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AC GENERATOR SHORT CIRCUIT AND OVER CURRENT GUARD

Three phaseCurrentProtectionwithVATOR, Definite timeor Two levelO/C trip function

PREDICTOR function, TheBlackoutPreventer

Pathfinder function eases fault finding

Independent ammeter with Full Load Current (FLC) mark onscale

Triple relay operationgivesmore flexibility

FastanaloguemAoutput (KEC116xversions)

The digitally controlled true RMS measurement provides precision (1,0%) three phase currentprotection for AC generators, motors, transformers etc. for alarms or tripping of a non-essentialload orbreaker.

The independent class 1,5 moving iron ammeter input (term. 26 & 27) be externally connected orswitched to read individual phase currents.

MUST

User settable trip levels and delays. LEDs flash during countdown and indicate the alarm status. The"Pathfinder" function identifies the phase causing the trip by the flashing pattern of the LED.

KEC116x models have a fast response (

Innovation Beyond TraditionELECTRONIC CO NTR OL AND IN STRU M ENTAT ION

KEC115E -KEC116EShort Circuit and OverCurrent VATOR GuardO/C VATOR and definite time S/C trip delays maintain discrimination betweenparallelled generators. The fail-safe relay R3 (O/C should be used toopen the generator breaker. R1 (S/C) and R2 (O/C) can be used for localindication, alarm systemorPM-Systemetc.All relays latch after trip.

& S/C)

Description Relay Operation

AC GENERATOR SHORT CIRCUIT AND OVER CURRENT GUARD KEC115x/116x

KEC115E2 -KEC116E2Short Circuit and OverCurrent VATOR GuardO/C VATOR and definite time S/C trip delays. R2 (O/C) and the fail-safe relayR1 (S/C) should be used to open the generator breaker. The common alarmrelay R3 (S/C & O/C) can be used for local indication, alarm system or PM-System etc.All relays latch after trip.

KEC115F -KEC116FShort Circuit and OverCurrent Guard

classic

or

Replaces the KEC115. Definite time O/C and S/C trip delays. Fail-safe S/C relay. All relays latch after trip. Either R1 (S/C) and R2 (O/C) can beused to trip generator breaker with R3 as a common alarm R3 can trip thegenerator breaker with R1/R2 used for local indication, PMS or alarm systeminput etc.

KEC115F2 -KEC116F2Short Circuit and OverCurrent Guard

orDefinite time O/C and S/C trip delays. Either R1 (S/C) and R2 (O/C) can beused to trip generator breaker with R3 as a common alarm R3 can trip thegenerator breaker with R1/R2 used for local indication, PMS or alarm systeminput etc. NON fail- safe latching relays. Since all relays are NON fail-safe thisversion is only suitable as a replacement for older installations.

KEC115G -KEC116GShort Circuit and OverCurrent Guard

emergency/harbour.

For marine generator sets. Definite time O/C and S/Ctrip delays Non-latching O/C trip relay (R2) and non-failsafe S/C trip relay(R1). If an engine is set as an emergency generator only R1 (S/C) shall beused to open the generator breaker as per the requirements of classificationsocieties. In harbour operation both relay R1 and R2 shall open the breaker.R3 operates on both S/C and O/C and can be used for alarm systeminput etc.

KEC115EKEC116E

S/C O/C1

O/C2

FailSafe

Latch DefiniteTime S/C

DefiniteTime O/C

VATOR Predictor

R1 R2 R3

KEC115E2KEC116E2

S/C O/C1

O/C2

FailSafe

Latch DefiniteTime S/C

DefiniteTime O/C

VATOR Predictor

R1 R2 R3

KEC115FKEC116F

S/C O/C1

O/C2

FailSafe

Latch DefiniteTime S/C

DefiniteTime O/C

VATOR Predictor

R1 R2 R3

KEC115F2KEC116F2

S/C O/C1

O/C2

FailSafe

Latch DefiniteTime S/C

DefiniteTime O/C

VATOR Predictor

R1 R2 R3

KEC115GKEC116G

S/C O/C1

O/C2

FailSafe

Latch DefiniteTime S/C

DefiniteTime O/C

VATOR Predictor

R1 R2 R3

Depending on application, select the model that matches the electrical installation. If none of the listed models fit your purpose please contact Megacon for customer adaptation.

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Innovation Beyond TraditionELECTRONIC CO NTR OL AND IN STRU M ENTAT ION

AC GENERATOR SHORT CIRCUIT AND OVER CURRENT GUARD KEC115x/116x

KEC115H -KEC116HShort Circuit and 2-level Over Current Predictor Guard2-level O/C settings. Definite time O/C and S/C trip delays. Instead of theVATOR function the H-versions have 2 over current set trip levels to reduce triptime in high over load situations. "Predictor" early action on relays R1 and R2,both relays will trip after full set O/C S/C time. R3 is delayed and will trip afterfull set O/C time + 1sec S/C time +200mS. R3 is used to open the generatorbreaker. R1 or R2 are used for bus-tie breaker opening or for preference loadtripping.

oror

Description

KEC115P -KEC116PShort Circuit, VATOR OverCurrentand PredictorGuardThe best choice for diesel electric systems to prevent totally black out. VATORO/C trip delay. Fail safe and latching R3. "Predictor" early action on relays R1and R2, R2 will trip after full set O/C and R1 after full set S/C time. R3 isdelayed and will trip after full set O/C time + 1sec S/C time + 200mS. R3 isused to open the generator breaker. R1 and/or R2 are used for bus tie breakeropening, preference load tripping, PMSor alarmsysteminputetc.

or

KEC115P2 -KEC116P2Short Circuit and OverCurrent GDefinite time O/C and S/C trip delays. Fail safe and latching R3. "Predictor"early action on relays R1 and R2, both relays will trip after full set O/C S/Ctime. R3 is delayed and will trip after full set O/C time + 1sec S/C time +200mS. R3 is used to open the generator breaker. R1 and/or R2 are used forbus tie breaker opening, preference load tripping, PMS or alarm system inputetc.

oror

Predictor uard

KEC115P3 -KEC116P3Short Circuit and OverCurrent Predictor Guard (S/C only)Definite time O/C and S/C trip delays. Fail safe and latching R3. "Predictor"early action on relay R1 and R2, both relays will trip after full set S/C time. R3 isdelayed and will trip after full set O/C time + 1sec S/C time + 200mS. R3 isused to open the generator breaker. R1 and R2 are used for bus tie breakeropening, preference load tripping, PMSor alarmsysteminputetc.

or

KEC115HKEC116H

S/C O/C1

O/C2

FailSafe

Latch DefiniteTime S/C

DefiniteTime O/C

VATOR Predictor

R1 R2 R3

KEC115H5 -KEC116H5Short Circuit and 2-level OverCurrentPredictorGuard2-level O/C settings. Definite time O/C trip delays. "Predictor" early action onR1 and R2 , both relays will trip after full set O/C S/C time. R3 is delayed andwill trip after full set O/C time + 1sec S/C time + 200mS. R3 is used to openthe breaker. R1 is used for bus-tie breaker opening or for preference loadtripping.

oror

KEC115H5KEC116H5

S/C O/C1

O/C2

FailSafe

Latch DefiniteTime S/C

DefiniteTime O/C

VATOR Predictor

R1 R2 R3

KEC115H4 -KEC116H4Short Circuit and 2-level OverCurrentGuard2-level O/C settings. Definite time O/C and S/C trip delays. Instead of theVATOR function the H-versions have two over current set trip levels to reducetrip time in high over load situations. All relays will trip after full set time.Individual alarmrelay outputs give flexibility for a variety ofapplications.

KEC115H4KEC116H4

S/C O/C1

O/C2

FailSafe

Latch DefiniteTime S/C

DefiniteTime O/C

VATOR Predictor

R1 R2 R3

KEC115PKEC116P

S/C O/C1

O/C2

FailSafe

Latch DefiniteTime S/C

DefiniteTime O/C

VATOR Predictor

R1 R2 R3

Relay Operation

KEC115P2KEC116P2

S/C O/C1

O/C2

FailSafe

Latch DefiniteTime S/C

DefiniteTime O/C

VATOR Predictor

R1 R2 R3

KEC115P3KEC116P3

S/C O/C1

O/C2

FailSafe

Latch DefiniteTime S/C

DefiniteTime O/C

VATOR Predictor

R1 R2 R3

Depending on application, select the model that matches the electrical installation. If none of the listed models fit your purpose please contact Megacon for customer adaptation.

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Company NO. 911198584Registered Address: vre Krkenes 17, N-5152 Bnes, Norway Innovation Beyond TraditionELECTRONIC CO NTR OL AND IN STRU M ENTAT ION

ORDERING EXAMPLE:Type: KEC116PAux. Supply:Input Current CT:Range: 0-1,5/3kAAnalogue O/P: O/P 3:4-

200-240V1500/5A

20mA

DIN96

PANELCUTOUT92 x92mm

1.25 to 8mmthick

96mm

89mm108mm

121314151617181920

22

2130

3132

C o m po rt

2627

12

3

4

5678910

Analogue Output

The has an analogue output proportional to the highest up ampere-meter reading. The signal is specifically intended as an input to a controlsystemfor ampere monitoring, load sharing, load shedding etc.

Add suffix fromtable below to type designation to specify outputrequired:

O/P1 O/P6O/P2 O/P7O/P3 O/P8O/P4 N/A O/P9O/P5 O/P10

KEC116x

0 - 10mA0 - 20mA4 - 20mA 0 - 10V

0,2 - 10V4,3 - 20mA

N/AN/A

N/A

Relay ResetAny latched relay is reset by linking terminals 30 and 31 or by interrupting thevoltage input to terminal 1.

The MEGACON policy is one of continuous improvement, consequentlyequipment supplied may vary in detail from this publication.

AC GENERATOR SHORT CIRCUIT AND OVER CURRENT GUARD KEC115x/116x

Pathfinder FunctionWhen either short circuit or over current trips have operated the relevant LEDwill flash in the following pattern to indicate the phase producing the trip.

VATOR function - Variable Time Over-current Release

Release characteristic combining definite time and dynamic response tomaintain thermal capability protection and selective protection betweenparalleled generators.

AmmeterInpu t

Analogue O/P(Optional)

22

21

L3 L2 L1

1

2

3

4

26

27

5

6

10

9

8

7

12

1716

1514

13

1819

20

DCAux(Optional)32

31

30

SUPPLY

R1

R3

R2

KEC115xKEC116x

Reset

+

-

+

-

Relays shown de-energised,a fail-safe relay energiseswhen the unit is powered.

L1(R)L2(S)L3(T)

Red indicates LED on

100

75

Definitetime

Definitetime

8% of setdelay ormin 1sec

50

25

8

0 150 %Inom 200

%of any

settimedeley

Over Currentrelease

characteristic

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