Gefran GQ 15 A, GQ 25 A, GQ 50 A, GQ 90 A Data Sheet

Main applications

• Packaging Machinery

• Thermoforming

• Plastic extrusion lines

• Industrial ovens and

furnaces

• Control application with
high switching speed

GQ 15 / 25 / 50 / 90 A

SINGLE PHASE SOLID STATE RELAYS

Main features

• Alternating current solid state relay

• Zero crossing switching

• Copper/semiconductor coupling

technology

• 15, 25, 50 and 90Arms nominal
current

• Non-repetitive voltage: up to
1600Vp

• Nominal Voltage: up to 600 Vac

• Control voltage : 3...32Vcc and

20...260Vac/Vcc with connector

• Isolation ((input-output)
4000Vrms

• Red LED drive active signal

• Internal MOV (option)

PROFILE

Zero crossing relay with antiparallel thy­ristor output is the most used solid state
relay in industrial applications.
In fact, it can be used for resistive, inducti­ve and capacity loads.
“Zero crossing” relay is energised when
voltage meets the zero point and disener­gised when current meets the zero point,
depending on the signal control on the
input circuit.
This relay has been designed to stand
high-value transitory applications .
When the relay has to stand high currents
for a long period, it is necessary to grant a
proper dissipation and an adequate elec­trical connection between relay terminals
and the load.
Varistors, fuses, thermostats and fans are
available as fittings.
Use the relay with an opportune heatsink
(see section accessories).

TECHNICAL DATA

General features

Rated frequency: 45...65Hz
Activation time:

GQ...-D- ≤1/2 cicle GQ...-A- ≤1 cicle

Deactivation time:

GQ...-D- ≤1/2 cicle GQ...-A- ≤1 cicle
Power factor: ≥0,5
Protection level: IP20

• U

= 4,8KV

imp

• Ui = 660V

• Overload current profile = 10

• Conditional short circuit current = 5KA
with type 1 coordination and respective
fuse protections.
GQ15/25 fuse type aM6A
GQ50 fuse type aM16A
GQ90 fuse type aM20A

GQ...- 24-

Nominal voltage: 24...230 Vac
(max range 20...253Vac)
Non-repetitive voltage: ≥ 600 Vp
Zero switching voltage: ≤ 20V

GQ...- 48-

Nominal voltage: 48...480 Vac
(max range 40...528Vac)
Non-repetitive voltage: ≥ 1200 Vp
Zero switching voltage: ≤ 40 V

GQ...- 60-

Nominal voltage: 48...600 Vac
(max range 40...660Vac)
Non-repetitive voltage: ≥ 1200 Vp
Zero switching voltage: ≤ 40V

Control input A1 - A2

GQ...-D-

Control voltage: 3...32Vcc
Turn ON voltage: ≥ 2,7Vc.c
Turn OFF voltage: ≤ 1Vcc
Reverse voltage: < 36Vcc
Consumption: ≤ 13mA@32V

GQ...-A-

Control voltage: 20...260Vac/Vcc
Turn ON voltage: ≥ 15Vac/Vcc
Turn OFF voltage: ≤ 6Vac/Vcc
Consumption: ≤ 8mAac/cc@260Vac/Vcc
Series connection of control inputs: max.
no. GQ...-A in series = Vcontrol -10% / 20

Output L1 - T1

GQ - 15 -

Nominal current: AC51: 15Arms;
AC53A (*): 3Arms
Min load current: 0,1Arms
Repetitive overcurrent t=1 s: ≤ 35Arms
Non-repetitive overcurrent t=20ms:200Ap
Current drop at nominal voltage and fre­quencies: ≤ 8mArms

2

I

t for fusing t=1-10ms: ≤ 200A2s

Critical dl/dt: ≥ 100A/µs

Voltage drop at nominal current: ≤1,45Vrms
Critical dV/dt off-state: ≥ 1000V/µs
Ith = 15A

GQ - 25 -

Nominal current :
AC51: 25Arms; AC53A (*): 5Arms
Min load current: 0,3Arms
Repetitive overcurrent t=1 s: ≤ 60Arms
Non-repetitive overcurrent t=20ms: 300Ap
Current drop at nominal voltage and fre­quencies: ≤ 8 mArms

2

I

t for fusing t=1-10ms: ≤ 450A2s
Critical dl/dt: ≥ 100A/µs
Voltage drop at nominal current: ≤ 1,45Vrms
Critical dV/dt off-state:≥ 1000V/µs
Ith = 25A

GQ - 50 -

Nominal current :
AC51: 50Arms; AC53A (*): 15Arms
Min load current: 0,3Arms
Repetitive overcurrent t=1 s: ≤ 125Arms
Non-repetitive overcurrent t=20ms: 600Ap
Current drop at nominal voltage and fre­quencies: ≤ 8mArms

2

I

t for fusing t=1-10ms: ≤ 1800A2s
Critical dl/dt: ≥ 100A/µs
Voltage drop at nominal current: ≤1,35Vrms
Critical dV/dt off-state: ≥ 1000V/µs
Ith = 50A

GQ - 50B -

(with high I

2

t fusing current)
Nominal current : AC51: 50Arms;
AC53A (*): 18Arms
Min load current: 0,4Arms
Repetitive overcurrent t=1 s: ≤ 140Arms
Non-repetitive overcurrent t=20ms: 1150Ap
Current drop at nominal voltage and fre­quencies: ≤ 10mArms

2

I

t for fusing t=1-10ms: ≤ 6600A2s
Critical dl/dt: ≥ 100A/µs
Voltage drop at nominal current: ≤1,2Vrms
Critical dV/dt off-state: ≥ 1000V/µs
Ith = 50A

GQ - 90 -

Nominal current AC51: 90Arms;
AC53A (*): 20Arms
Min load current: 0,5Arms
Repetitive overcurrent t=1 s: ≤ 150Arms
Non-repetitive overcurrent t=20ms: 1500 Ap
Current drop at nominal voltage and fre­quencies: ≤ 10mArms

2

I

t for fusing t=1-10ms: ≤ 11200A2s
Critical dl/dt: ≥ 100A/µs
Voltage drop at nominal current:≤ 1,35Vrms
Critical dV/dt off-state: ≥ 1000V/µs
Ith = 90A

(*) Only versions: GQ-XX-24-X-1
GQ-XX-48-X-1

Insulation

Nominal insulation voltage Input/output:
≥ 4000 Vac
Nominal insulation voltage Output/case:
≥ 2500 Vac
Insulation resistance Input/output: ≥ 10
Insulation resistance Output/case: ≥ 10

10

Ω

10

Ω
Insulation capacity Input/Output: ≤ 8pF
Insulation capacity Output/case: ≤ 100pF

Ambient conditions

• Ambient temeparure: -25...+80°C

• Storage Temperature: -55...+100°C

• Maximum relative humidity: 50% a 40°C

• Maximum installation height: 2000 slm

• Pollution level: 2

Thermal features

GQ - XX -

Junction Temperature: ≤ 125°C
Rth junction/ambient: ≤ 12 K/W

GQ - 15 - / GQ - 25 -

Rth junction/case: ≤ 1,25 K/W

GQ - 50 -

Rth junction/case: ≤ 0,65 K/W

GQ - 50B -

Rth junction/case: ≤ 0,33 K/W

GQ - 90 -

Rth junction/case: ≤ 0,3 K/W

Solid State Relay Dissipated Power
Calculation

Single phase state relay
Pd GQ .. 15/25 = 1,45 . Irms [W]
Pd GQ .. 50/90 = 1,35 . Irms [W]
Pd GQ .. 50B = 1,2 . Irms [W]
IRMS = single-phase load current

Heatsink Thermal Resistance
Calculation

Rth = (90°C - T.amb. max) / Pd
where Pd = dissipated power
Max. amb. T = max air temperature inside
the electrical cabinet.
Use a heatsink with thermal resistance
inferior to the calculated one (Rth).

Installation notes

The device must be protected by a high
speed fuse (accessory).
Applications with power solid state relays
must also have a switch to isolate the
power line.
Protect the solid state relay against overhe­ating by using a heatsink (accessory).
The heatsink must be sized according to
room temperature and load current (see
technical data).
Heatsink installation procedure:
spread 1 gram of thermoconductive silico­ne paste (we recommend DOW CORNING

340) on the dissipative metal surfaces of
the module.
The surfaces must be clean and the ther­moconductive paste must not contain any
impurities. As alternative it is also possi­ble to use the slide SIL-GQ available as
accessory.

DIMENSIONS

Dimensions in mm, (inc)

*

30.5 (1.2) with option “command signal Terminal” = 4

*

(*) See installation notes

*Apply thermoconductive

paste

Raise the guard to access the
fastening hole or the terminals