gefran GTZ 25 Series Instruction manual

PROFILE
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.
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:
>800Vdc for models with Ue=400Vac
>1200Vdc 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 : GTZ 25:1100g
GTZ 40, 55:1350g
Control inputs
Voltage of command circuit (Uc):
5..32Vdc
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
GTZ 40/...
Nominal current (Imax):
AC51: 3x40 A
AC53a: 3x8 A
GTZ 55/...
Nominal current (Imax):
AC51: 3x55 A
AC53a: 3x15 A
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 EN60947-4-2 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

FACEPLATE DESCRIPTION
L1 : Phase 1 input
L2 : Phase 2 input
L3 : Phase 3 input
T1 : Phase 1 output
T2 : Phase 2 output
T3 : Phase 3 output
A1 : Control signal (+)
A2 : Control signal (-)
B1 : Alarm output (+) option
B2: Alarm output (-) option
Led1: Red led signal indicator
Led2: Yellow led (alarm overtemperature
junction)
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
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)
• Suitable for use in pollution degree 2
environmental
Thermal protection
Junction temperature is constantly moni-
tored 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.
Options
An optional thermal protection alarm out-
put is available. In this case, the alarm is
signaled with an output generated by a
solid state relay (max. 32 VAD/DC,
150mA, resistance ≤15Ωin alarm
state).
Power supply
Fan supply
(only for models GTZ 40/55A):
230Vac 14W (VEN90)
115Vac 14W (VEN91)
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.
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 heat-
sink: 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.
• Maximum surrounding air temperature
40°C (for UL).
• Open type equipment
Limits of use
• dissipation of thermal power of device
with restrictions on temperature of instal-
lation 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).
L1 L2 L3
T1 T2 T3
AC51: 40A 600Vac
AC53a: 8A 50/60Hz
GTZ 40/600-0-1
On
L1 L2 L3 A1+
T1T2 T3 A2-
Alarm B1
B2
A1
A2
5..32
Vdc
VEN-90fan:230Vac
Model
GTZ 25/400
GTZ 25/480
GTZ 40/480
GTZ 55/480
GTZ 40/600
GTZ 55/600
Imax, Ie (*)
[Arms]
3x25
3x25
3x40
3x55
3x40
3x55
Non-repetitive
overcurrent
t=20ms [A]
250
400
600
1150
600
1150
I2t
[A2s]
450
645
1010
6600
1010
6600
(*) Ie = Nominal current (Standard CEI EN 60947-4-3)
TECHNICAL DATA OF THE MAIN CIRCUIT

DIMENSIONS
DISSIPATION DIAGRAMS
Rated current curves based on room temperature.
L1 L2 L3
AC51: 25A 400Vac
AC53a: 5A 50/60Hz
GTZ 25/400-0-1
On
L1L2 L3 A1+
T1 T2 T3 A2-
Alarm B1
B2
A1
A2
5..32
Vdc
T1 T2 T3
L1 L2 L3
AC51: 40A 600Vac
AC53a: 8A 50/60Hz
GTZ 40/600-0-1
On
L1L2 L3 A1+
T1 T2 T3 A2-
Alarm B1
B2
A1
A2
5..32
Vdc
T1 T2 T3
VEN-90fan:230Vac
127mm 127mm
8
30mm
100mm50mm Max
80mm 8
30mm
TYPE OF OPERATION
Voltage logic output control and protection activation of overtemperature:
T1
T2
T3 On On t
t
t
t
Control input
LEDs indicator red red yellow yellow red
Voltage on load
Alarm output of
overtemperature
(optional) Heatsink temperature > 110°C (overtemperature detection)
10
20
30
40
50
60
70
I (A)
04080
T (°C)
25
40
55
Depth: 150mm

TABLE OF TERMINALS AND CONDUCTORS
Control terminal
(A1, B2, B1, B2)
Contact
area
(LxP)
screw type
6,3x9
M3
Type of
preisolated
terminal
eye /
fork /
tip
Section. *
conductor /
tightening torque
min. 0.35 mm2
max. 2,5 mm2
0,6 Nm Max
Contact
area
(LxP)
screw type
12x12
M5
Type of
preisolated
terminal
eye /
fork /
tip
Section. *
conductor /
tightening torque
min. 1 mm2
max. 10 mm2
(tip)
min. 1 mm2
max. 16 mm2
(eye/fork)
1,5 - 2,2 Nm
Power terminal
(L1, L2, L3, T1, T2, T3)
Model
25A
40A
55A
(*) 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
10A
25A
40A
55A
Nominal section
cable on mm2
2,5
6
10
16
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.
ACCESSORIES
A wide range of accessories is available heatsink, fuses and fuse holders , current transformer, supports to guide DIN, thermo-
stats. To choose accessories, see the section “Solid state relays - Accessories”.
Ground terminal
(see note)
Section. *
conductor /
tightening torque
min. 1 mm2
max. 16 mm2
1,5-1,8 Nm
min. 1 mm2
max. 16 mm2
2,5 - 2,5 Nm
Contact
area
(LxP)
screw type
12x12
self-tap-
ping screw
3.9x12
DIN7981
12x12
M5
Insert the screwdriver
to facilitate opening
of the cover
CONNECTION EXAMPLES
Three-phase Triangle or Star connection (with and without neutral)
RR
RR
RR
F1 F2 F3
5-32Vdc
I < 150mA
>110°C
< 30V
V
L1 L2 L3
T1 T2 T3
AC51: 25A 400Vac
AC53a: 5A 50/60Hz
GTZ 25/400-0-1
On
L1 L2 L3 A1+
T1T2 T3 A2-
Alarm B1
B2
A1
A2
5..32
Vdc
*
RRR
Phase R
Phase S
Phase T
Neutral
Ground
Load
Controller
Digital
input
* Only in the version with option overtemperature alarm output

ORDER CODE
MODEL
GTZ
NOMINAL VOLTAGE
400Vac
(only for models 25A) 400
480Vac 480
NOMINAL CURRENT
25Aac 25
40Aac 40
55Aac 55
GTZ
GEFRAN spa reserves the right to make any kind of design or functional modification at any moment without prior notice
Please contact GEFRAN personnel for information on availability of codes.
600Vac
(only for models ≥40A) 600 INPUT
5...32Vdc
0
OPTIONS
None
0
Alarm output
thermal protection
1
FAN (for mod. 40A and 55A)
Fan 80x80x40
230V 14W
VEN-90
Fan 80x80x40
115V 14W
VEN-91
/---

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.
•WARNINGS
GEFRAN spa
via Sebina, 74
25050 Provaglio d’Iseo (BS)
Tel. [phone] - fax [phone]
Internet: http://www.gefran.com
In conformity to ECC 2004/108/CE and 2006/95/CE and following modification with reference to standard EN 60947-4-2 (Low voltage
equipment - AC Semiconductor starters and contactors)
In Conformity with UL508 - File: E243386
DTS_GTZ_0709_ENG