23/06/2014 www.crouzet.com Temperature control relay for lift service rooms - according to EN81 - 35 mm HWT81 Part number 84874130 Control relay designed to monitor the temperature in lift machine rooms in accordance with standard EN81 PT100 input Adjustable control between 5 C and 40 C Independent setting of high and low thresholds Built-in phase control option Part numbers 84874130 Type Function Nominal voltage (V) 3-phase control HWT81 Under/Overtemperature window mode + phase sequence and failure 24 240 V AC/DC 3 x 208 480 V AC Specifications Supply Supply voltage Un Voltage supply tolerance Operating range Polarity with DC voltage AC supply voltage frequency Power consumption at Un Immunity from micro power cuts 24 V 240 V AC/DC -15 %, + 10 % AC -10 %, +10 % DC 20,4 V 264 V AC 21,6 V 264 V DC No 50 / 60 Hz 10 % 3.5 VA in AC/0.6 W in DC 10 ms Inputs and measuring circuit Low temperature measurement selection High temperature measurement selection Temperature measurement input resistance Fixed hysteresis Display precision Max. length of Pt100 probe cables -1 C, 1 C, 3 C, 5 C, 7 C, 9 C, 11 C 34 C, 36 C, 38 C, 40 C, 42 C, 44 C, 46 C 1330 2 C 2% 10 m Timing Delay on thresold crossing Display precision Reset time Delay on pick-up Maximum response time on disappearance of fault 1 10 s 0, + 10 % 8s 200 ms 3.5 s for a temperature fault 500 ms for a phase fault Output Type of contacts Maximum breaking voltage Max. breaking current Min. breaking current Electrical life (number of operations) Breaking capacity (resistive) Maximum rate Operating categories acc. to IEC/EN 60947-5-1 Mechanical life (operations) No cadmium 250 V AC/DC 5 A AC/DC 10 mA / 5 V DC 1 x 104 1250 VA AC 360 operations/hour at full load AC 12, AC 13, AC 14, AC 15, DC 12, DC 13, DC 14 30 x 106 Insulation Insulation coordination (IEC/EN 60664-1) Rated impulse withstand voltage (IEC/EN 60664-1) Dielectric strength (IEC/EN 60664-1) Insulation resistance (IEC/EN 60664-1) Overvoltage category III : degree of pollution 3 4 kV (1,2 / 50 s) 2 kV AC 50 Hz 1 min. > 100 M - 500 V DC General characteristics Display power supply Temperature indication "Phase" indication High threshold relay Low threshold relay Casing Mounting Mounting position Green LED Yellow LED (HWT81) Yellow LED (HWT81) Yellow LED (HT81, HT81-2) Yellow LED (HT81, HT81-2) 35 mm On 35 mm symmetrical DIN rail, IEC/EN 60715 All positions Unless otherwise specified, the characteristics given are applicable to all or part of the product range selected 23/06/2014 Material : enclosure plastic type VO to UL94 standard Protection (IEC/EN 60529) Weight Connecting capacity IEC/EN 60947-1 Max. tightening torques IEC/EN 60947-1 Operating temperature IEC/EN 60068-2 Storage temperature IEC/EN 60068-2 Humidity IEC/EN 60068-2-30 Vibrations according to IEC/EN60068-2-6 Shocks IEC/EN 60068-2-6 www.crouzet.com Incandescent wire test according to IEC 60695-2-11 & NF EN 60695-2-11 Terminal block : IP 20 IP 30 casing 121 g Rigid : 1 x 42 - 2 x 2.52 mm2 1 x 11 AWG - 2 x 14 AWG Flexible with ferrules : 1 x 2.52 - 2 x 1.52 mm2 1 x 14 AWG - 2 x 16 AWG 0,6 1 Nm / 5,3 8,8 Lbf.In -20 +50 C -40 +70 C 2 x 24 hr cycle 95 % RH max. without condensation 55 C 10 150 Hz, A = 0.035 mm 5g Standards Marking Product standard Electromagnetic compatibility Certifications Conformity with environmental directives CE (LVD) 73/23/EEC - EMC 89/336/EEC NF EN 60255-6 / IEC 60255-6 / UL 508 / CSA C22.2 N14 / EN 81-1 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 UL, CSA, GL 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 208 V 480 V (-15 % / +10 %) * > 30 % of the average of the 3 phases 50 60 Hz 1 Hz 70 % 600 K Timing Maximum response time in the event of a 3-phase fault (ms) 500 ms Output Type of output 2 single pole NO relay Insulation Galvanic isolation of power supply/measurement Nominal insulation voltage Yes, between power supply and PT100 (transformer) Yes, between power supply and output (transformer and relay) Yes, between power supply and 3-phase network (transformer) Yes, between 3-phase network and output (relay) No, between 3-phase network and PT100 (leakage current limited by several high-value resistors) Yes, between PT 100 and output (relay) 400 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 5 C and 40 C according to standard EN81. Principles Unless otherwise specified, the characteristics given are applicable to all or part of the product range selected 23/06/2014 www.crouzet.com HWT81 operating principle : As long as the temperature controlled by the PT100 stays between the two preset thresholds on the front face, the temperature relay is closed. When the temperature exceeds one of the preset thresholds on the front face (upper or lower threshold), the preset time delay on the front face (Tt) is activated. The yellow temperature LED (R1) flashes. At the end of the time delay, if the temperature still exceeds the preset threshold, the output relay opens and the yellow LED is extinguished. The output relay R1 closes instantaneously when the temperature returns within the window of the two preset thresholds on the front face plus or minus the fixed hysteresis. The unit also monitors correct sequencing of phases L1, L2 and L3 of the 3-phase network and the total phase failure in the event of phase regeneration (<70 %). After a time delay on pick-up (t) and as long as the presence and sequence of the phases are correct, relay R2 and the R2 "phase" LED are active. When a fault appears, the "phase" relay opens and the R2 "phase" LED is extinguished instantly (response time from the appearance of a fault). On disappearance of the fault, both relay R2 and the phase control LED are activated (response time from the disappearance of a fault). See "Phase failure and phase sequence" curve on page If the PT100 probe is wired incorrectly (missing or short-circuited), output relay R1 opens and the yellow R1 LED flashes. No Legend High threshold Low threshold Hysteresis Monitored temperature Threshold crossing delay adjustable on front face (Tt) Dimensions (mm) mm Connections Unless otherwise specified, the characteristics given are applicable to all or part of the product range selected 23/06/2014 www.crouzet.com HWT81 No Legend Fusible ultra rapide 1 A ou coupe circuit Product adaptations Customisable colours and labels Fixed threshold in the generic measurement range Fixed or adjustable time delay Adjustable fixed hysteresis Unless otherwise specified, the characteristics given are applicable to all or part of the product range selected Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Crouzet: 84874130