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9170800990 Rev M 

BE1-87G Functional Description 

3-3 

Comparator 

The comparator provides the variable percentage characteristic of the relay as follows. 

When I

R

  is less than nominal (5 Aac for sensing input range 1 or 1 Aac for sensing input range 2), the 

comparator provides an output signal whenever I

OP

 exceeds the front panel sensitivity setting. 

Restraint Current Less than Nominal 

When I

R

 is greater than nominal (5 Aac for sensing input range 1 or 1 Aac for sensing input range 2), the 

front panel sensitivity switch setting (threshold) is increased by adding it to a scaled value representing 
one half of I

R

 minus nominal (5 Aac for sensing input range 1 or 1 Aac for sensing input range 2). 

Restraint Current Greater than Nominal 

Output Relays 

When the current difference exceeds the variable percentage limit (sensitivity switch setting), the 
comparator output energizes the output relays. (In BE1-87G models with three-phase sensing, the 
outputs are ORed together so that the output relays energize  if the current difference of any one phase 
exceeds the limit.) When the current difference decreases below 90% of the variable percentage 
threshold, the output relays reset. 

The main output relay contacts are either normally-open or normally-closed and are accessed at case 
terminals 1 and 10. Normally-open contacts are provided on BE1-87G relays with a style number of xxE-
xxx-xxxxx and normally-closed contacts are provided on relays with a style number of xxG-xxx-xxxxx. 

Main Output Relay 

An optional pair of contacts, accessed at case terminals 2 and 5, can be specified. The auxiliary output 
contacts change state when the main output contacts operate and are available in a normally-open or 
normally-closed configuration. Normally-open auxiliary contacts are provided on BE1-87G relays with 
style number xxx-xxx-xxx1x and normally-closed auxiliary contacts are provided on relays with style xxx-
xxx-xxx2x. 

Auxiliary Output Relay (Optional) 

Optionally, the auxiliary output relay can be specified to function as a power supply status output. This 
normally-closed output is energized open during normal operation. When relay control power is lost or an 
internal power supply failure occurs, the relay de-energizes and closes the contacts at terminals 2 and 5. 

Target Indicators (Optional) 

Target indicators are optional components selected when a relay is ordered. The electronically latched 
and reset targets consist of red LED indicators located on the relay front panel. Latched targets are reset 
by operating the target reset switch on the front panel. If relay operating power is lost, any illuminated 
(latched) targets are extinguished. When relay operating power is restored, the previously latched targets 
are restored to their latched state. 

A relay can be equipped with either  internally operated targets or current operated targets. Both target 
types are reset by operating the target reset switch. 

The relay trip outputs are directly applied to drive the target indicators. The indicators are illuminated 
regardless of the current level in the trip circuits. 

Internally Operated Targets 

Current operated targets are triggered by closure of the corresponding output contact 

Current Operated Targets 

and

 

 the presence of 

at least 200 milliamperes of current flowing in the trip circuit. 

NOTE 

Prior to September 2007, the BE1-87G target indicators consisted of 
magnetically latched, disc indicators. These mechanically latched target 
indicators have been replaced by the electronically latched LED targets in use 
today. 

Содержание BE1-87G

Страница 1: ...170800990 P0046 18 PUSH TO ENERGIZE OUTPUT A B C B C D E F G A 0 02 0 32 0 16 0 1 0 08 0 04 0 03 POSITION AMPS SWITCH POWER BE1 87G GENERATOR DIFFERENTIAL RELAY Serial No H123456789101 Style No G2E A1...

Страница 2: ......

Страница 3: ...s and Indicators Functional Description Installation Testing and Setting WARNING To avoid personal injury or equipment damage only qualified personnel should perform the procedures in this manual NOTE...

Страница 4: ...cover all details and variations in equipment nor does this manual provide data for every possible contingency regarding installation or operation The availability and design of all features and optio...

Страница 5: ...nal numbering reference on page 1 4 last paragraph Corrected Figures 4 11 and 4 12 I This revision letter not used H 05 96 Added sensing input range 2 1 Aac nominal to the available models Changed hig...

Страница 6: ...0 86 Grammatical changes to specifications of Section 1 Changed comparator functional description in Section 3 Changed operational test procedure in Section 5 A 05 86 Added qualifications to specifica...

Страница 7: ...0 Rev M BE1 87G Introduction v CONTENTS SECTION 1 GENERAL INFORMATION 1 1 SECTION 2 CONTROLS AND INDICATORS 2 1 SECTION 3 FUNCTIONAL DESCRIPTION 3 1 SECTION 4 INSTALLATION 4 1 SECTION 5 TESTING AND SE...

Страница 8: ...vi BE1 87G Introduction 9170800990 Rev M This page intentionally left blank...

Страница 9: ...er Chart 1 3 Style Number Example 1 3 SPECIFICATIONS 1 4 Current Sensing Inputs 1 4 Stabilizer Reactor 1 4 Pickup 1 5 Operating Power Input 1 5 Output Contacts 1 6 Targets 1 6 Type Tests 1 6 Physical...

Страница 10: ...ii BE1 87G General Information 9170800990 Rev M This page intentionally left blank...

Страница 11: ...typically trip a lockout 86 relay which in turn trips the generator breaker and when present the field and or neutral breakers APPLICATION When used with current transformers CTs of an accuracy class...

Страница 12: ...1 2 BE1 87G General Information 9170800990 Rev M Figure 1 1 Typical Single Phase Application Scheme Figure 1 2 Typical Three Phase Application Scheme...

Страница 13: ...Minimizes dissimilar performance of system CTs Reactor can be located on the back of the relay or remotely from the BE1 87G for flexibility of system installation Variable restraint The variable restr...

Страница 14: ...c 1 Second Rating 250 Aac Frequency Range 45 to 65 Hz Burden 0 05 per input Nominal Rating 1 Aac Sensing Input Range 2 Maximum Continuous Rating 2 Aac 1 Second Rating 50 Aac Frequency Range 45 to 65 H...

Страница 15: ...er For IR 6 A 20 A max 8 of the operate pickup characteristic or 150 mA whichever is greater Sensing Input Range 2 For IR 0 8 A 5 of the operate pickup characteristic or 25 mA whichever is greater For...

Страница 16: ...ts In accordance with ANSI IEEE C37 90 passes one minute dielectric tests as follows Dielectric Strength All Circuits to Ground 2 121 Vdc Input Circuits to Output Circuits 1 500 Vac or 2 121 Vdc Quali...

Страница 17: ...7 Agency Recognition UL Recognition UL recognized per Standard 508 File E97033 NOTE Output contacts are not UL recognized for voltages greater than 250 volts GOST R Certification GOST R certified per...

Страница 18: ...1 8 BE1 87G General Information 9170800990 Rev M This page intentionally left blank...

Страница 19: ...trols and Indicators i SECTION 2 CONTROLS AND INDICATORS TABLE OF CONTENTS SECTION 2 CONTROLS AND INDICATORS 2 1 GENERAL 2 1 Figures Figure 2 1 Controls and Indicators 2 1 Tables Table 2 1 Control and...

Страница 20: ...ii BE1 87G Controls and Indicators 9170800990 Rev M This page intentionally left blank...

Страница 21: ...when the restraint current is less than or equal to the nominal value of sensing current 5 Aac for sensing input range 1 or 1 Aac for sensing input range 2 C Power Indicator This LED lights when oper...

Страница 22: ...2 2 BE1 87G Controls and Indicators 9170800990 Rev M This page intentionally left blank...

Страница 23: ...ent Sensing Inputs 3 1 Stabilizing Reactor 3 1 Band Pass Filters 3 2 Comparator 3 3 Output Relays 3 3 Target Indicators Optional 3 3 Output Test Pushbutton 3 4 Power Supply 3 4 Figures Figure 3 1 Func...

Страница 24: ...ii BE1 87G Functional Description 9170800990 Rev M This page intentionally left blank...

Страница 25: ...1x xxx xxxx require CTs with 5 Aac secondary windings Relays with sensing input range 2 style x2x xxx xxxx require CTs with 1 Aac secondary windings Two CTs are used on each phase one CT on each side...

Страница 26: ...ccur during synchronization or asymmetrical faults Two band pass filters are used difference and sum The output of the difference band pass filter is applied to a full wave rectifier The rectifier sca...

Страница 27: ...are available in a normally open or normally closed configuration Normally open auxiliary contacts are provided on BE1 87G relays with style number xxx xxx xxx1x and normally closed auxiliary contacts...

Страница 28: ...on is pressed by insertion of a thin non conducting rod through the button access hole in the front panel Power Supply Relay operating power is developed by a wide range isolated low burden switching...

Страница 29: ...Single Ended Case 4 6 Figure 4 6 Outline Dimensions Side View Projection Mounted Double Ended Case 4 7 Figure 4 7 Outline Dimensions Side View Projection Mounted Single Ended Case 4 8 Figure 4 8 Outl...

Страница 30: ...ii BE1 87G Installation 9170800990 Rev M This page intentionally left blank...

Страница 31: ...4 4 and 4 5 Figure 4 4 illustrates a side view of the case dimensions for a double ended semi flush mounted case Figure 4 5 illustrates a side view of the case dimensions for a single ended semi flus...

Страница 32: ...4 2 BE1 87G Installation 9170800990 Rev M Figure 4 1 Panel Cutting and Drilling Dimensions Semi Flush Mounting Double or Single Ended Case...

Страница 33: ...9170800990 Rev M BE1 87G Installation 4 3 Figure 4 2 Panel Drilling Dimensions Projection Mounting Double Ended Case...

Страница 34: ...4 4 BE1 87G Installation 9170800990 Rev M Figure 4 3 Panel Drilling Dimensions Projection Mounting Single Ended Case...

Страница 35: ...9170800990 Rev M BE1 87G Installation 4 5 Figure 4 4 Outline Dimensions Side View Semi Flush Mounted Double Ended Case D2853 22 06 15 99...

Страница 36: ...4 6 BE1 87G Installation 9170800990 Rev M Figure 4 5 Outline Dimensions Side View Semi Flush Mounted Single Ended Case D2853 23 06 15 99...

Страница 37: ...9170800990 Rev M BE1 87G Installation 4 7 Figure 4 6 Outline Dimensions Side View Projection Mounted Double Ended Case...

Страница 38: ...ation 9170800990 Rev M Figure 4 7 Outline Dimensions Side View Projection Mounted Single Ended Case P0002 18 12 07 01 DETAIL A A SHOWING THE ADDITION OF WASHERS OVER THE BOSS TO TIGHTEN THE RELAY AGAI...

Страница 39: ...9170800990 Rev M BE1 87G Installation 4 9 Figure 4 8 Outline Dimensions Rear View Double Ended Mounting Case...

Страница 40: ...4 10 BE1 87G Installation 9170800990 Rev M Figure 4 9 Outline Dimensions Rear View Single Ended Mounting Case...

Страница 41: ...9170800990 Rev M BE1 87G Installation 4 11 Figure 4 10 Outline Dimensions Front View Case Cover...

Страница 42: ...4 12 BE1 87G Installation 9170800990 Rev M Figure 4 11 Overall Dimensions Stabilizing Reactor Figure 4 12 Outline Dimensions Side View Semi Flush Mounted Case with Attached Stabilizing Reactor...

Страница 43: ...Figure 4 13 Internal connections terminal assignments for a three phase relay are illustrated in Figure 4 14 These figures may show options that may not apply to your relay Control Connections Typica...

Страница 44: ...4 14 BE1 87G Installation 9170800990 Rev M Figure 4 13 Internal Connections Terminal Assignments Single Phase Relay...

Страница 45: ...9170800990 Rev M BE1 87G Installation 4 15 Figure 4 14 Internal Connections Terminal Assignments Three Phase Relay...

Страница 46: ...4 16 BE1 87G Installation 9170800990 Rev M Figure 4 15 Typical DC Control Connections...

Страница 47: ...9170800990 Rev M BE1 87G Installation 4 17 Figure 4 16 Single Phase Sensing Connections...

Страница 48: ...4 18 BE1 87G Installation 9170800990 Rev M Figure 4 17 Three Phase Sensing Connections Wye Connected Generator...

Страница 49: ...9170800990 Rev M BE1 87G Installation 4 19 Figure 4 18 Three Phase Sensing Connections Delta Connected Generator...

Страница 50: ...terminal connections to ensure that they are clean and tight If repairs are needed contact the Technical Sales Support department at Basler Electric for assistance STORAGE This device contains long li...

Страница 51: ...THE RELAY 5 7 Terms for Calculations 5 7 CT Quality 5 8 Burden Limit 5 8 Relative CT Performance 5 8 Setting Example 1 5 8 Setting Example 2 5 9 Figures Figure 5 1 Location of Stabilizing Reactor Byp...

Страница 52: ...ii BE1 87G Testing and Setting 9170800990 Rev M This page intentionally left blank...

Страница 53: ...nt current applied to any one relay input must not exceed either of the following conditions 10 amperes continuous or 250 amperes for 1 second relay style number x1x xxx xxxxx 2 amperes continuous or...

Страница 54: ...supply for current operated targets Single Phase A Phase Trip and Dropout Test Perform the following steps to test the trip and dropout accuracy of relays with single phase sensing style number Sxx x...

Страница 55: ...xxx xxxxx or IR 1 ampere for style number x2x xxx xxxxx the tolerance is 0 05 IOP or 25 mA whichever is greater For IR nominal up to a maximum of 20 amperes for style number x1x xxx xxxxx or 4 amperes...

Страница 56: ...5 4 BE1 87G Testing and Setting 9170800990 Rev M Figure 5 3 Operating Characteristics Relay Style x1x xxx xxxxx...

Страница 57: ...9170800990 Rev M BE1 87G Testing and Setting 5 5 Figure 5 4 Operating Characteristics Relay Style x2x xxx xxxxx...

Страница 58: ...Rev M Figure 5 5 Extended Restraint Operating Characteristic Figure 5 6 Pickup Response Timing RESTRAINT CURRENT AMPERES OPERATING CURRENT AMPERES 0 2 4 8 6 10 12 14 16 18 20 0 5 10 15 20 25 30 35 40...

Страница 59: ...rent pickup over the restraint current range Assuming that the CTs on both sides of the zone generator motor or reactor perform identically operating current will be equal to zero The sensitivity sett...

Страница 60: ...0 2 0 4 0 4 0 5 0 8 100 0 2 0 2 0 4 0 4 0 5 200 0 1 0 1 0 2 0 4 0 5 200 0 1 0 1 0 2 0 4 0 5 Note Use next higher setting if CTs are a mix of C classification and T classification The saturation factor...

Страница 61: ...will rapidly dampen any offset current component Accordingly determine the sub transient current I d rating CT I d 6 4 30 8 138 200 15 0 3 16 4 1000 Since a three phase fault is involved one way lead...

Страница 62: ...5 10 BE1 87G Testing and Setting 9170800990 Rev M Figure 5 8 Generator Differential Application...

Страница 63: ......

Страница 64: ...ROUTE 143 BOX 269 HIGHLAND IL 62249 USA http www basler com info basler com PHONE 1 618 654 2341 FAX 1 618 654 2351...

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