Basler BE-51/27C, Instruction Manual

Page 1: ...0 1 2 3 4 5 67869 ABC DEF G 6H II GGJ KL M DEF DEK...

Page 2: ...des information concerning the operation and installation of BE1 51 27C Time Overcurrent with voltage control Relays To accomplish this the following is provided Specifications Functional characterist...

Page 3: ...r 1993 Printed in USA It is not the intention of this manual to cover all details and variations in equipment nor does this manual provide data for every possible contingency regarding installation or...

Page 4: ...ic Curves 1 9 Section 2 CONTROLS AND INDICATORS 2 1 Section 3 FUNCTIONAL DESCRIPTION 3 1 General 3 1 Block Diagram Analysis 3 1 Power Supply 3 1 Current Sensing 3 1 Voltage Sensing 3 3 Multiplexor 3 3...

Page 5: ...ral 5 1 Required Test Equipment 5 1 Operational Test 5 1 Preliminary Instructions 5 1 Time Overcurrent Pickup Test 5 5 Timed Output Test 5 7 Instantaneous Overcurrent Pickup Test 5 9 Voltage Control T...

Page 6: ...l conventional time coordination techniques apply A neutral ground overcurrent element can be applied and connected residually to a set of three current transformers on solidly grounded applications o...

Page 7: ...three timing options are available They are Characteristic curves Seven inverse time Nine I2 T Seven inverse time with extended timing range Nine I2 T with extended timing range Five British Standard...

Page 8: ...ic exhibits a dynamic characteristic that is immediately responsive to changes of the applied multiple of pickup current Integrating Timing Timing option Z3 and the characteristic curves available for...

Page 9: ...se and 0 1 to 0 8 amperes neutral 0 3 to 2 4 amperes phase and neutral For all other units two ranges are available They are 0 5 to 12 amperes and 0 1 to 2 4 amperes Power Supply Five power supply opt...

Page 10: ...t plug Basler Electric part number 10095 or G E part number 12XLA12A1 allows the relay to be tested in place without disturbing external control circuit wiring MODEL AND STYLE NUMBER DESCRIPTION BE1 5...

Page 11: ...ys electrical and physical specifications are as follows Rated for 160 Vac continuous at 40 to 70 Hz nominal frequency 50 or 60 Hz with a maximum burden of 1 VA 0 Continuously adjustable over the rang...

Page 12: ...Measuring Accuracy Instantaneous Overcurrent Better than 98 of pickup level Dropout Ratio Time Delay Accuracy 5 of the characteristic curve Figures 1 2 through 1 70 for any com bination of the front...

Page 13: ...60 hertz for one minute in accordance with IEC 255 5 and ANSI IEEE C37 90 1989 Dielectric Test Radio Frequency Field Tested using a five watt hand held transceiver operating at Interference RFI random...

Page 14: ...select any of the timing types designated as B1 through B8 and the British Standard timing types E2 E4 E5 E6 and E7 Z3 option can select the integrating algorithm for any of the timing types designate...

Page 15: ...e current sensing input range Refer to Table 2 2 for sensing input ranges D TIME DIAL NEUTRAL If present Determines the time delay between sensing of the overcurrent condition and the closing of the o...

Page 16: ...BE1 51 27C Controls and Indicators 2 2 Figure 2 1 Location of Controls and Indicators...

Page 17: ...s continuous adjustment over a range of 40 to 120 Vac of the sensed input front panel VOLTAGE INHIBIT level Q VOLTAGE INHIBIT A B C Indicator s LEDs illuminate when the sensed input voltage level exce...

Page 18: ...12 0 0 8 9 13 14 15 16 Neutral 0 75 1 00 1 50 1 75 2 25 2 50 3 00 3 25 3 75 4 00 17 18 Range 4 Three Phase and Neutral Phase 0 75 1 00 1 50 1 75 2 25 2 50 3 00 3 25 3 75 4 00 8 9 13 14 15 16 Neutral 2...

Page 19: ...imit 2 9 1 20 1 21 1 57 1 58 C3 I2 T with Limit 3 A 1 22 1 23 1 59 1 60 C4 I2 T with Limit 4 B 1 24 1 25 1 61 1 62 C5 I2 T with Limit 5 C 1 26 1 27 1 63 1 64 C6 I2 T with Limit 6 D 1 28 1 29 1 65 1 66...

Page 20: ...BE1 51 27C Controls and Indicators 2 6...

Page 21: ...tioning properly Type S power supplies use a field adjustable link J4 to select the appropriate input voltage either 48 Vdc or 125 Vdc Selection is accomplished by placing the link into the desired po...

Page 22: ...BE1 51 27C Functional Description 3 2 Figure 3 2 Functional Block Diagram...

Page 23: ...uired time delay before the timed output relay will be energized The time delay characteristics are shown in the curves located in Section 1 If extended timing range options 2 D or 2 E is present the...

Page 24: ...ts that can be present depending upon the relay configuration Timed and Instantaneous Outputs Each output signal representing either time overcurrent or instantaneous overcurrent from each monitored p...

Page 25: ...of 0 2 A flows in the output circuit A special reed relay in series with the output contact provides the signal to the target indicator Note that the front panel function targets TIMED INST 1 etc may...

Page 26: ...en the connecting plugs are removed the relay is disconnected from the operating circuit and will not provide system protection Always be sure that external operating monitored conditions are stable b...

Page 27: ...m each relay To prevent an inductive overload of the relay contacts it is necessary to break the trip circuit externally through the 52a contacts Relay circuitry is connected to the case terminals by...

Page 28: ...BE1 51 27C Installation 4 3 Figure 4 2 Typical Sensing External Connections Sensing Input Type L Figure 4 3 Typical Sensing External Connections Sensing Input Type P...

Page 29: ...BE1 51 27C Installation 4 4 Figure 4 4 Typical Sensing External Connections Sensing Input Type T Figure 4 5 Typical Sensing External Connections Sensing Input Type A Open Delta Configuration...

Page 30: ...BE1 51 27C Installation 4 5 Figure 4 6 Typical Sensing External Connections Sensing Input Type D Open Delta Configuration Figure 4 7 Typical Sensing External Connections Sensing Input Type J...

Page 31: ...t on the component side of the type S power supply printed circuit board To select 48 Vdc or 125 Vdc input disconnect all power from the relay and move the link to the desired position See Figure 4 9...

Page 32: ...BE1 51 27C Installation 4 7 Figure 4 10 Typical Internal Diagram Sensing Input Type L...

Page 33: ...BE1 51 27C Installation 4 8 Figure 4 11 Typical Internal Diagram Sensing Input Type J With Power Supply Status...

Page 34: ...BE1 51 27C Installation 4 9 Figure 4 12 Typical Internal Diagram Sensing Input Type A With Power Supply Status...

Page 35: ...BE1 51 27C Installation 4 10 Figure 4 13 Typical Internal Diagram Sensing Input Type P With Power Supply Status...

Page 36: ...listed below Refer to Figures 5 1 through 5 6 for test setups a Appropriate ac or dc power source for relay operation b Appropriate ac source 50 or 60 Hz as appropriate for voltage and current testin...

Page 37: ...nals 1 and 10 are connected Also verify that either A B or current sense terminals are connected initially N terminals will be connected later in the test f Sensing Input Type J Two Phase with Neutral...

Page 38: ...BE1 51 27C Tests and Adjustments 5 3 Figure 5 2 Test Setup for Sensing Input Type P Three Phase Sensing Figure 5 3 Test Setup for Sensing Input Type T Three Phase with Neutral Sensing...

Page 39: ...BE1 51 27C Tests and Adjustments 5 4 Figure 5 4 Test Setup for Sensing Input Type A Three Phase Delta Configuration Figure 5 5 Test Setup for Sensing Input Type D Three Phase with Neutral Sensing...

Page 40: ...ving one of the following values a 0 5 A for relays with Sensing Input Range 1 2 or 4 b 1 5 A for relays with Sensing Input Range 3 or 5 Step 4 Slowly adjust the front panel TAP CAL Control CCW until...

Page 41: ...the correct sensing input types a Sensing Input Type L Single Phase Sensing This concludes the time overcurrent test Proceed to the timed output test b Sensing Input Type J Two Phase and Neutral Sensi...

Page 42: ...es Do not disturb this setting Step 18 Record the current reading and remove input current RESULT The recorded value should be within 5 of the front panel TAP NEUTRAL selector A setting for the neutra...

Page 43: ...The appropriate front panel ELEMENT target A B or C if present trips Step 8 Remove input current and if present reset the relay front panel targets Step 9 On the appropriate time overcurrent curve cha...

Page 44: ...ent and if present reset the relay front panel targets Step 20 On the appropriate time overcurrent curve chart Figures 1 2 through 1 38 locate the line representing 5 times the tap value from Step 5 w...

Page 45: ...zes Do not disturb this setting RESULT If target Type A or B is present a The front panel FUNCTION INST 1 target if present will trip b The appropriate front panel ELEMENT target A B or C if present w...

Page 46: ...ADJ or VOLTAGE INHIBIT ADJ fully CCW Step 6 Adjust the test voltage to its minimum voltage setting then slowly increase the voltage until the appropriate front panel VOLTS INHIBIT or VOLTAGE INHIBIT...

Page 47: ...ure 5 6 Because the relay front panel TIMING indicator provides the needed pickup indication do not connect the test setup to the output terminals The front panel TAP selector is ganged and the adjust...

Page 48: ...this pickup point will be the same for all the phases Step 9 Remove input current Step 10 Reconnect the test set output to the neutral sense terminals See Figures 5 3 5 5 or 5 6 Step 11 Adjust the cu...

Page 49: ...until the point 4 from the time in seconds axis is crossed The curve for a setting of 52 crosses the plot point and should be entered on the front panel TIME DIAL c For a lesser overcurrent differenc...

Page 50: ...J move CW until the appropriate front panel VOLTS INHIBIT or VOLTAGE INHIBIT indicator just illuminates The voltage inhibit level is now established If multiple phases are sensed by the relay all phas...

Page 51: ...est set overcurrent threshold reading on the ammeter Step 13 Remove the input current Step 14 Reset the INST TARGET if present Step 15 If the overcurrent threshold reading from Step 13 was too high or...

Page 52: ...d component values may be obtained from the schematics or the parts list of the Service Manual Replacement parts may be purchased locally The quality of replacement parts must be at least equal to tha...

Page 53: ...onnected to ten coaxial binding posts Fingers on the black side are connected to the inner binding posts black thumb nuts and tap into the relay internal circuitry Fingers on the red side of the test...