GZ 10 / 25 / 40 / 55 THREE-PHASE SOLID STATE RELAY WITH LOGIC CONTROL Vdc / Vac
Overview
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), 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.
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.
Description
Zero-voltage switching.
Current range: 10A to 55A
- 3-phase alternating current solid state relay
- Zero crossing switching
- 3-phase nominal current 3x10/25/40/55A
- Nominal voltage up to 600VCArms
- Control range: 5...32Vdc
- 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
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
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: 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
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
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)
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