Monitoring Relays 1-Phase AC/DC Over Current Types DIA01, PIA01 AC/DC over current monitoring relay Current measured through internal shunt Measuring range 0.5 to 5 A AC/DC Adjustable current limit on relative scale Adjustable hysteresis Programmable latching at set level Output: 8 A SPDT relay normally de-energized For mounting on DIN-rail in accordance with DIN/EN 50 022 (DIA01) or plug-in module (PIA01) 22.5 mm Euronorm housing (DIA01) or 36 mm plug-in module (PIA01) LED indication for relay and power supply ON Galvanically separated power supply DIA01 PIA01 Product Description Ordering Key DIA 01 C B23 5A DIA01 and PIA01 are precise maintained. Housing AC/DC over current monitor- The red LED indicates the Function ing relays. Direct measuring relay status. Through the Type or through current transformer. built-in shunt it is possible to Item number Owing to the built-in latch monitor loads up to 5 A Output function, the ON-position of AC/DC. Power supply the relay output can be Range Type Selection Mounting Output Supply: 24 to 48 VAC/DC Supply: 115/230 VAC DIN-rail SPDT DIA 01 C D48 5A DIA 01 C B23 5A Plug-in SPDT PIA 01 C D48 5A PIA 01 C B23 5A Input Specifications Output Specifications Input (current level) Output SPDT relay DIA01 Terminals Y1, Y2 Rated insulation voltage 250 VAC PIA01 Terminals 5, 7 Contact ratings (AgSnO) 2 Measuring ranges Resistive loads AC 1 8 A 250 VAC Direct Internal resist. Max. curr. DC 12 5 A 24 VDC ..5A: 0.5 to 5 A AC/DC 0.05 6 A Small inductive loads AC 15 2.5 A 250 VAC Max. current for 1 s 25 A DC 13 2.5 A 24 VDC Standard CT (examples) AAC Max. curr. rms 6 Mechanical life 30 x 10 operations TADK2 50 A/5 A 5 to 50 A 60 A 5 Electrical life 10 operations CTD1 150 A/5 A 15 to 150 A 180 A (at 8 A, 250 V, cos = 1) CTD4 400 A/5 A 40 to 400 A 480 A TAD12 1000 A/5 A 100 to 1000 A 1200 A Operating frequency 7200 operations/h TACO200 6000 A/5 A 600 to 6000 A 7200 A Dielectric strength Contact input Dielectric voltage 2 kVAC (rms) DIA01 Terminals Z1, Y1 Rated impulse withstand volt. 4 kV (1.2/50 s) PIA01 Terminals 8, 9 Disabled > 10 k Enabled < 500 Latch disable > 500 ms Note: The input voltage cannot raise over 300 VAC/DC with respect to ground (PIA only) Specifications are subject to change without notice (06.10.08) 1DIA01, PIA01 Supply Specifications General Specifications Power supply Overvoltage cat. III Reaction time (input signal variation from Rated operational voltage (IEC 60664, IEC 60038) -20% to +20% or from through terminals: +20% to -20% of set value) A1, A2 or A3, A2 (DIA01) Alarm ON delay < 100 ms 2, 10 or 11, 10 (PIA01) Alarm OFF delay < 300 ms Accuracy (15 min warm-up time) D48: 24 to 48 VAC/DC 15% Temperature drift 1000 ppm/C 45 to 65 Hz, insulated Repeatability 0.5% on full-scale B23: 115/230 VAC 15% Indication for 45 to 65 Hz, insulated Power supply ON LED, green Dielectric voltage DC supply AC supply Output relay ON LED, red Supply to input 2 kV 4 kV Environment (EN 60529) Supply to output 4 kV 4 kV Degree of protection IP 20 Input to output 4 kV 4 kV Pollution degree 3 (DIA01), 2 (PIA01) Rated operational power Operating temperature -20 to 60C, R.H. < 95% AC 4 VA Storage temperature -30 to 80C, R.H. < 95% DC 2 W Housing Dimensions DIA01 22.5 x 80 x 99.5 mm PIA01 36 x 80 x 94 mm Weight Approx. 150 g Screw terminals Tightening torque Max. 0.5 Nm acc. to IEC 60947 Approvals UL, CSA CE Marking Yes EMC Electromagnetic Compatibillity Immunity According to EN 61000-6-2 Emission According to EN 61000-6-3 Mode of Operation DIA01 and PIA01 monitor Example 1 connection between termi- Example 2 (Stardard CT) both AC and DC over current (connection between termi- nals Z1, Y1 or 8, 9 is inter- (no connection between ter- through an internal shunt. nals Z1, Y1 or 8, 9 - latch rupted or the power supply minals Z1, Y1 or 8, 9 - latch They can monitor AC cur- function enabled) is interrupted as well. function disabled) rents up to 6000 A when connected to a suitable cur- The relay operates and latch- The relay operates when the rent transformer. es in operating position current flowing through the when the measured value transformer exceeds the set exceeds the set level. Pro- level. It releases when the vided that the current has current drops min. 4% below dropped min. 4% below the the set level (see hysteresis) set point (see hysteresis) the or when the power supply is relay releases when the inter- interrupted. Range Setting Centre knob: Hysteresis: Approx. resistor values: Setting of current on relative Approx. 4% of set value, it 10%: 180 k scale: from 10 to 110% of the can be extended by inserting 25%: 47 k full-scale value. a resistor between terminals 50%: 22 k Z1, Y1 or 8, 9. 75%: 15 k Latch: < 500 2 Specifications are subject to change without notice (06.10.08)