GTZ 25 / 40 / 55
GTZ 25 / 40 / 55
THREE-PHASE SOLID STATE RELAYS WITH LOGIC CONTROL
Main features
• 3-phase alternating current solid state
relay with integrated hestsink
• Zero crossing switching
• 3-phase nominal current
3x25/40/55A
• Nominal voltage up to 600VCArms
Control range:5...32Vdc
• Optoinsulation (input/output)
4000Vrms
• Integrated overvoltage suppressor
• Non-repetitive voltage up to 1200Vp
• Component selection to operate at
max. declared current with ≤ 40°C
temperature
• DIN bar mounting with fast clip-on
• In Conformity with EN60947-4-3
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
TECHNICAL DATA
Control inputs
3-phase "zero crossing" power solid state
unit for control of resistive and inductive
loads, complete with aluminum heatsink
and DIN guide connection. 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), 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. The device is sized
for continuous operation at nominal
current in a 40°C installation
environment.
All versions are protected against
overvoltages and against junction
overtemperature, with signal LEDs and
(optional) solid state alarm output.
The device is supplied complete with
covers to protect against direct contacts
(covers are removable for wiring).
Accessories available: fuses, fuse
holders, support for panel mounting,
thermostats and fans.
General features
Voltage of command circuit (Uc):
5..32Vdc
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:
>800Vdc for models with Ue=400Vac
>1200Vdc for models with Ue=480Vac,
Ue=600Vac
Activation voltage: >4.5Vdc
Deactivation voltage:<3Vdc
Max. input:
18mA @5Vdc - 22mA @32Vdc
Max. reverse voltage: 36Vdc
Outputs
GTZ 25/...
Nominal current (Imax):
AC51: 3x25 A
AC53a: 3x5 A (available from 2005)
Uninterrupted nominal service.
Critical dV/dt OFF-state:
500V/µs for models with Ue=400Vac
1000V/µs for models with Ue=480Vac,
Ue=600Vac
GTZ 40/...
Nominal current (Imax):
AC51: 3x40 A
AC53a: 3x8 A (available from 2005)
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 : GTZ 25:1100g
GTZ 40, 55:1350g
GTZ 55/...
Nominal current (Imax):
AC51: 3x55 A
AC53a: 3x15 A (available from 2005)
Options
An optional thermal protection alarm output is available. In this case, the alarm is
signaled with an output generated by a
solid state relay (max. 32 VAD/DC,
150mA, resistance ≤ 15Ω in alarm
state).
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
Power supply
Fan supply
(only for models GTZ 40/55A):
230Vac 14W (VEN90)
115Vac 14W (VEN91)
Ambient conditions
• Working temperature:
-20°C...80°C
• Max. relative humidity: 50% to 40°C
• Max. installation altitude: 1000 slm
• Pollution level : 3
• Storage temperature: -20...85°C
• Class: A (industrial device)
Thermal protection
Junction temperature is constantly monitored inside the device. If the maximum
temperature limit is exceeded (T=110°C),
current to the load is interrupted and the
yellow signal LED lights up.
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.
For maximum reliability, the device
MUST be installed correctly in the panel
in order to have adequate heat exchange
between the heatsink and the
surrounding air under conditions of
natural convection.
TECHNICAL DATA OF THE MAIN CIRCUIT
Model
GTZ
GTZ
GTZ
GTZ
GTZ
GTZ
Imax, Ie (*)
[Arms]
Non-repetitive
overcurrent
t=20ms [A]
I2t
[A2s]
3x25
3x25
3x40
3x55
3x40
3x55
250
400
600
1150
600
1150
450
645
1010
6600
1010
6600
25/400
25/480
40/480
55/480
40/600
55/600
Mount it vertically (max. 10 inclination
from the vertical axis)
• Vertical distance between a heatsink
and the panel wall >100mm
• Horizontal distance between a heatsink
and the panel wall: 20mm at least
• Vertical distance between two heatsink:
300mm at least.
• Horizontal distance between two heatsink: 20mm. at least
Check that cable raceways do not reduce
these distances; should it happen, mount
the GTZ overhanging from the panel, so
that the air can flow vertically on the
heatsink without obstables.
Limits of use
• dissipation of thermal power of device
with restrictions on temperature of installation site.
• requires exchange with outside air
or an air conditioner to transfer
dissipated power outside the panel.
• installation requirements (distances
between devices to guarantee dissipation
under conditions of natural convection)
• 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).
(*) Ie = Nominal current (Standard CEI EN 60947-4-3)
FACEPLATE DESCRIPTION
L1
L2
L3
Alarm
L1 L2 L3 A1+
B2
A1
GTZ 40/600-0-1
VEN-90 fan:230Vac
AC51: 40A
AC53a: 8A
T1
600Vac
50/60Hz
B1
T1 T2 T3 A2-
T2
T3 On
5..32
Vdc
A2
L1 :
L2 :
L3 :
T1 :
T2 :
T3 :
A1 :
A2 :
B1 :
B2:
Led1:
Led2:
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)
DIMENSIONS
127mm
L2
L3 Alarm
B1
L1 L2 L3 A1+
T2
A2
T3 On
L2
L3 Alarm
B1
L1 L2 L3 A1+
5..32
Vdc
AC51: 25A 400Vac
T1 T2 T3 A2AC53a: 5A 50/60Hz
T1
L1
B2
A1
GTZ 25/400-0-1
100mm
80mm
L1
30mm
30mm
8
8
127mm
GTZ 40/600-0-1
VEN-90 fan:230Vac
B2
A1
AC51: 40A 600Vac T1 T2 T3 A2AC53a: 8A 50/60Hz
5..32
Vdc
T2
T3 On
A2
50mm Max
T1
Depth: 150mm
TYPE OF OPERATION
Voltage logic output control and protection activation of overtemperature:
Control input
red
red
yellow
yellow
red
t
LEDs indicator
Voltage on load
t
T1
T2
T3
t
On
Alarm output of
overtemperature
(optional)
Heatsink temperature > 110°C
On
(overtemperature detection)
DISSIPATION DIAGRAMS
Rated current curves based on room temperature.
I (A)
70
60
55
50
40
40
30
25
20
10
0
40
80 T (°C)
t
CONNECTION EXAMPLES
Three-phase Triangle or Star connection (with and without neutral)
Phase R
Phase S
Phase T
Neutral
Ground
F1
F2
F3
*
I < 150mA
V
< 30V
>110°C
Load
R
R R R
R
L1
L3
Alarm
L1 L2 L3 A1+
R
R
AC51: 25A
AC53a: 5A
T1
400Vac
50/60Hz
B1
B2
A1
GTZ 25/400-0-1
R
R
L2
5..32
Vdc
T1 T2 T3 A2-
T2
T3 On
5-32Vdc
A2
Digital
input
Controller
* Only in the version with option overtemperature alarm output
TABLE OF TERMINALS AND CONDUCTORS
Model
25A
Contact
area
(LxP)
screw type
Control terminal
(A1, B2, B1, B2)
Type of
Section. *
preisolated
conductor /
terminal
tightening torque
6,3x9
M3
eye /
fork /
tip
Ground terminal
Power terminal
(see note)
(L1, L2, L3, T1, T2, T3)
Type of
Section. *
Contact
Contact
Section. *
preisolated
conductor /
area
area
conductor /
terminal
tightening torque
(LxP)
(LxP)
tightening torque
screw type
screw type
min. 0.35 mm2
max. 2,5 mm2
0,6 Nm Max
12x12
M5
40A
eye /
fork /
tip
min. 1 mm2
max. 10 mm2
(tip)
min. 1 mm2
max. 16 mm2
(eye/fork)
55A
1,5 - 2,2 Nm
(*) 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]
12x12
self-tapping screw
3.9x12
DIN7981
12x12
M5
min. 1 mm2
max. 16 mm2
1,5-1,8 Nm
min. 1 mm2
max. 16 mm2
2,5 - 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.
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
10A
25A
40A
55A
Nominal section
cable on mm2
2,5
6
10
16
Insert the screwdriver
to facilitate opening
of the cover
ACCESSORIES
A wide range of accessories is available heatsink, fuses and fuse holders , current transformer, supports to guide DIN, thermostats. To choose accessories, see the section “Solid state relays - Accessories”.
ORDER CODE
GTZ
/
-
-
FAN (for mod. 40A and 55A)
MODEL
GTZ
VEN-90
Fan 80x80x40
230V 14W
25
40
55
VEN-91
Fan 80x80x40
115V 14W
NOMINAL CURRENT
25Aac
40Aac
55Aac
OPTIONS
0
None
1
Alarm output
thermal protection
NOMINAL VOLTAGE
400Vac
(only for models 25A)
400
480Vac
480
600Vac
(only for models ≥ 40A)
600
INPUT
0
5...32Vdc
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 power solid state unit 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 GTZ group in the electrical panel containing the GTZs.;
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.
This device conforms to European Union Directive 89/336/CEE and 73/23/CEE as amended with reference to product:
CEI-EN 60947-4-3 (Low voltage switchgear and controlgear - Contactors and Motor-starters)
GEFRAN spa
via Sebina, 74
25050 Provaglio d’Iseo (BS)
Tel. +39 030 9888.1 - fax +39 030 9839063
Internet: http://www.gefran.com
cod. GTZ- 09/05
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