Download DP-300 Current Differential Protection Relay

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 . . . . . . . . .
Page
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 2
. 2
. 3
. 4
. 5
. 5
. 6
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.
2
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
3
WIRING DIAGRAM
Figure 3. DP-300 Wiring Diagram.
4
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
5
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
6
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
7
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