- The MSF 220 V is particularly suitable for the temperature monitoring at dry transformers. 3 PTC-circuits with different nominal response temperatures (NRT) can be connected to this unit, one for controlling a fan (forced cooling) and two for alarms. Each PTC-circuit is monitored for break and short circuit. This reduces the probability of false alarms.
+ 3 PTC-circuits
+ MSF 220 VU for universal supply voltage AC/DC 24-240 V
+ intelligent control of fan (relay K0, 1 normally-open contact)
+ ALARM 1 in closed-circuit current mode (relay K1, 1 change-over contact) for pre alarm. Signals also error in any sensor and interruption of supply voltage.
+ ALARM 2 in operation current mode (relay K2, 1 changeover contact). No signal when switching on and off the supply voltage.
+ all output relays potentially separated from each other.
+ monitoring of sensor lines
+ TEST-button (stop possible before ALARM 2)
+ Simple testing with disconnectable monitoring of break and short circuit (for 10 minutes).
+ LEDs for ON, sensor error, Fan, ALARM 1 and ALARM 2
+ UL recognized component
+ plug-in terminals
+ housing for mounting on DIN-rail or wall-mount
+ mounting height 55 mm
Thông số kỹ thuật
- Rated supply voltage Us.......AC 220 - 240 V ± 10 %, 50/60 Hz ≤ 3 VA; AC/DC 24 V, ± 15 %, < 3 VA
- Connectable PTC resistors.......3 x 1...6 PTC according to DIN 44081 or 44082
- Switching point.......< 4000 Ω
- Output relay.......2 x 1 change-over-contact (co), 1 normally-open contact (no)
- Type of contact.......Type 2 (see general technical information)
- Test conditions.......see general technical information
- Rated ambient temperature.......-20...+55 °C
- Dimensions h x w x d.......Design V4: 90 x 70 x 58 [mm]
- Attachment.......on 35 mm DIN rail according to EN 60 715 or screws M4
- Protection Housing/Terminals.......IP30/IP20
- Weight.......approx. 320 g