GEFRAN GZ 10/25/40/55 THREE-PHASE SOLID STATE RELAY
GEFRAN 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 overtemperature)
• 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
Order-no.: F27.760
Manufacturer: GEFRAN
SAGATRON-no.: F27.760
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 overtemperature)
• 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
Order-no.: F27.760
Manufacturer: GEFRAN
SAGATRON-no.: F27.760
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: 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/DC@260VAC/VDC
Additional fuse (3A max) shall be installed
on the control input circuit.
Outputs
GZ 10/...
Nominal current (Imax):
AC51: 3x10 A
AC53a: 3x2 A
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
Thermal features
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
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
Solid Sate Relay Dissipated Power
Calculation
Three-phase relay
Pd=3x1,4*IRMS [W]
IRMS= three-phase load current
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)
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
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)
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
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
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: 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/DC@260VAC/VDC
Additional fuse (3A max) shall be installed
on the control input circuit.
Outputs
GZ 10/...
Nominal current (Imax):
AC51: 3x10 A
AC53a: 3x2 A
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
Thermal features
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
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
Solid Sate Relay Dissipated Power
Calculation
Three-phase relay
Pd=3x1,4*IRMS [W]
IRMS= three-phase load current
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)
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
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)
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
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
FACEPLATE DESCRIPTION GZ with DC control (Models GZ-xx/xx-D-x)
FACEPLATE DESCRIPTION GZ with AC control (Models GZ-xx/xx-A-x)
FACEPLATE DESCRIPTION GZ with AC control (Models GZ-xx/xx-A-x)
TYPE OF OPERATION
TABLE OF TERMINALS AND CONDUCTORS
| Electricity | Operating voltage | Type of Control | Control | Special function | Type | Code |
| 3 x 10 A | To 400 Vac | Logic | 5-32 Vdc | Alarm output over temperature protection | GZ-10/400-0-1 | F27.760 |
| 3 x 25 A | To 480 Vac | Logic | 5-32 Vdc | Alarm output over temperature protection | GZ-25/480-0-1 | F27.765 |
| 3 x 40 A | To 480 Vac | Logic | 5-32 Vdc | Alarm output over temperature protection | GZ-40/480-0-1 | F27. 766 |
| 3 x 55 A | To 480 Vac | Logic | 5-32 Vdc | Alarm output over temperature protection | GZ-55/480-0-1 | F27. 767 |
| 3 x 55 A | To 600 Vac | Logic | 5-32 Vdc | Alarm output over temperature protection | GZ-55/600-0-1 | F27. 763 |
