Product description
PTC-relay for the monitoring of dry transformers. Alarm 1 with relay in closedcircuit current mode for preliminary warning, releases at over-temperature at PTC-set 1 and serves at the same time as functional monitoring. Alarm 2 in operating current mode. Thus no wiping signal occurs when switching on the supply voltage on. Additional terminals enable comfortable wiring from supply voltage to relays K1 and/or K2.
Changes from T221715 / T221716 to T221717 / T221718 (cURus, monitoring of sensors for short circuit an interrupt activatable, improved test function)
Functions
- 2 PTC resistor sets
- 2 output relays 1 change-over contact (co)/ 1 normally open contact (no)
- monitoring of sensors for short-circuit and break activatable
- TEST-button (delayed)
- LEDs for ON, alarm 1 and 2
- red LEDs for alarm 1 and alarm 2
- K-type housing
- Housing for mounting on DIN-rail 35 mm or wall-mount with screws M4
- alternative to foreign product type TS-01
