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Voltage and Current Relay Monitoring Relay NMI 1001 PI 0095-1103 E Current monitoring relay for single-phase AC/DC networks Function acc. DIN EN 60255-6: 11.94 • • • • • • Monitoring of single-phase current from AC/DC 0,02 A to AC/DC 0,5 A AC/DC 1 A to AC/DC 15 A Reaction to overrange or underflow of the response value Closed-circuit principle or open circuit principle adjustable Hysteresis 3 % or 10 % adjustable On-delay time tA adjustable ( from no delay "-" to 3 h at 16 time ranges) Wide 22,5 mm Front View LED SUPPLY green, power supply LED TRIPPED red, on-delay time tA (flashing) 1 gg Device description The NMI 1001 is a monitoring relay with three measurement ranges for singlephase currents. There are two types with different measuring ranges. The frequency range is of 45 Hz to 400 Hz. The monitoring value is operated with an integrating full wave rectification. Through this the monitoring of no sinusoidal voltage is possible (e.g. voltage with harmonic component). At AC, the devices value at a rectifier value calibrated on the root-mean-square of a sine voltage. At DC, a rectification is carried out and the mean value is monitored. The effective value itself isn't monitored. As output contact 1 change-over contact is available. There is a isolation between the auxiliary supply, the measuring circuit and the output circuit (relay contact). Function description The measurement ranges are adjusted by the different connection of the terminals B1, B2, B3 and B4. The response value is adjusted with the potentiometer Ix, the functions and the on-delay time are adjusted with the rotary switches (see tables the next page). Function Open Circuit Principle After applying the supply voltage and transgression of the upper or lower limit values of the adjusted response value (depending on the function selection) the output relay switches into the on-position. This occurs according to the adjusted on-delay time. The transgression of the upper or lower limit values of the response value (depending on the adjustment and hysteresis), causes the output relay to go back into the off position. Function Closed Circuit Principle After applying the supply voltage, the output relay switches after tB in the active position. The transgression of the adjusted upper or lower limit value, according to the adjusted function, causes the output relay (depending on the adjusted on-delay time) to switch back into the off-position. Depending on the adjusted hysteresis, the output relay switches back into the active position after the respective transgression of the upper or lower limit of the response value. Proper Use / Intended Purpose The NMI 1001 is used to monitoring current levels in switchplants. Note Disconnect the connecting lines of the NMI 1001 before execute voltage or insulation tests in the switchplant. Observe all relevant regulations and standards. 1/5 Voltage and Current Relay Monitoring Relay NMI 1001 PI 0095-1103 E Monitoring ranges NMI 1001 0,02 - 0,500 A Range Terminal Response value Internal resistance 1 2 3 B1 - B2 B1 - B3 B1 - B4 2,5 Ω 500 mΩ 100 mΩ 2 -20 mA AC/DC 10 - 100 mA AC/DC 50 - 500 mA AC/DC Monitoring ranges NMI 1001 0,1 - 15 A Range Terminal Response value 1 2 3 B1 - B2 B1 - B3 B1 - B4 0,1 - 1 A AC/DC 0,5 - 5 A AC/DC 1,5 - 15 A AC/DC Internal resistance 50 mΩ 10 mΩ 3,33 mΩ Permissible overcurrent max. 3 s max. 10 ms Pause 100 s Pause 100 s 0,05 A 0,2 A 0,5 A 0,25 A 1A 2,5 A 1,25 A 5A 12 A Max. fusing (slow) Permissible overcurrent continuously max. 3 s max. 10 ms Pause 100 s Pause 100 s 2,5 A 10 A 25 A 12,5 A 50 A 125 A 21 A 50 A 125 A Max. fusing (slow) dauernd 0,1 A 0,4 A 2,5 A 5A 16 A 25 A Response values Potentiometer Ix Response value analog adjusting with potentiometer as factor in the range from 0,1 to 1. Response value = upper limit of measuring range x adjusted factor Functions Rotary switch MODE HYSTERESIS CURRENT CURRENT I > 10 Overrange > 10 Overrange > 3 Overrange > 3 Overrange < 10 Underflow < 10 Underflow < 3 Underflow < 3 Underflow - - - HYSTERESIS ca. 10 % ca. 10 % ca. 3 % ca. 3 % ca. 10 % ca. 10 % ca. 3 % ca. 3 % - MODE Open circuit principle Closed circuit principle Open circuit principle Closed circuit principle Open circuit principle Closed circuit principle Open circuit principle Closed circuit principle - On-delay time Rotary switch ON-DELAY 0,1 s 0,3 s 0,5 s 1s 1,5 s 3s 5s 10 s 30 s 100 s 3 min 10 min 30 min 1h 3h - (no delay) Note • During timing period, a operation of the function rotary switch or the on-delay rotary switch immediately terminates the timing operation. • With no delay " - " and simultaneous active function overflow, the NMU 1001 react from a certain threshold of the instantaneous value of the monitoring value and the output relay switched very rapidly in "quick time" ( see also technical data at monitoring circuit, response time). 2/5 Voltage and Current Relay Monitoring Relay NMI 1001 PI 0095-1103 E Function diagram Power supply LED SUPPLY Monitoring value (Operating mode overflow of the response value >) Response val. Hysteresis Monitoring value (Operating mode underflow of the response value <) Hysteresis Response val. LED TRIPPED Output contact Open circuit principle Output contact Closed circuit princ. 15/18 15/16 15/18 15/16 tB Stand-by time, tA Response time Application examples NMI 1001 0,02 -- 0,5 A: Response value 50 mA AC/DC On-delay time 100 s Function overrange, 3 % hysteresis, open circuit principle Settings • Measuring range 10 to 100 mA (terminal B1 / B3) • Poti Vx at 0,5 (0,5 x upper limit of measuring range 100 mA) = 50 mA • Rotary switch ON DELAY at 100 s • Function rotary switch at > 3 Description If the monitoring value exceeds the response value of 50 mA, the LED TRIPPED begins to flash. After the preselected on-delay time 100 s the output relay switches into its active position and the LED TRIPPED lights up continuously. If the actual monitoring value falls below the response value minus the hysteresis of 3 %, the output relay switched back into its off-position. If falls below before the on-delay time is reached, the LED TRIPPED goes out - see function diagram. NMI 1001 1 -- 15 A: Response value On-delay time Function 12 A AC/DC no underflow, 10 % hysteresis, closed circuit principle Settings • Measuring range 1,5 to 15 A (terminal B1 / B2) • Poti Vx at 0,8 (0,8 x upper limit of measuring range 15 A) = 12 A • Rotary switch ON DELAY at " - " (no delay) • Function rotary switch at < 10 If the measuring value falls below of the response value of 12 A, the output relay switched into its off-position without a on-delay time, and the LED TRIPPED lights up. If the actual measuring value exceeds the response value plus the hysteresis of 10 %, the output relay goes in its operating position. The LED TRIPPED goes out - see function diagram. 3/5 Voltage and Current Relay Monitoring Relay NMI 1001 PI 0095-1103 E Technical Data Power circuit Rated voltage UN Rated consumption at 50 Hz and UN Rated consumption at 50 Hz and UN Maximum in rush current at UN (< 1 ms) Rated frequency Operating voltage range Parallel permitted loads Monitoring circuit (DC or sinusoidal measuring voltage) Isolation to power circuit Setting range hysteresis Dispersion Rated frequency range of response value Minimum pulse length of response value Minimum pulse length of response value at NO DELAY "-" Time circuit Dispersion Influence of supply voltage Influence of ambient temperature Output circuit Contact equipment Contact material Rated operating voltage Rated value of maximum continuous current Ith Minimal contact load Application category acc. to EN 60947--5--1:1991 Permissible switching frequency Mechanical lifetime Electrical lifetime 20/2 A, AC 250 V, cos ϕ = 0,3 Response time at "-" and function ">" (AC 50 Hz) Response time at "-" and function ">" (DC) Off-delay time at "-" and function ">" Off-delay time at 0,1 s to 3 h Minimum pulse time of output relay Availability time of measurement tB after switch-on of supply Override time of measurement after switch-on of supply General data Rated voltage Rated impulse voltage Over voltage category Test voltage current circuits Test voltage contact/contact Protection class housing/terminals acc. to DIN VDE 0470 sec. 1:11.92 Isolation Contamination level Ambient temperature, working range Weight Approvals Terminal data and connection data Rated insulation voltage Screw / thread Screwhead Stud torque Rated connecting ability rigid (single-core or multi-core) / flexible flexible with wire-end ferrule AWG Multi-wire connection rigid (single-core or multi-core) / flexible flexible with wire-end ferrule DC 24 V -1W 1A 50 Hz to 60 Hz 0,8 to 1,1 x UN yes AC 24 V 2,5 VA 2,3 W 1,2 A AC 115 - 120 V 2,5 VA 2,3 W 0,25 A AC 230 - 240 V 2,5 VA 2,3 W 0,13 A yes 3 % appr. or 10 % appr. of response value, adjustable ≤ ± 0,5 % ≤ ± 0,05 % / % ∆UN ≤ ± 0,0 5 % / K∆T 45 Hz -- 400 Hz 25 ms with overrange/underflow of the DC response value 1 ms with 1,5 times overrange of the DC response value ≤ ± 0,2 % + ≤ 50 ms ≤ ± 0,02 % / % ∆UN ≤ ± 0,005 % / K∆T 1 changeover contact Ag -- alloy, gold-plated AC/DC 240 V 5A ≥ AC/DC 5 V / ≥ AC/DC 10 mA AC--15: Ue 230 V, Ie 3 A, DC 13: Ue 24 V, Ie 2 A ≤ 3600 switching cycles/h 30 x 106 switching cycles 0,12 x 106 switching cycles AC-15 ≤ 80 ms at 1,05 times response value ≈ 25 ms at 1,3 times response value (quicktime) ≤ 50 ms at 1,1 times response value ≈ 15 ms at 1,6 times response value (quicktime) ≈ 30 ms after 1,1 times response value ≤ 150 ms after 1,6 times response value ≈ 30 ms after 1,1 times response value ≈ 35 ms ater 1,6 times response value > 100 ms, ≤ 100 ms ≤ 60 ms 500 V 5 kV (1,2 / 50 µs); 4 kV (1,2 / 50 µs) at DC 24 V device III 2,7 kVeff (50 Hz) 2,5 kVeff (50 Hz) IP 40 / IP 20 acc. to VDE 0110 section 1, 2 : 01.89 3 outside, 2 inside -20°C to +60 0,2 kg CULUS 500 V never lost / M3 M3, +/- Pozidrive 1, slot for screwdriver 0,8 x 4,8 mm² max. 1 Nm 0,2 - 6 mm² / 0,2 - 4 mm² 0,2 - 4 mm² 24 - 10 2 wires with the same cross section 0,2 - 2,5 mm² / 0,2 - 2,5 mm² 0,2 - 1,5 mm² 4/5 Voltage and Current Relay Monitoring Relay NMI 1001 PI 0095-1103 E Connection Diagram Assembly 1 Attach relay to DIN rail. Disassembly 3 Push relay down (in direction of arrow) 2 Press the relay carefully onto the DIN rail (in direction of arrow) until it locks into place. 4 Release relay and remove it from the DIN rail (see arrow) Dimension Diagram Subject to Change SCHLEICHER Electronic GmbH & Co. KG Pichelswerderstraße 3-5 D-13597 Berlin Ph ++49.30.33005.0 Fx ++49.30.33005.344 Hotline ++49.30.33005.304 www.schleicher-electronic.com [email protected] 5/5