DP-300 Current Differential Protection Relay Technical Data

New Information

Description 1. Applications . . . . . . . . . . . 2. Description. . . . . . . . . . . . 3. Dimensions . . . . . . . . . . . 4. Wiring Diagram . . . . . . . . . 5. Transformer Vector Groups 6. Tripping Characteristics . . . 7. Technical Data . . . . . . . . .

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APPLICATIONS The DP-300 offers a three-phase current differential protection for generators, motors, and two winding transformers. DESCRIPTION The current flowing in the individual conductors is measured by means of current transformers installed on both sides of the protection zone. These transformers form the limits of the protection zone. By means of freely configurable relays, the unit will indicate if any of the adjusted fault current limits have been exceeded. The unit counts with a slope characteristic to prevent operation due to CT ratio mismatches, CT ratio errors, CT saturation, and errors because of tap changes. For transformer applications, the unit has 2nd and 5th harmonic restraints to prevent misoperation in case of inrush currents caused for energization or over excitation of the transformer. When used in transformer applications, the DP-300 allows you to change the phase shift of the transformer, without having to worry about changing the connection of the external CTs, via selecting the vector group in the display. The different nominal currents of the high and low voltage side of the transformer, as well as the transformer ratio, may be configured. Every measuring point may be set separately. These features permit the DP-300 to be universal in its applications. The DP-300 permits design simplification of the switchgear cabinet, facilitates the commissioning, ensures the operation of the system, is user friendly, and increases the availability of the system. IL

FEATURES • True RMS 6× current measurement, three-phase system on both sides of the protected zone • Secondary current transformer output available as ../1 A or ../5 A • Configurable trip set points for – differential current (Id) – restrain current (Is) • Configurable delays • Four alarm relays • Three discrete inputs (for blocking, acknowledgment, and configuration) • Two-line LC display • Configurable transformer ratio • Configurable vector group • Transformer inrush detection/suppression • Individual configuration of the nominal current for the high-and low-voltage side of the transformer • Configurable transformer ratio separated for currents of highand low-voltage side of the transformer

IL or

Ia

or

or

Ib

A)

Ia

or

Ib

B)

Schematic Circuit Diagrams (Single Phase Version): A) Fault Outside the Protection Area B) Fault Inside the Protection Area

Figure 1. Protected Area Principle: Fault “A)” Outside=No Alarm Fault “B)” Inside=Alarm.

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EATON CORPORATION Cutler-Hammer DP-300 Current Differential Protection Relay Technical Data TD02602009E Effective: October 2007

DIMENSIONS

Figure 2. DP-300 Dimensions.

EATON CORPORATION Cutler-Hammer DP-300 Current Differential Protection Relay Technical Data TD02602009E

©Copyright 2007

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WIRING DIAGRAM

Figure 3. DP-300 Wiring Diagram.

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EATON CORPORATION Cutler-Hammer DP-300 Current Differential Protection Relay Technical Data TD02602009E Effective: October 2007

TRANSFORMER VECTOR GROUPS

Table 1. Transformer Vector Groups VECTOR GROUP

Yd5

HV:

-circuit arrangement, LV: Δ-circuit arrangement, 5 × 30° = 150°

Yy0

HV:

-circuit arrangement, LV:

Dy5

HV: Δ-circuit arrangement, LV:

-circuit arrangement, 0° -circuit arrangement, 5 × 30° = 150°

Dd0

HV: Δ-circuit arrangement, LV: Δ-circuit arrangement, 0°

Yz5

HV:

Dz0

HV: Δ-circuit arrangement, LV: Ζ-circuit arrangement, 0°

-circuit arrangement, LV: Ζ-circuit arrangement, 5 × 30° = 150°

Yd11

HV:

-circuit arrangement, LV: Δ-circuit arrangement, 11 × 30° = 330°

Yy6

HV:

-circuit arrangement, LV:

-circuit arrangement, 6 × 30° = 180°

Dy11

HV: Δ-circuit arrangement, LV:

-circuit arrangement, 11 × 30° = 330°

Dd6

HV: Δ-circuit arrangement, LV: Δ-circuit arrangement, 6 × 30° = 180°

Yz11

HV:

Dz6

HV: Δ-circuit arrangement, LV: Ζ-circuit arrangement, 6 × 30° = 180°

-circuit arrangement, LV: Ζ-circuit arrangement, 11 × 30° = 330°

TRIPPING CHARACTERISTICS

Y= 100

Id I

[%] Ia

N

Monitoring step 2, fixed limit (100 %)

Protected object

Ib IS =

Ia + Ib 2

Id = Ia - Ib

Monitoring step 2 (X12 = 100 % / Y2 = 35 %)

Monitoring step 2 fixed limit (85 %)

Monitoring step 1 (X12 = 100 % / Y1 = 10 %)

1= 2

Characteristic gradient (fixed) = 10 % X12, Y2 and Y1: adjustable

1

2

Monitoring step 1 fixed limit (85 %-Y2+Y1)

P (X12/Y2) P (X12/Y1)

35

X=

10

100

200

300

400

IS

[%]

IN

500

Figure 4. DP-300 Tripping Characteristics.

EATON CORPORATION Cutler-Hammer DP-300 Current Differential Protection Relay Technical Data TD02602009E

©Copyright 2007

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Relay Outputs ............................................................ Isolated -Contact Material .........................................................AgCdO -Resistive Load (GP) (VCont, Relay Output) AC........................................................ 2.00 Aac @ 250 Vac DC........................................................ 2.00 Adc @2 4 Vdc, ........................................................... 0.36 Adc @ 125 Vdc, ...........................................................0.18 Adc @ 250 Vdc, -Inductive Load (PD) (VCont, Relay Output) AC...............................................................................B300 DC........................................................ 1.00 Adc @ 24 Vdc, ........................................................... 0.22 Adc @ 125 Vdc, ............................................................ 0.10 Adc @ 250 Vdc

TECHNICAL DATA 1

4 1 2 3 4 5 6 7 8 9

3 2

5 S/N S/N S/N P/N REV Details Type Type UL

6 7 8

9

Serial Number (Numerical) Date of Production (YYMM) Serial Number (Bar Code) Item Number Item Revision Number Technical Data Description (Long) Description (Short) UL Sign

Figure 5. Typical DP-300 Nameplate

Specifications Measurements, Currents.............................................. Isolated -Measured Currents (Nominal Value IN) ........................... ../5 A -Measuring Frequency ......................................40.0 to 70.0 Hz -Accuracy ................................................................... Class 1 -Linear Measuring Range .............................................5.0 × IN -Maximum Power Consumption per Path................... < 0.15 VA -Rated Short Time Current (1 s) ................................ 30.0 × IN Ambient Conditions................................................................ -Voltage Supply ............................................ 90 to 250 Vac/dc -Intrinsic Consumption........................................... Max. 10 VA -Ambient Temperature Storage ......... -30 to 80°C (-22 to 176°F) Operational ..................................... -20 to 70°C (-4 to 158°F) -Ambient Humidity ................................. 95%, Non-condensing -Maximum Altitude........................................ 2000 m (6562 ft) -Degree of Pollution.............................................................. 2

Protective Functions............................................................... -Operating Time ........................................... Minimum 100 ms -Differential current ........................................... Minimum 10% Housing ............................................................................... -Type ................................................ APRANORM DIN 43 700 -Dimensions (W × H × D) ....................................... 144 × 96 × 132 mm ....................................................................... (5.67 × 3.78 × 5.20 in.) -Front Panel Cutout (W × H) ......................... 138 [+1.0] × 92 [+0.8] mm ......................................................(5.43 [+0.039] × 3.63 [=0.031] in.) -Terminals ............................... Screw-type, terminals depending ...................................... on connector, 2.5 mm² (0.00388 in.²) ...................................................... or 4.0 mm² (0.00620 in.²) -Recommended Tightening Torque ................[2.5 mm²] 0.5 Nm / ...........................................[4.0 mm²] 0.6 Nm ([0.00388 in.²] ................................... 4.43 in./lbs / [0.00620 in.²] 5.3 in./lbs) ........................... Use 60/75°C (140/167°F) Copper Wire Only ...................................... Use Class 1 Wire Only (or Equivalent) -Weight ................................. Approximately. 1,000 g (2.2 lbs.) Housing Protection ................................................................ -Protection System...........IP42 from Front with Correct Mounting ................................................... IP54 from Front with Gasket ........................................................(Gasket: P/N 8923-1038) ......................................................................IP20 from Back -Front Foil .................................................... Insulating Surface -EMC-Test (CE) ................Tested According to Applicable EN Guidelines -Listings ............... CE Marking; UL Listing for Ordinary Locations ...........................................UL/cUL Listed, Ordinary Locations, ..................................................................File No.: E231544 -Additional Approvals .................... IEEE C37.90.1 and C37.90.2

Digital Inputs.............................................................. Isolated -Input Range (VCont, Digital Input)................... Nominal Voltage .................................................................. 18 to 250 Vac/dc -Input Resistance .................................... Approximately 68 KΩ

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EATON CORPORATION Cutler-Hammer DP-300 Current Differential Protection Relay Technical Data TD02602009E Effective: October 2007

Notes

EATON CORPORATION Cutler-Hammer DP-300 Current Differential Protection Relay Technical Data TD02602009E

©Copyright 2007

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These technical data materials are published solely for information purposes and should not be considered all-inclusive. If further information is required, you should consult an authorized Eaton sales representative. The sale of the product shown in this literature is subject to the terms and conditions outlined in appropriate Eaton selling policies or other contractual agreement between the parties. This literature is not intended to and does not enlarge or add to any such contract. The sole source governing the rights and remedies of any purchaser of this equipment is the contract between the purchaser and Eaton. NO WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE OR MERCHANTABILITY, OR WARRANTIES ARISING FROM COURSE OF DEALING OR USAGE OF TRADE, ARE MADE REGARDING THE INFORMATION, RECOMMENDATIONS, AND DESCRIPTIONS CONTAINED HEREIN. In no event will Eaton be responsible to the purchaser or user in contract, in tort (including negligence), strict liability or otherwise for any special, indirect, incidental or consequential damage or loss whatsoever, including but not limited to damage or loss of use of equipment, plant or power system, cost of capital, loss of power, additional expenses in the use of existing power facilities, or claims against the purchaser or user by its customers resulting from the use of the information, recommendations and description contained herein.

Eaton Corporation Electrical Group 1000 Cherrington Parkway Moon Township, PA 15108 United States 877-ETN CARE (877-386-2273) Eaton.com

© 2007 Eaton Corporation All Rights Reserved Printed in USA Publication No. TD02602009E / TBG00161 October 2007