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INSTRUCTION MANUAL

for

BE1-24

VOLTS PER HERTZ

OVEREXCITATION RELAY

Publication: 9 1716 00 990

Revision: E

08/98

Содержание BE1-24

Страница 1: ...INSTRUCTION MANUAL for BE1 24 VOLTS PER HERTZ OVEREXCITATION RELAY Publication 9 1716 00 990 Revision E 08 98...

Страница 2: ...he procedures presented in this manual INTRODUCTION This Instruction Manual provides information concerning the operation and installation of BE1 24 Volts per Hertz Overexcitation Relay To accomplish...

Страница 3: ...ic Co Highland IL 62249 August 1998 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 i...

Страница 4: ...2 Trip Level Detector 3 2 Digital to Analog Converter 3 2 Output Functions 3 3 Inverse Square Timing 3 3 Definite Time Alarm 3 4 Instantaneous Trip Output 3 4 Outputs 3 4 Timing Status Display 3 4 Wat...

Страница 5: ...iv BE1 24 Introduction CONTENTS CONTINUED SECTION 6 MAINTENANCE 6 1 General 6 1 In House Repair 6 1 Storage 6 1 Test Plug 6 1 SECTION 7 MANUAL CHANGE INFORMATION 7 1 Changes 7 1...

Страница 6: ...nts are not laminated and stray flux in these components cause large eddy current losses and hysteresis losses This generates excessive heat Also the excess flux through the air requires a large curre...

Страница 7: ...ar reset characteristic which can be adjusted to follow the cooling rate of the protected equipment So as heat builds up and dissipates within the protected equipment due to overexcitation excursions...

Страница 8: ...otected equipment In this example two steps of definite time delay overexcitation protection are applied to provide protection that approximates the transformer damage curve One step is set for 110 pe...

Страница 9: ...1 4 BE1 24 General Information Figure 1 1 Inverse Square vs Two Step...

Страница 10: ...BE1 24 General Information 1 5 Figure 1 2 Protection Characteristics of the BE1 24...

Страница 11: ...in a particular relay and appear on the front panel drawout cradle and inside the case assembly Sample Style Number Figure 1 3 illustrates how a style number determines and describes the relay feature...

Страница 12: ...BE1 24 General Information 1 7 Figure 1 3 Style Number Identification Chart...

Страница 13: ...c 12 to 32 Vdc 4 0 W Y Mid Range 48 Vdc 24 to 150 Vdc 4 0 W 125 Vdc 24 to 150 Vdc 4 0 W Z High Range 250 Vdc 62 to 280 Vdc 5 0 W 240 Vac 90 to 270 Vac 12 0 VA Type L power supply initially requires 14...

Страница 14: ...n 0 1 second increments A Alarm setting of 0 0 enables the Alarm output to be instantaneous Instantaneous Trip 132 milliseconds at 60 Hz Optional Timing Accuracies Inverse square and definite time acc...

Страница 15: ...IEEE C37 90 one minute dielectric high potential tests as follows All circuits to ground 2121 Vdc Input to output circuits 1500 Vac or 2121 Vdc Surge Withstand Capability Qualified to ANSI IEEE C37 90...

Страница 16: ...BE1 24 General Information 1 11 Figure 1 4 Inverse Square Characteristic Curves...

Страница 17: ...1 12 BE1 24 General Information Figure 1 5 Inverse Square Characteristic Curves Multiples of Pickup vs Time...

Страница 18: ...tput Adjustable from 1 0 to 3 99 V Hz in 0 01 V Hz increments F ALARM TIME DELAY Thumbwheel adjustment establishes the definite time delay for the alarm output Adjustable from 0 1 to 9 9 seconds in 0...

Страница 19: ...2 2 BE1 24 Human Machine Interface Figure 2 1 Location of Controls and Indicators...

Страница 20: ...y adjusted to define the relay operating characteristics These thumbwheel settings define the volts per hertz pickup levels for the time delayed trip the alarm and the optional instantaneous trip func...

Страница 21: ...Figure 3 2 At the proper time this digital information is supplied to an external digital to analog converter in preparation for magnitude comparison Pickup for all three functions is individually adj...

Страница 22: ...trip pickup setting is exceeded the integrating trip timer begins ramping up in accordance with the selected inverse square curve until a trip output is produced But if the volts per hertz condition...

Страница 23: ...antaneous Trip Output Instantaneous trip output is optional When this option has been selected the relay will respond in less than eight cycles for a volts per hertz magnitude that is 1 5 times or gre...

Страница 24: ...ted has closed For details refer to Section 1 BUILT IN TEST Built in test BIT is a feature not shown on block diagram that provides a quick test routine that is programmed into the relay When initiate...

Страница 25: ...132 Vac High Range Z 125 250 Vdc 62 to 280 Vdc 120 240 Vac 90 to 270 Vac 14 Vdc required to start the power supply Relay operating power is developed by the wide range isolated low burden flyback swit...

Страница 26: ...cautions 1 A minimum of 0 2 A in the output circuit is required to ensure operation of current operated targets 2 The relay is a solid state device If a wiring insulation test is required remove the c...

Страница 27: ...4 2 BE1 24 Installation Figure 4 1 M1 Case Outline Dimensions Front View...

Страница 28: ...BE1 24 Installation 4 3 Figure 4 2 M1 Case Double Ended Semi Flush Mounting Outline Dimensions Side View...

Страница 29: ...4 4 BE1 24 Installation Figure 4 3 M1 Case Double Ended Projection Mounting Outline Dimensions Side View...

Страница 30: ...BE1 24 Installation 4 5 Figure 4 4 M1 Case Double Ended Panel Drilling Diagram Rear View...

Страница 31: ...4 6 BE1 24 Installation Figure 4 5 M1 Case Panel Drilling Diagram...

Страница 32: ...BE1 24 Installation 4 7 Figure 4 6 M1 Case Projection Mounting Outline Dimensions Rear View...

Страница 33: ...bus from each relay CONNECTIONS Incorrect wiring may result in damage to the relay Be sure to check model and style number against the options listed in the Style Number Identification Chart before c...

Страница 34: ...BE1 24 Installation 4 9 Figure 4 7 Typical Internal Connections...

Страница 35: ...4 10 BE1 24 Installation Figure 4 8 Typical AC Sensing Connections Figure 4 9 Typical Control Circuit Diagram...

Страница 36: ...ons are stable before removing a relay for inspection test or service 4 Be sure the relay case is hard wired to earth ground using the ground terminal on the rear of the unit It is recommended to use...

Страница 37: ...tremely stable in frequency and magnitude A Doble F2500 with hand controller or Multi Amp Epoch 30 are suggested Also the digital voltmeter must be stable and accurate at 10 Hz Pickup Step 1 Connect t...

Страница 38: ...ront panel thumbwheel switches as follows INST PICKUP 2 00 V Hz TIME TRIP PICKUP 2 00 V Hz TIME DIAL 0 1 RESET 0 1 ALARM PICKUP 2 00 V Hz ALARM TIME DELAY 0 0 Step 3 Apply 180 Vac at 60 Hz to the unit...

Страница 39: ...and 9 9 Recorded times should be as follows Setting Expected Time 3 0 3 0 0 075 seconds 9 9 9 9 0 099 seconds Inverse Square Timing Step 1 Connect the unit as shown in Figure 5 1 Step 2 Adjust the fro...

Страница 40: ...s follows Setting Elapsed Time 1 0 20 3 seconds 0 0 200 20 seconds Step 5 Repeat steps 3 and 4 with input conditions of 180 Vac at 60 Hz M 1 5 Elapsed times should be as follows Setting Elapsed Time 0...

Страница 41: ...ay be purchased locally The quality of replacement parts must be at least equal to that of the original components Where special components are involved Basler Electric part numbers may be obtained fr...

Страница 42: ...cted to ten coaxial binding posts The ten fingers on the black side are connected to the inner binding posts black thumb nuts and tap into the relay internal circuitry The ten fingers on the red side...

Страница 43: ...onds on the x axis 12599 10 30 92 D Corrected power supply types in Section 1 Specifications Power Supply added burden data UL recognized data and corrected RFI data Changed Section 3 Functional Descr...

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