Datasheet

21
ST-D MT
• Self-powered by the voltage to be monitored (S, ST and ST-D).
• Visual indication of tripping cause.
• DIN rail mounting.
Phase and temperature relay Lift temperature control relay Thermistor protection relay
• To protect 3-phase devices
• Suitable for motors with built-in PTC sensors in
applications such as elevators, cranes, hoists and
similar installations.
• Sensitive to incorrect phase sequence.
• Monitoring of short-circuit and broken wire in
PTC circuit.
• Two output relays, one for phase imbalance,
phase loss and phase sequence and the other for
over temperature.
• Controls the temperature of the lift motor room
(relay + external module ODT2) or the temperature
inside the switchboard for those lifts without motor
room (relay + internal sensor INT2).
• Designed according to the EN 81-1 standard and
complying with the European Union Directive for
Lifts (95/16/CE).
• Two adjustable temperature thresholds.
• Controls the temperature by the use of thermistors
(PTC sensors)
• Detects short-circuit (< 25Ω) and breakage in the
circuit of sensors.
• Protects the motors against over temperature
caused by excess ambient temperature,
insufficient ventilation or cooling, etc.
• Applicable in transformers and other machines.
MT2
–
230 Vac ( Aux.supply)
12039
50/60 Hz
According to the PTC installed
-
50/60 Hz
Maximum temperature setting from 40°C to 55°C
Minimum temperature setting from -5°C to 5°C
2°C
50/60 Hz
-
100Ω / 1500Ω - 2300Ω
< 0,1 s
Automatic
3 LED’s: ON + +
2 relays ( + ) with 1 NO
I
th
: 5A; AC15 - 250V - 2A; DC13 - 30V - 2A
2,5 mm
2
, No. 22 - 12AWG / 20Ncm, 1.8 LB - IN
7,5 VA (230 Vac) - 11 VA (400 Vac)
IP20 / 0,13 kg
-30°C +70°C / -15°C +60°C
-
-
Automatic
2 LED’s: ON +
1 relay with 1 change over NO - NC
I
th
: 5A; AC15 - 250V - 2A; DC13 - 30V - 2A
2,5 mm
2
, No. 22 - 12AWG / 20Ncm, 1.8 LB - IN
5 VA (230 Vac) - 0,5 W (24 Vdc)
IP20 / 0,11 kg
-30°C +70°C / -15°C +60°C
25Ω / 1500Ω - 3600Ω. Reset1800Ω
< 0,1s
Automatic
3 LED’s: ON + +
1 relay with 1 NO + 1 NC
I
th
: 5A; AC15 - 250V - 2A; DC13 - 30V - 2A
2,5 mm
2
, No. 22 - 12AWG / 20Ncm, 1.8 LB - IN
6 VA (230 Vac)
IP20 / 0,12 kg
-30°C +70°C / -15°C +60°C
Phase loss: with resistive loads it trips when a phase loss occurs. With
three-phase motors it trips if the voltage regenerated by the motor
is lower than 60% of the main voltage. Phase inbalance > 40%
Disparado
o Us=0
Normal
RST RTS RST
PTC
RELÉS
3
RST
11-14
21-24
T
RS
+
t
o
Disparado
o Us=0
12
11
14 12
11
14
Normal
contacto
11-14
Tensión
auxiliar
Tmáx
Relé
Tmín
Temperatura
contacto
11-12
PTC Ω
0 Ω
30 s30 s
+
t
o
Normal
9597
9698
9597
9698
ST2-D ST4-D
3 x 230 V 3 x 400 V
Self-powered (3-phase)
12002 12013
T2 ODT2 INT2
–––
230 Vac (Aux) 24 Vac, dc – –
12051 12052 12037 12036
+
+
ODT2
External module
T2
INT2
Internal sensor
T
RELAY
Tripped
or Us=0
Tripped
or Us=0
Tripped
or Us=0
RELAYS
contact
11-14
contact
11-14
Aux.
supply
Tmax
Relay
Tmin
Temperature
ingles interior 2008:ingles interior 2005 13/5/08 17:06 Página 21