Power Protection Relays

Digital Remote Tripping Judgement Device

BPT003 Series

Digital Remote Tripping Judgement Device

1 Introductions

BPT003 is digital remote tripping local judgment series device based on 32-bit microprocessor,it also has functions of over voltage protection, and over voltage send signal to start remote tripping.

1.1 Application scope

Over voltage protection;

Over voltage send signal to start remote tripping;

Local judgment for remote tripping of line transformer unit, short circuit at transformer LV side;

Local judgment for remote tripping of shunt reactor protection, without high voltage breaker;

Local judgment for intertripping at both sides of long line;

Local judgment for remote tripping of breaker failure protection in one and a half breaker connection system;

Other occasions where local judgment for remote tripping is needed.

1.2 Functions and technical characteristic

User programming with 12 judgment elements, visual and convenient;

The transceiver cooperated with BPT003 can either have pilot signal or not; The working mode of channel receiving signal can be either the AND or the OR; BPT003 has multiple tripping exit mode;

BPT003A device has optical fiber signal transmission function;

BPT003 has high reliability. The effective anti-interference and self-examination measures are considered in software and hardware designs, additional anti-interference modules for AC and DC inputs are not necessary in the panel assembling. The device adopts the back-inserting structure and special shielding measures; it can undergo electrostatic discharge interference test (level IV) and fast-transient pulse group disturbance test (level IV).

Large screen and user friendly Man-machine interface, report and printing, large capacity event recording and disturbance recording

Four independent communication ports (Ethernet port and 485 port) and one printer port available for communicating with substation automation system flexibly;

Function of GPS time-calibration.

2 Technical Parameters

2.1 Rated data

2.1.1 Rated DC voltage: 220V or 110V (specify when order)

2.1.2 Rated AC data:

a) Phase voltage 100 / 3 V

b) AC Current 5A or 1A (specify when order)

c) Rated frequency 50Hz

2.1.3 Power consumption

a) DC circuit ≤ 40W

b) AC voltage circuit ≤ 0.5VA/Φ

c) AC current circuit ≤ 0.5VA/Φ

2.1.4 Binary

a) Input voltage of CPU & communication interface modules

24V(18V~30V)

b) Input voltage of GPS sync pulse

24V(18V~30V)

c) CPU output voltage allowed (Light-coupled output)

24V(18V~30V)

2.2 Main technical performance

2.2.1 Accurate working range of sampling circuits (1% error)

a) Phase voltage 0.2 V-120V

b) Current 0.04In-40In

2.2.2 Connection points capacity

a) Carrying capacity of signal circuit DC220V,5A

b) Breaking capacity of signal circuit DC220V,60W

2.2.3 Analog measuring precision

a) Current, voltage 0.2 grade b) Power 0.5 grade c) Frequency 0.02 Hz

2.2.4 Action time:

a) Inherent action time of remote-tripping judgment: (20~40)ms b) Inherent action time of over voltage protection: ≤30ms

2.3 Insulation

2.3.1 Insulation resistance

   Under normal test environment, the insulation resistance between any energized or non-energized part and the case, or between any circuits, which are not electrically connected to

each other, is not less than 50MΩ when tested by megger with 500V open-circuit voltage.

2.3.2 Dielectric intensity

Under normal test environment, BPT003 can undergo the withstand-voltage test (frequency:50Hz; voltage: 2000V; duration: 1min) without breakdown or flashover. During the test, when the test voltage is exerted on a circuit, all other circuits are connected together to earth.

2.3.3 Impulsive voltage

Under normal test environment, BPT003 can undergo the standard lightning-surge test of 1.2/50µs between the power-supply input circuit or AC input circuit or output contact circuit and the ground, or between the circuits. The open circuit test voltage is 5kV.

2.3.4 Humid heat endurance

BPT003 has passed the humid heat endurance test stipulated in chapter 20 of GB7261. The highest test temperature is +40℃, the highest humidity is 95%, and the test duration is 48 hours. The period of cycling humid heat test is 24 hours. Within 2 hours before the end of test, the

measurements required in section 2.3.1 and in section 2.3.2 are acquired. The insulation resistance between any circuit and the revealed non-energized metal part or case, or between any circuits,

which are not electrically connected to each other, should not be less than 1.5MΩ. The dielectric

voltage-withstand intensity should not be less than 75% of the test voltage stipulated in section

2.3.2.

2.4 EMC capability

2.4.1 Electrostatic discharge interference

BPT003 has passed the electrostatic discharge interference test of GB/T 17626.2-1998 standard, level 4(15kV space electrostatic discharge interference or 8kV contact electrostatic discharge interference).

2.4.2 Radio frequency interference

BPT003 has passed the radio frequency interference test of GB/T 17626.3-1998 standard, level 3.

2.4.3 Fast-transient pulse group disturbance

BPT003 has passed the fast-transient pulse group disturbance test of GB/T 17626.4-1998 standard, level 4.

2.4.4 Surge (impulsive) interference

BPT003 has passed the surge (impulsive) interference test of GB/T 17626.5-1998 standard, level 3.

2.4.5 Radio field transmission annoyance

BPT003 has passed the radio field transmission annoyance test of GB/T 17626.6-1998 standard, level 3.

2.4.6 Power-frequency magnetic field interference

BPT003 has passed the power-frequency magnetic field interference test of GB/T 17626.8-1998 standard, level 5.

2.4.7 Pulse magnetic field interference

BPT003 has passed the pulse magnetic field interference test of GB/T 17626.9-1998 standard, level 5.

2.4.8 Damping oscillation magnetic field interference

BPT003 has passed the damping oscillation magnetic field interference test of GB/T17626.10-1998 standard, level 5.

2.4.9 Oscillating wave field interference

BPT003 has passed the oscillating wave field interference test of GB/T 17626.12-1998 standard, level 4.

2.4.10 Radiation emission limit test

BPT003 has passed the radiation emission limit test of GB 9254-1998 standard, type A.

2.5 Mechanical performance

2.5.1 Vibration

BPT003 can undergo the vibration durability test stipulated in section 16.3 of GB 7261 standard, severity class-I.

2.5.2 Impact

BPT003 can undergo the impact durability test stipulated in section 17.5 of GB 7261 standard, severity class-I.

2.5.3 Collision

BPT003 can undergo the collision durability test stipulated in chapter 18 of GB 7261 standard, severity class-I

   

2.6 Environment Conditions

2.6.1 Ambient temperature :-5~ +40 or -10 ~+55 (specified on order)

-25~+ 70 (Storage and transportation)

2.6.2 Relative humidity:

2.6.3 Atmosphere pressure:

5%~95%

66~110kPa

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