GTZ 25 / 40 / 55
GTZ 25 / 40 / 55
THREE-PHASE SOLID STATE RELAYS WITH LOGIC CONTROL Vdc / Vac
Main features
• Control input from VDC/VAC logic signal
• 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
• Integrated SCR thermal protection with LED signal
• Optional alarm output (for interrupted load diagnostics or for SCR overtemperature
• 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 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” 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 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.
The device is sized for continuous operation at nominal current at room temperature of 40°C.
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: 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
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 : GTZ 25:1100g
GTZ 40, 55:1350g
Control inputs
DC INPUT (Type “D”):
Voltage of command circuit (Uc):
5..32Vdc
Activation voltage:
>4.5Vdc
Deactivation voltage:
<3Vdc
Max. input:
18mA @5Vdc - 22mA @32Vdc
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
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
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: 2000 slm
• Pollution level : 3
• Storage temperature: -20...85°C
• Class: A (industrial device)
• Suitable for use in pollution degree 2
environmental
Thermal protection
SCR 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.
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 fault
condition: control signal active but SCR
/ heatsink is in overtemperature (GTZ
thermal protection)
Option -2
(Thermal protection alarm output and
interrupted load).
Only for GTZ 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 fault
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 is in overtemperature (GTZ thermal
protection).
Power supply
Fan supply (only for models GTZ 40/55A):
230Vac 14W (VEN90)
115Vac 14W (VEN91)
24Vdc 4W (VEN92)
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.
FACEPLATE DESCRIPTION GTZ with DC control (Models GTZ-xx/xx-D-x)
L1
L2
L3
Alarm
L1 L2 L3 A1+
GTZ 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 GTZ with AC control (Models GTZ-xx/xx-A-x)
L2
L1
L3
Alarm
L1 L2 L3 A1+
B1
B2
G T 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)
• 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.
• 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 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).
TECHNICAL DATA OF THE MAIN CIRCUIT
Model
GTZ
GTZ
GTZ
GTZ
GTZ
GTZ
25/400
25/480
40/480
55/480
40/600
55/600
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
(*) Ie = Nominal current (Standard CEI EN 60947-4-3)
DIMENSIONS
Models: GTZ-25/xx-x-x (25A)
Models: GTZ-40/xx-x-x, GTZ-55/xx-x-x
127mm
L3 Alarm
L1 L2 L3 A1+
GTZ 25/400-0-1
AC51: 25A 400Vac
T1 T2 T3 A2AC53a: 5A 50/60Hz
T1
T2
T3 On
30mm
L2
B1
B2
A1
5..32
Vdc
A2
L1
L3 Alarm
L1 L2 L3 A1+
GTZ 40/600-0-1
VEN-90 fan:230Vac
AC51: 40A 600Vac T1 T2 T3 A2AC53a: 8A 50/60Hz
T1
Depth:
- Models GTZ-xx/xx-D-x : 150 mm
- Models GTZ-xx/xx-A-x : 158 mm
L2
T2
T3 On
B1
B2
A1
5..32
Vdc
100mm
L1
A2
50mm Max
80mm
30mm
8
8
127mm
(40 and 55A)
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 restored
Load failure
DISSIPATION DIAGRAMS
I (A)
70
60
55
50
40
40
Rated current curves based on room temperature.
30
25
20
10
0
40
80
T (ϒC)
CONNECTION EXAMPLES - GTZ with DC control (Models GTZ-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
< 30V
Load
1/L1
3/L2
5/L3
1
3
5
R
R
R
R
R
R
R
R
AC 51:25A
AC 53a: 5A
2/T 1
B1
5-32V dc
G T Z 25/60-D-1
R
Alarm
A1+
600V ac
50/60 Hz
2
4
A2-
6
A1
6/T 3 ON
4/T 2
B2
A2
+
5-32 V dc
Digital
output
(*)
-
Controller
* Only in the version with option overtemperature alarm output
CONNECTION EXAMPLES - GTZ with AC control (Models GTZ-xx/xx-A-x)
Phase L1
Phase L2
Phase L3
Neutral
Ground
F1
F2
F3
( *)
I < 150 mA
V
< 30V
1/L1
5/L3
3/L2
1
3
5
G T Z 25/60-A-2
AC 51: 25A 600Vac
AC 53a: 5A 50/60 Hz
2/T 1
* Only in the version with option alarm output
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
A1
A2
ON/OF F
S witch
20........260 V ac/V dc
TABLE OF TERMINALS AND CONDUCTORS
I/O Control terminal
(A1, A2, B1, B2)
Model
Contact area
(LxP)
screw type
GTZ 25...55A
6,3x9
M3
with DC control
GTZ 25...55A
with AC control
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
(LxP)
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
Model
Ground terminal (see note)
Contact area (LxD) screw type
Wire section (*)/ tightening torque
GTZ 25...40A
Area: 7x12 mm
Screw: self-threading 3.9x12 DIN7981
min. 1 mm2
max. 16 mm2
1,5-1,8 Nm
GTZ 55A
Area: 12x12 mm2
Screw: M5
2
(*) 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, supports to guide DIN, thermostats.
To choose accessories, see the section “Solid state relays - Accessories”.
ORDER CODE
GTZ
MODEL
25Aac
NOMINAL CURRENT
25Aac (*)
40Aac
/
-
-
FAN (for mod. 40A and 55A)
GTZ
VEN-90
Fan 80x80x40
230V 14W
25
VEN-91
Fan 80x80x40
115V 14W
40
VEN-92
Fan 80x80x25
24Vdc 4W
25B
55
55Aac
NOMINAL VOLTAGE
0
400Vac (only for 25A
models and only with type
“D” input)
40
480Vac
48
600Vac
60
(*) Version with high melt energy (I²t) short circuit-proof using
a specific circuit breaker
OPTIONS
None
1
Alarm output
thermal protection
2
Alarm output for interrupted load diagnostics
and thermal protection.
(Available ONLY with
type “A” input)
D
INPUT
5...32Vdc
A
20 ... 260 Vac/Vdc
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.
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)
“
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_GTZ_04-2014_ENG
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