Technical Data - gefran GTD 25A Manuel D'utilisation

Main applications
• Plastics extrusion lines
and injection moulding
machines
• Packing and packaging
machines
• Polymerization plant for
synthetic fibre production
• Chemical and
pharmaceutical industries
• Industrial electric ovens
• Food processing plants
PROFILE
The GTD series of power solid state
relays (zero crossing type) are solid state
actuators with built-in heatsink, heater
break diagnostics (Hb function),
selectable current scale, and adjustable
setpoint.
Junction overheat protection is available
as an option.
An alarm signal is provided in output.
The GTD series of power solid state
relays are offered with currents of 25A
and 40A, rated voltage 480 VAC, and Vdc
input control signal.
Voltage transistors are protected by MOV
(varistor).
All models are designed to guarantee
performance at rated currents, with
continuous power conduction at 40°C.
See the dissipation curves for other
performance conditions.
Thanks to their high performance, they
are appropriate for very short switching
times, with millions of operations without
wear on components.
Various accessories are available, such
as a front panel attachment, fuses and
fuse holders.
GTD 25 / 40A
POWER SOLID STATE RELAYS WITH LOGIC CONTROL AND
DIAGNOSTICS

TECHNICAL DATA

General features
Category of use: AC1
Nominal voltage:
480Vac (max. range 48...530Vac)
Nominal frequency: 50/60Hz
Non-repetitive voltage: 1200Vac
Zero switching voltage: < 20V
Activation time: =1/2 cycle
Deactivation time: =1/2 cycle
Voltage drop at nominal current:
= 1,4Vrms
Power factor = 1
Control inputs
Max. input: < 5mA@30V
Max. reverse voltage: 36Vdc
Control voltage: 5...30Vdc
Activation voltage: > 4,25Vdc
Deactivation voltage: < 3Vdc
Power supply
Vs = 20...30Vdc ±10%
Input 30mA at 30Vdc
Outputs
GTD 25
Nominal current: 25A@40°C in
continuous service
Non-repetitive overcurrent t=20ms: 400A
I t for blowout: 645A
2
dV/dt critical with output deactivated:
1000V/µs
Main features
• AC power solid state relays with logic
• Switching at voltage zero crossing
• Built-in heatsink
• Rated current: 25Arms, 40Arms
• Non-repetitive voltage: 1200 Vp
• Rated voltage: up to 530VCArms
• Input control range: 5...30 Vdc
• Optical isolation: 4000Vrms
• Built-in HB diagnostics (partial heater
• Overheat protection (optional)
• 2-color control signal LED in
• On-board MOV (varistor)
• DIN rail or panel mounting (optional)
GTD 40
Nominal current: 40A@40°C in
continuous service
Non-repetitive overcurrent t=20ms: 600A
I t for blowout: 1010A
2
dV/dt critical with output deactivated:
1000V/µs
DIAGNOSTICS
Heater break Alarm (Hb)
Checks load by measuring current inside
the device.
Current full scale is selectable: 5, 10, 15,
20, 25, 30, 35, 40A.
The alarm setpoint can be set at 10 levels
within the selected scale.
Overtemperature alarm
Provides protection against junction
overtemperature in "or" with the Hb
alarm.
Alarm output
The alarm output is PNP type (not
protected against short circuit)
(output voltage = Vs - 0.7Vdc,
Rout = 82Ω, Iout max. = 20mA)
The alarm is signaled by a yellow LED.
Isolation
s
2
Rated isolation voltage for power control/
output: 4000VACrms
signal control
(input/output)
break, junction in short circuit)
input/alarm state
s
2
(optional)
9