02/11/2015 www.crouzet.com DIN Rail Mount 35 mm HT81 -2 Part number 84874120 Control relay designed to monitor the temperature in lift machine rooms in accordance with standard EN81 PT100 input Adjustable control between 5C and 40C Independent setting of high and low thresholds Built-in phase control option Part numbers Function Nominal voltage (V) 3-phase control Type 84874120 HT81 -2 Under/Overtemperature window mode 24240VAC/DC No Specifications Supply Supply voltage Un 24V240VAC/DC Voltage supply tolerance -15%, + 10% AC -10%, +10% DC Operating range 20,4V264VAC 21,6V264VDC Polarity with DC voltage No AC supply voltage frequency 50 / 60Hz 10% Power consumption at Un 3.5 VA in AC/0.6 W in DC Immunity from micro power cuts 10 ms Inputs and measuring circuit Low temperature measurement selection -1C, 1C, 3C, 5C, 7C, 9C, 11C High temperature measurement selection 34C, 36C, 38C, 40C, 42C, 44C, 46C Temperature measurement input resistance 1330 Fixed hysteresis 2C Display precision 2% Max. length of Pt100 probe cables 10 m Timing Delay on thresold crossing 110s Display precision 0, + 10% Reset time 8 s Delay on pick-up 200 ms Maximum response time on disappearance of fault 3.5 s for a temperature fault 500 ms for a phase fault Output Type of contacts No cadmium Maximum breaking voltage 250 V AC/DC Max. breaking current 5 A AC/DC Min. breaking current 10mA / 5 V DC 4 Electrical life (number of operations) 1 x 10 Breaking capacity (resistive) 1250 VA AC Maximum rate 360 operations/hour at full load Operating categories acc. to IEC/EN 60947-5-1 AC 12, AC 13, AC 14, AC 15, DC 12, DC 13, DC 14 6 Mechanical life (operations) 30 x 10 Insulation Insulation coordination (IEC/EN 60664-1) Overvoltage category III: degree of pollution 3 Rated impulse withstand voltage (IEC/EN 60664-1) 4 kV (1,2 / 50 s) Dielectric strength (IEC/EN 60664-1) 2 kV AC 50Hz 1 min. Insulation resistance (IEC/EN 60664-1) > 100 M- 500 V DC General characteristics Display power supply Green LED Temperature indication Yellow LED (HWT81) Phas indication Yellow LED (HWT81) High threshold relay Yellow LED (HT81, HT81-2) Low threshold relay Yellow LED (HT81, HT81-2) Casing 35 mm Mounting On 35 mm symmetrical DIN rail, IEC/EN 60715 Unless otherwise specified, the characteristics given are applicable to all or part of the product range selected02/11/2015 www.crouzet.com Mounting position All positions Material: enclosure plastic type VO to UL94 standard Incandescent wire test according to IEC 60695-2-11 & NF EN 60695-2-11 Protection (IEC/EN 60529) Terminal block: IP 20 IP 30 casing Weight 121 g 2 2 2 Connecting capacity IEC/EN 60947-1 Rigid: 1 x 4 - 2 x 2.5 mm 1 x 11 AWG - 2 x 14 AWG 2 2 2 Flexible with ferrules: 1 x 2.5 - 2 x 1.5 mm 1 x 14 AWG - 2 x 16 AWG Max. tightening torques IEC/EN 60947-1 0,61Nm/5,38,8Lbf.In Operating temperature IEC/EN 60068-2 -20+50C Storage temperature IEC/EN 60068-2 -40+70C Humidity IEC/EN 60068-2-30 2 x 24 hr cycle 95% RH max. without condensation 55C Vibrations according to IEC/EN60068-2-6 10150Hz,A=0.035mm Shocks IEC/EN 60068-2-6 5 g Standards Marking CE (LVD) 73/23/EEC - EMC 89/336/EEC Product standard NF EN 60255-6 / IEC 60255-6 / UL 508 / CSA C22.2 N14 / EN 81-1 Electromagnetic compatibility (EMC) Immunity EN 61000-6-2/IEC 61000-6-2 Emission EN 61000-6-4/EN 61000-6-3 IEC 61000-6-4/IEC 61000-6-3 Emission EN 55022 class B Certifications UL, CSA, GL Conformity with environmental directives RoHS, WEEE Inputs and measuring circuit Phase control voltage range - Phase failure detection with regeneration - Frequency of measured signal - Relay drop-out voltage (phase failure) - 3-phase input resistors - Timing Maximum response time in the event of a 3-phase fault - (ms) Output Type of output 2 single pole NO relay Insulation Galvanic isolation of power supply/measurement Yes, between power supply and PT100 (transformer) Yes, between power supply and output (transformer and relay) Yes, between PT100 and output (relay) Nominal insulation voltage 250 V Comments Accessories Description Code Removable sealable cover for 35 mm casing 84800001 Principles Overview Temperature control relays for lift machine rooms are designed for monitoring the temperature between 5C and 40C according to standard EN81. Principles Unless otherwise specified, the characteristics given are applicable to all or part of the product range selected