• Refrigeration
• Air conditioning
PROFILE
3-phase “zero crossing” solid state relay
for control of resistive and inductive loads.
Integrated device designed for industrial
applications demanding control of high
power levels and frequent switching,
with loads up to 3 x 55A (AC51) at
400/480/600Vac.
Control is logic type (Vdc or Vac), signaled by LEDs. Each phase is controlled by
means of semiconductors.
The constructive elements, special production process, and new, sturdy case,
provide excellent reliability and continuity
of service.
All versions are protected against overvoltages and against junction overtemperature, with signal LEDs and (optional) solid
state alarm output.
An optional alarm output is available for
interrupted load diagnostics .
The device is supplied complete with
covers to protect against direct contacts
(covers are removable for wiring).
Accessories available: heatsink, thermostats, fans, fuses and fuse holders.
WARNING: The GZ models must be
used in conjunction with an appropriate
heatsink (Accessory).
Installation must precisely observe the
warnings contained in the installation
notes.
TECHNICAL DATA
General features
Category of use:
AC51, AC53a
Nominal voltage (Ue):
400Vac (max. range 24...440Vac) (TRIAC)
480Vac (max. range 24..530Vac) (SCR)
600Vac (max. range 24..660Vac) (SCR)
Nominal frequency: 50/60Hz
Isolation nominal voltage (Ui): 600Vac
Peak voltage:
<800Vp for models with Ue=400Vac
<1200Vp for models with Ue=480Vac,
Ue=600Vac
Uninterrupted nominal service.
Critical dV/dt OFF-state:
500V/µs for models with Ue=400Vac
1000V/µs for models with Ue=480Vac,
Ue=600Vac
Switching voltage for zero: < 20V
Activation time: ≤1/2 cycle
Deactivation time: ≤1/2 cycle
Potential drop at rated current:≤ 1,4Vrms
IP20 protection
Weight: 300g
Control inputs
- DC INPUT (Type “D”):
Voltage of command circuit (Uc): 5..32Vdc
Activation voltage: >4.5Vdc
Deactivation voltage:<3Vdc
Max. input: [email protected] [email protected]
Max. reverse voltage: 36Vdc
- AC INPUT (Type “A”):
Control voltage: 20...260VAC/VDC
Activation voltage: > 15VAC /VDC
Deactivation voltage: < 6VAC/VDC
Current draw:
<= 8 mAAC/[email protected]/VDC
Additional fuse (3A max) shall be installed on the control input circuit.
Three-phase Star control with neutral
Three-phase Star or Triangle closed control
V
S
R
L2
R
L3
L1
S
R
R
L2
Three-phase Triangle open control
R
R
V
T
L3
V nominal =
P
+10%
V3 • V
I nominal =
L1
R
T2
I
R
T1
T3
S
R
R
T3
V nominal = V
I nominal =
T1
V
R
T2
R
T
I
R
I
T1
Heatsink Thermal Resistance
Calculation
Rth=(90°C-T.amb.max)/Pd
Pd = dissipated power
T.amb.max=max air temperature inside
the electrical cabinet.
Use a heatsink with thermal resistance
inferior to the calculated one (Rth)
GZ 10,25
Junction temperature: ≤125°C
Rth junction/case =1.5 K/W
GZ 40
Junction temperature: ≤125°C
Rth junction/case =1 K/W
GZ 55
Junction temperature: ≤125°C
Rth junction/case =0.6 K/W
GZ 10/...
Nominal current (Imax):
AC51: 3x10 A
AC53a: 3x2 A
L1
Solid Sate Relay Dissipated Power
Calculation
Three-phase relay
Pd=3x1,4*IRMS [W]
IRMS= three-phase load current
Thermal features
Outputs
R
Insulation
Nominal insulation voltage input/output:
2.5KV ac for models with Ue=400Vac
4KV ac for models with Ue=480Vac,
Ue=600Vac
Nominal impulse withstand voltage
(Uimp): 2500Vac
GZ 25/...
Nominal current (Imax):
AC51: 3x25 A
AC53a: 3x5 A
GZ 40/...
Nominal current (Imax):
AC51: 3x40 A
AC53a: 3x8 A
GZ 55/...
Nominal current (Imax):
AC51: 3x55 A
AC53a: 3x15 A
L3
L2
T2
T3
V
V3
R
T
V nominal = V
P
+10%
V3 • V
I nominal =
P
+10%
3•V
TECHNICAL DATA OF THE MAIN CIRCUIT
Model
GZ
GZ
GZ
GZ
GZ
GZ
GZ
10/400
25/400
25/480
40/480
55/480
40/600
55/600
Imax
[Arms]
3x10
3x25
3x25
3x40
3x55
3x40
3x55
Rth,heatsink
@Ta=40°C
[K/W]
1.78
0.57
0.57
0.36
0.19
0.36
0.19
Ie (*)
[Arms]
3x10
3x25
3x25
3x40
3x55
3x40
3x55
(*) Ie = Nominal current (Standard CEI EN 60947-4-3)
Ambient conditions
• Working temperature: -20°C...80°C
• Max. relative humidity: 50% to 40°C
• Max. installation altitude: 2000 slm
• Pollution level : 2
• Storage temperature: -20...85°C
• Class: A (industrial device)
• Suitable for use in pollution degree 2
environmental
Thermal protection
Junction temperature is constantly monitored inside the device.
If the maximum temperature limit is
Rth,heatsink
@Ta=40°C
[K/W]
1.19
0.38
0.38
0.24
0.16
0.24
0.16
Dimension
heatsink
(accessories)
100x127x80
100x127x100
(with fan)
exceeded (T=110°C), current to the load
is interrupted and the yellow signal LED
lights up.
Options
Option 1
(Thermal protection alarm output)
The alarm output option activates closing
of an isolated contact (max 32VAC/VDC,
150mA, conducting resistance <=15 ohm)
when it detects the following condition:
control signal active but SCR / heatsink
is in overtemperature (GZ thermal protection)
Non-repetitive
overcurrent
t=20ms [A]
120
250
400
600
1150
600
1150
I 2t
[A2s]
100
450
645
1010
6600
1010
6600
Option 2
(Thermal protection alarm output and
interrupted load).
Only for GZ with Type “A” input
The alarm output option activates closing
of an isolated contact (max 32VAC/VDC,
150mA, conducting resistance <=15 ohm)
when it detects the following conditions:
- Control signal active but no current in at
least one three-phase branch (interrupted
load)
- Control signal active but no power line
voltage (no line)
- Control signal active but SCR / heatsink
• requires exchange with outside air or an
air conditioner to transfer dissipated power
outside the panel.
• max. voltage limits and derivative of transients in line, for which the solid state unit
has internal protection devices.
• presence of dispersion current < 10mA
(max. value with rated voltage and junction
temperature of 125°C).
Limits of use
• dissipation of thermal power of device
with restrictions on temperature of installation site.
DIMENSIONS
103,5mm
L1
L2
L3
Alarm
L1 L2 L3 A1+
GZ 25/400-0-1
AC51: 25A
AC53a: 5A
400Vac
50/60Hz T1 T2 T3 A2-
T1
T2
T3 On
B1
B2
A1
5,2mm
92mm
73mm
Installation notes
Use the high speed fuses specified in the
catalog according to the connection example provided.
Applications with solid state power units
must also include an automatic safety
switch to cut out the load power line.
Protect the solid state relay by using an
appropriate heat sink (accessory).
The heat sink must be sized according to
room temperature and load current (see
the technical documentation).
Procedure for mounting on heat sink:
The module-heat sink contact surface
must have a maximum planarity error
of 0.05mm. and maximum roughness of
0.02mm.
The fastening holes on the heat sink must
be threaded and countersunk.
Spread 4 gram of thermoconductive silicone (we recommend DOW CORNING 340
HeatSink) on the dissipative metal surface
of the module.
The surfaces must be clean and there
must be no impurities in the thermoconductive paste.
Use 4 M4x10 or M5x10 screws with flexible
washer for attachment.
Alternately tighten the fastening screws
until reaching a torque of 0.60Nm.
Wait 30 minutes for any excess paste to
drain.
Alternately tighten the four fastening
screws until reaching a torque of 1.2 Nm
for the M4 screws and 1.5 Nm for the M5
screws.
It is advisable to make random checks of
correct installation by disassembling the
module and checking that there are no air
bubbles under the copper plate
Install the units cantilevered to the panel so
that air can flow vertically over the heatsink
without obstructions.
• Maximum surrounding air temperature
40°C (for UL).
• Open type equipment
47,5mm
is in overtemperature (GZ thermal protection).
Maximum delay in tripping of load interrupt
alarm < 400ms.
Maximum length of wires between GS and
load for correct operation of load diagnostics < 25m
5..32
Vdc
A2
Depth:
- Model GZ-xx/xx-D-x : 44 mm
- Model GZ-xx/xx-A-x : 52 mm
FACEPLATE DESCRIPTION GZ with DC control (Models GZ-xx/xx-D-x
L1
L2
L3
Alarm
L1 L2 L3 A1+
GZ 40/600-0-1
VEN-90 fan:230Vac
AC51: 40A
AC53a: 8A
T1
600Vac
50/60Hz
B2
A1
T1 T2 T3 A2-
T2
B1
T3 On
5..32
Vdc
A2
L1 : L2 : L3 : T1 : T2 : T3 : A1 : A2 : B1 : B2: Led ON: Led Alarm: Phase 1 input
Phase 2 input
Phase 3 input
Phase 1 output
Phase 2 output
Phase 3 output
Control signal (+)
Control signal (-)
Alarm output (option)
Alarm output (option)
Red led signal indicator
Yellow led (alarm overtemperature junction)
FACEPLATE DESCRIPTION GZ with AC control (Models GZ-xx/xx-A-x)
L2
L1
L3
Alarm
L1 L2 L3 A1+
B1
B2
G Z 40/600-0-1
V E N-90
fan:230V ac
AC 51: 40A 600V ac
AC 53a: 8A 50/60 Hz
T1
Out-Al
A1
T 1 T 2 T 3 A2-
20..260 V ac
T2
T3
On
A2
L1 : L2 : L3 : T1 : T2 : T3 : A1 : A2 : B1 : B2: Led ON: Led Alarm: Led OUT-AL:
Phase 1 input
Phase 2 input
Phase 3 input
Phase 1 output
Phase 2 output
Phase 3 output
Control signal (AC)
Control signal (AC)
Alarm output (option)
Alarm output (option)
Red led signal indicator
Yellow led (alarm overtemperature junction)
Red Led interrupted load alarm (with option 2 only)
CONNECTION EXAMPLES - GZ GZ with DC control (Models GZ-xx/xx-D-x)
Three-phase Triangle or Star connection (with and without neutral)
Phase L1
Phase L2
Phase L3
Neutral
Ground
F1
F2
F3
V
I < 150 mA
Load
R
R
R
R
R
R
R
R
R
Heatsink (accessory)
< 30V
1/L1
3/L2
5/L3
1
3
5
600V ac
50/60 Hz
2
4
6
A2-
6/T 3 ON
4/T 2
2/T 1
B1
5-32V dc
G Z 25/60-D-1
AC 51:25A
AC 53a: 5A
Alarm
A1+
B2
A1
A2
+
5-32 V dc
-
Digital
output
(*)
Controller
* Only in the version with option overtemperature alarm output
CONNECTION EXAMPLES - GZ with AC control (Models GZ-xx/xx-A-x)
Phase L1
Phase L2
Phase L3
Neutral
Ground
F1
F2
F3
( *)
I < 150 mA
V
Heatsink (accessory)
< 30V
1/L1
5/L3
3/L2
1
3
5
G Z 25/60-A-2
AC 51: 25A 600V ac
AC 53a: 5A 50/60 Hz
2/T 1
Out
Al
4/T 2
2
4
6
Alarm
B1
20-260
V ac/V dc
B2
nc
nc
A1
A2
6/T 3
On
ON/OF F
S witch
A1
A2
20........260 V ac/V dc
Fuse 3A (max)
* Only in the version with option alarm output
TYPE OF OPERATION
ALARM OPTION – DC INPUT: FUNCTIONAL DIAGRAM:
THERMAL PROTECTION ALARM
IN DC control
________________________________________________
ON LED (red)
_______________________________________________
Alarm LED (yellow)
________________________________________________
Load Current
______________________________________________
Alarm output ON
______________________________________________
T_SCR > 110°C
T_SCR < 110°C
ALARM OPTION – AC INPUT: FUNCTIONAL DIAGRAM:
THERMAL PROTECTION ALARM
IN AC control
_________________________________________________
ON LED (red)
_______________________________________________
Alarm
LED (yellow)
________________________________________________
Out-Al LED (red)
________________________________________________
Load Current
______________________________________________
Alarm output ON
______________________________________________
T_SCR > 110°C
T_SCR < 110°C
INTERRUPTED LOAD ALARM
IN AC control
_________________________________________________
ON LED (red)
_______________________________________________
Alarm
LED (yellow)
________________________________________________
Out-Al LED (red)
________________________________________________
Load Current
______________________________________________
Alarm output ON
_______________________________________________
Load failure
Load restored
TABLE OF TERMINALS AND CONDUCTORS
I/O control terminal
(A1, A2, B1, B2)
Model
Contact area
(LxD)
screw type
GZ 10...55A
6,3x9
M3
with DC control
GZ 10...55A
with AC control
Model
Plug connector
2/6 pins
Power terminal
(L1, L2, L3, T1, T2, T3)
Type of
pre-insulated
crimp
connector
Wire section
(*)/ tightening
torque
eye / fork / tip
min. 0.35 mm2
max. 2,5 mm2
0,6 Nm Max
Stripped wire
or tip
min. 0.25 mm2
max. 2,5 mm2
0,5 Nm Max
Contact area
(LxD)
screw type
Type of
pre-insulated
crimp
connector
Wire section
(*)/ tightening
torque
min. 1 mm2
max. 10 mm2
(tip)
12x12
M5
eye / fork / tip
min. 1 mm2
max. 16 mm2
(eye / fork)
1,5 - 2,2 Nm
Ground terminal (see note)
Contact area (LxD) screw type
Wire section (*)/ tightening torque
GZ 10...40A
Area: 7x12 mm2
Screw: self-threading 3.9x12 DIN7981
min. 1 mm2
max. 16 mm2
1,5-1,8 Nm
GZ 55A
Area: 12x12 mm2
Screw: M5
(*) The max. sections specified refer to unipolar copper wires
isolated in PVC.
Note: For the ground terminal, you have to use an eye wire
terminal.
(LxP) = width x depth [mm]
The minimum acceptable nominal section based on the
nominal currents of the power solid state units is given
below for copper conductors isolated in PVC, under continuous operating conditions and at 40°C ambient temperature according to standards CEI 44-5, CEI 17-11, IEC 408 in
accordance with EN60204-1
Nominal current
Nominal section cable on mm2
10A
2,5
25A
6
40A
10
55A
16
min. 1 mm2
max. 16 mm2
2 - 2,5 Nm
Terminal covers
If an eye terminal lug is used, the terminal covers can be
removed more easily by inserting a Phillips screwdriver
(max. width 3.5 mm) into the side slots.
With the point of the screwdriver, widen the side of the
cover and raise it.
Insert the screwdriver to facilitate opening of the cover
ACCESSORIES
A wide range of accessories is available heatsink, fuses and fuse holders , current transformer, thermostats.
To choose accessories, see the section “Solid state relays - Accessories”.
ORDER CODE
GZ
MODEL
/
-
-
GZ
1
NOMINAL CURRENT
10Aac
10
25Aac
25
25Aac (*)
40Aac
0
25B
2
40
55
55Aac
NOMINAL VOLTAGE
400Vac (only for 25A
models and only with type “D” input)
40
480Vac
48
600Vac
60
OPTIONS
None
Alarm output
thermal protection
Alarm output for interrupted load diagnostics
and thermal protection.
(Available ONLY with
type “A” input)
D
INPUT TYPE
5...32Vdc
A
20...260Vac/Vdc
(*) Version with high melt energy (I²t) short
circuit-proof using a specific circuit breaker.
Please contact GEFRAN personnel for information on availability of codes.
GEFRAN spa reserves the right to make any kind of design or functional modification at any moment without prior notice
•WARNINGS
WARNING: this symbol indicates danger.
Read the following warnings before installing, connecting or using the device:
if the solid state relay is used in applications with risk of injury to people, machines, or materials, auxiliary alarm devices MUST be employed. It
is also advisable to be able to check for tripping of alarms during normal operation;
• follow instructions precisely when connecting the heatsink;
• always use cables that are suitable for the voltage and current levels indicated in the technical specifications;
• 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:
• ground the heatsink connected to the power module;
• 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).
• to keep air in movement, we advise you to install a fan near the GZ group in the electrical panel containing the GZs.;
• size the heatsink adequately according to the indicated parameters.
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.
Conformity N° TC RU C-IT.AЛ32.B.00422
CSA
Conformity C/CSA/US CoFC no. 70051156
In conformity to ECC 2004/108/CE and 2006/95/CE and following modification with reference to standard EN 60947-4-3
(Low voltage equipment - AC Semiconductor starters and contactors)
UL
In Conformity with UL508 - File: E243386
GEFRAN spa
via Sebina, 74
25050 Provaglio d’Iseo (BS)
Tel. +39 030 9888.1 - fax +39 030 9839063
Internet: http://www.gefran.com
DTS_GZ_01-2016_ENG
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