LogicLab s.r.l. - DV926 Neutral Overcurrent Relay

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Neutral Overcurrent Relay

Brochure DV926 (not available)

Maximum neutral current for the control of the neutral MT in systems with Petersen coil

ENEL Device certified

Device introduction

Documentation

Technical data

Multimedia

Download

Neutral Overcurrent Relay - Device introduction

The device DV926A2NCI is conforms to the specific ENEL DV1026A2NCI. The device performs the function of protection of maximum homopolar current with one trip threshold time-independent.

This protection was designed to control the neutral MV systems with Petersen coil.

The protection setup and the information reading concerning its operation are made through PC connected to a serial interface RS232.

In addition, through a Dip-Switch on the front panel of the device, you can set the rated current at 1A or 5A.

Neutral Overcurrent Relay - Documentation

User Guide (italian version)

If the English version is not available, contact us and we will provide the document that you have requested.

To download from the website the User Guide it is necessary to have a user name and password.
The user name and password may be requested by filling out the request form at download page

Neutral Overcurrent Relay - Technical data

Power supply

Power supply voltage: 110V DC ± 20%

Medium power: 3W

Maximum power: 4W

Voltage dips and short interruptions

Insensitive to 100% of Vaux for 50 ms (min)

Insensitive to 50% of Vaux for 100ms (min)

Dimensions

Height: 3U (montaggio armadio rack 19”)

Width: 6”

Depth: <30 cm

Rated current In 1A/5A

Functional features

Rated current switch: 1A/5A

Trip threshold (51.N) - Range: (0,02-1)In - step 0,01In

Accuracy: <5%

Trip delay time range (T51N): (0,04-2)s - step 0,01s

Time accuracy: <3%±20ms

Falling time <100ms

Phase power dissipation: <0,2VA

Resolution: 10 bit

Signal relay 51N.Avv

Dielectric strength 3300V DC (1 min)

Rated voltage: 110V

Rated current: 5A

Switching capacity (L/R=40ms): 0,2A @110V

Mechanical endurance: ≥10⁶

Trip relay 51N.S

Dielectric strength 3300V DC (1 min)

Rated voltage: 110V

Rated current: 5A

Switching capacity (L/R=40ms): 0,2A @110V

Mechanical endurance: ≥10⁶

Communication and software

Isolated serial connection (Dielectric strength 2500Vrms)

Setup with PC connection (threshold, trip falling ratio, delay time)

Software SpyDV926 included.

Technical documentation and Standards compliance

IEC 60255-5-8 level 4

IEC 60255-5-6 level 4

IEC 60255-5-7 level 4

CEI EN 61000-6-1

CEI EN 61000-6-2

ENEL R CLI 01

ENEL DV1500

ENEL DV1501A

Neutral Overcurrent Relay - Multimedia

Neutral Overcurrent Relay - Download

SpyDV926 (italian version)

If the English version is not available, contact us and we will provide the software that you have requested.

To download from the website it is necessary to have a user name and password.
The user name and password may be requested by filling out the request form at download page