1 type no. ebu electronic circuit breaker for ac ups applications mounting method t rail mounting design a adjustability i n ups + i n load number of poles 1 1-pole, 1-pole protected electronically 2 2-pole, 1-pole protected electronically version 0 with physical isolation by means of mcb 4230-t signal input 0 without signal input signal output 3 auxiliary change-over contact operating voltage ac 230 v voltage rating ac 230 v characteristic curve b thermal 1.05 - 1.30 i n ; magnetic 3.2 - 4.8 i n c thermal 1.05 - 1.30 i n ; magnetic 6.4 C 9.6 i n current rating range 4 a (only characteristic curve c) 6 a 10 a 16 a ebu10 - t a 1 - 0 0 3 - ac 230 v - c - 10 a ordering example preferred types characteristic curve c description typical applications benefits technical data the electronic circuit protector type ebu (electronic breaker unit) provides selective overcurrent protection in ac 230 v ups systems. it consists of an mcb approved for short circuit interruptions up to 10 ka and of an add-on electronic circuitry, taking over measuring and evaluation tasks. the product is available with the typical mcb ratings 4 a, 6 a, 10 a and 16 a with b and c characteristics and is directly operated at the output of the corresponding ups. ups units often do not supply sufficient power in the event of a short circuit to trip standard mcbs. the electronic ac circuit breaker can individually be adjusted to the ups unit and will therefore reliably trip in the event of a short circuit. optimal adjustment of the loads current rating allows detection and disconnection of an overload in the load circuit. this helps exclude the fatal disconnection of the entire output voltage of the ups unit. the electronic breaker unit ebu allows a reduction in size of one third for ups units because power reserves do no longer have to be kept available for tripping. the ebu increases system availability, reduces overall costs and simplifies electrical planning. electronic overcurrent protection by means of electronic ac circuit breakers is ideally suited to the selective protection of uninterruptible power supplies (ups) in industrial plants. ebu ensures the power safety provided by ac ups systems. l enhanced system availability through effective protection l reduction of overall costs by a 1/3 more efficient rating l easy planning with a variable overcurrent protection order numbering code rated voltage u n ac 230 v 10% current ratings i n 4 a, 6 a, 10 a, 16 a frequency 50 hz rated insulation voltage ac 250 v rated voltage and current rating range of the auxiliary contact dc 110 v / 0.3 a C 33 w dc 30 v / 1.1 a C 33 w ac 120 v / 0.5 a C 60 va ac 240 v / 0.25 a C 60 va min. load of aux. contact (valid for standard industrial surroundings, no aggressive gases) 3 ma at 24 v reference ambient temperature -35 c...+60 c method of operation s-type mode of trip / degree of trip-free behaviour mechatronic / trip free (positively trip-free) max.* cable length (outgoing wire) from generator to ebu typical electrical operational values voltage drop in v at 1 x i n insulation co-ordination (except signalling) rated impulse voltage 4 kv; overvoltage category iii; pollution degree 2; reinforced insulation in the actuating area insulation co-ordination of the signalling rated impulse voltage: 2.5 kv note: the si contacts are not suitable for connection to selv control voltage. insulation resistance > 100 mohm (dc 500 v) degree of protection ii endurance mechanical (contacts) electronic potentiometer 20,000 cycles > 15 years within specification min. 1000 steps b6 b10 b16 c4 c6 c10 c16 31 m/ mm 2 19 m/ mm 2 12 m/ mm 2 24 m/ mm 2 17 m/ mm 2 10 m/ mm 2 6 m/ mm 2 i n (a) 4 6 10 16 v 0,77 0,53 0,35 0,3 www.e-t-a.de electronic circuit breaker ebu 1638 4
2 technical data technical data operating behaviour (endurance) iec 60947-2 1500 cycles; u n (ac); 1*i n ; cos phi= 0.8 + 8500 cycles mechanically + 12 cycles; u n (ac); 6*i n ; cos phi= 0.5 rated service short- circuit rupture capacity (ics) to iec 60947-2 3 cycles (o-co-co); u n (ac); 7500 a; cos phi = 0.5 rated ultimate short- circuit rupture capacity (icu) iec 60947-2 2 cycles (o-co); u n (ac); 10,000 a; cos phi = 0.5 signalling auxiliary contacts 1 change over contact (terminals 11, 12, 14) terminals 11-12 closed in off or error condition terminals 11-14 open in off or error condition led status indication normal condition: green after adjustment i n ups / load: orange blinking for 5 s error condition (electrical trip) red error condition (no voltage applied): off mounting values mounting method symmetrical rail mounting position any max. operating currents depending on ambient temperature terminals - screw terminals input side (cage clamps) horizontal busbar connection possible with comb busbars - push-in terminal on output side and on aux. contacts cable cross section line n load si 125 mm2 110 mm2 0.54 mm2 0.51.5 mm2 tightening torque 2 nm max. mass approx. 230 g 1-pole approx. 330 g 2-pole environmental tests (typical values) vibration (sinusoidal) test to iec 60068-2-6, test fc 0.38 mm (10 C 57 hz), 5 g (57 C 500 hz) 10 frequency cycles per axis shock test to iec 60068-2- 27, test ea 30 g (11 ms) humidity test to iec 60068-2-78, test cab 48 hours at 95% rh, temperature +40c degree of protection operating area ip 40 terminal area ip00 storage temperature -40 c ...+70 c all dimensions without tolerances are for reference only. e-t-a reserves the right change specifications at any time in the interest of improved design, performance and cost effective - ness, the right to make changes in these specifications without notice is reserved. product markings may not be exactly as the ordering codes. errors and omissions excepted. rated current i n (a) max. operating currents depending on ambient temperature t (a) -35c -30c -25c -20c -15c -10c -5c 0c +5c +10c 4 5.08 5.00 4.92 4.84 4.76 4.68 4.60 4.52 4.40 4.32 6 7.70 7.58 7.46 7.34 7.21 7.09 6.96 6.83 6.70 6.56 10 13.89 13.62 13.35 13.07 12.81 12.53 12.23 11.93 11.63 11.33 16 20.78 20.43 20.08 19.75 19.40 19.05 18.70 18.33 17.96 17.58 rated current i n (a) max. operating currents depending on ambient temperature t (a) +15c +20c +25c +30c +35c +40c +45c +50c +55c +60c 4 4.24 4.20 4.08 4.00 3.88 3.76 3.64 3.56 3.44 3.32 6 6.42 6.27 6.14 6.00 5.84 5.68 5.52 5.36 5.19 5.01 10 11.01 10.67 10.34 10.00 9.63 9.24 8.85 8.45 8.01 7.55 16 17.20 16.80 16.40 16.00 15.55 15.11 14.66 14.20 13.71 13.21 www.e-t-a.de electronic circuit breaker ebu 1638 4
3 dimensions 69 2 (max. 72 mm) 45.3 label rail en 60715-35 x 7,5 52,8 65,7 95 45 0.5 ebu10-t 1 pole 70 2 (max. 74 mm) 45.3 label rail en 60715-35 x 7,5 ebu10-t 2 pole 70,4 65,7 95 45 0.5 installation drawing schematic diagram mounting ar ea operating ar ea i n load i n ups 11 14 12 load ebu10-ta1-... ebu10-ta2-... status indication green / orange / red on / off n n n line i > signalling electronic control unit control current / voltage measurement i > connection and operating elements 1 toggle mcb 2 status indication mcb 3 adjustment of operating range ups (i n ups in [a]) 4 adjustment of trip range load (i n load in [a]) 5 led status indication of ebu10-t 6 screw terminal line (1) 7 screw terminal neutral conductor (n) 8 push-in terminal load (2.1/2.2) 9 push-in terminal signalling (change over contact) (11/12/14) 7 3 5 4 8 6 2 1 9 www.e-t-a.de electronic circuit breaker ebu 1638 4 electronic circuit breaker ebu
4 time/current characteristics ambient temperature 30 c 10000 1000 100 10 1 0,1 0,01 0,8 12 46 81 02 04 0 trip time in seconds ... times rated current curve b ... times rated current curve c ambient temperature 30 c 10000 1000 100 10 1 0,1 0,01 0,8 12 46 81 02 04 0 trip time in seconds electronic trip curve: thermal magnetic electronically variable type b 1.05 ... 1.30 i n 3.2 ... 4.8 i n i (t > 100 s) = 1.05 x i n , load i (t > 10 s) = 1.6 x i n , load i (t > 1 s) = 2.7 x i n , load i (t < 20 ms) = 1,5 x i n , ups type c 1.05 ... 1.30 i n 6.4 ... 9.6 i n i (t > 300 s) = 1.05 x i n , load i (t > 30 s) = 1.3 x i n , load i (t > 3 s) = 2.3 x i n , load i (t > 0.3 s) = 5.2 x i n , load i (t < 20 ms) = 1,5 x i n , ups tolerance of electronic trip curve (at 23c) t > 100 s t < 20 ms type b 1,051,17 i n load 1,331,5 i n ,ups t > 300 s t < 20 ms type c 1,051,17 i n load 1,311,5 i n ,ups www.e-t-a.de electronic circuit breaker ebu 1638 4
5 adjustment of electronic time-current characteristics (example) uninterruptible power supply / ups current rating = 12 a load smps dc 24 v: i n = 3 a selection of trip characteristic and current rating: characteristic curve c ? inrush current smps current rating: ? 10 a cable protection for cable cross section 1.5mm2 ebu10-ta1-003-ac230v-c-10a ebu ? i n ups: adjustment to 12 a ? rated current ups = 12 a ebu ? i n ups: adjustment to 3 a ? rated current load = 3 a step 3: adjustment of ebu to load step 2: adjustment of ebu to ups rating ups current rating =12 a step 1: selection of ebu setting options: i n , ups: single phase rated current of the ups unit at cont. load i n , load: rated current of the connected load recommendation: i n , ups: smaller or equal to the determined value i n , load: higher or equal to the determined value setting parameters: b6 b10 b16 c4 c6 c10 c16 i n , ups i n , load i n , ups i n , load i n , ups i n , load i n , ups i n , load i n , ups i n , load i n , ups i n , load i n , ups i n , load 7 off 11 off 17 off 4.3 off 7 off 11 off 17 off 7.5 2 12 3 19 4 5.5 1.3 8 2 12 3 21 4 8 2.5 13 3.5 21 5 6.5 1.6 9 2.5 14 3.5 25 5 8.5 3 14 4 23 6 7 2.0 11 3 16 4 28 6 9 3.5 15 5 25 7 8.5 2.3 12 3.5 21 5 34 7 9.5 4 16 6 28 8 10 2.6 14 4 25 6 38 8 10 4.5 17 7 29 10 11 3.0 16 4.5 28 7 43 10 11 5 19 8 31 12 13 3.3 18 5 34 8 57 12 12 5.5 21 9 34 14 14.5 3.6 21 5.5 38 9 64 14 13 6 22 10 35 16 17 4.0 25 6 43 10 68 16 in the off condition the electronic trip curve only takes effect in the short circuit range www.e-t-a.de electronic circuit breaker ebu 1638 4 electronic circuit breaker ebu
6 accessories mounting examples busbar ebu10-tx2 16 mm2 80 a / 250 v ac (2-pole devices) y 312 285 01 busbar ebu10-tx1 16mm2 80 a / 250 v ac (1-pole devices) y 312 284 01 end cap for busbars, 2-/3-pole y 308 506 01 label, packing unit 50 pcs x 222 977 50 1020 1020 52,8 35,2 nn ln ln ll nn n ll ln nn l 16 33,3 7,5 4 52,8 35,2 16 70,4 7,5 4 15,9 33,3 15,9 27,1 27,1 20 52,5 20 4 4 16,5 32,25 48,75 screw terminal 6 ? 50 mm2 connection from above, 32 x 4 mm mounting examples (2-pole; end caps not shown) mounting examples (1-pole; end caps not shown) y 312 289 01 screw terminal 6 ? 50 mm2 connection from the side, 32 x 4 mm y 312 288 01 27,1 27,1 20 52,5 20 4 4 16,5 32,25 48,75 screw terminal 6 ? 50 mm2 connection from above, 32 x 4 mm mounting examples (2-pole; end caps not shown) mounting examples (1-pole; end caps not shown) y 312 289 01 screw terminal 6 ? 50 mm2 connection from the side, 32 x 4 mm y 312 288 01 www.e-t-a.de electronic circuit breaker ebu 1638 4
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