ZHEJIANG HUAYANG ELECTRIC CO., LTD.
Digital Overcurrent Relay

Digital Overcurrent Relay

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Digital Overcurrent Relay

Model No: EOCR-SSD

Digital Overcurrent Relay EOCR-SSD finds usage for detecting the flow of current, when it gets exceeded from a particular level. Only a single operated current is used in this type of element without the usage of any voltage coil that is required for building the protective relay. It is capable of withstanding diverse industrial conditions to be used in the different engineering applications.

Protection:

Potective Item

Trip Time

Description

Over-current

O-Time

Is<In

Phase Loss

3 sec

[(MAX – MIN) / MAX] x 100>90

Locked Rotor

0.5sec after elapse dt

3 times OC setting value


Over-current Setting

Current

05

0.5 ~ 6A


30

3 ~ 30A

60

10 ~ 60A

Starting delay time

D-Time

1 ~ 30sec

Trip time

O-Time

0.5, 1 ~ 10sec

Reset

Manual / Electrical

Operating t-c characteristic

Over-current

Definite

Tolerance

Current

|<1A: ± 0.05A, | 1A: ± 5%

Time

T 3S: ± 0.2s, t>3s: ± 5%

Environment

Temperature

Operation

-20°C ~ 60°C

Store

-30°C ~ 80°C

Humidity

30~85% RH non-condensing

Control Power

·110: 11VAC ± 15%, 50/60Hz

·220: 220VAC ± 15%, 50/60Hz

·440: 440VAC ± 15%, 50/60Hz

·24: 240VAC/DC

Output Relay

2-SPST

3A / 250VAC, Resistive

Insulation

Between casing and circuit

Over 10MΩ , DC500V

Dielectric Strength

Between casing and circuit

2000VAC 60Hz, 1min

Between open contacts

1000VAC 60Hz, 1min

Between circuit

2000VAC 60Hz, 1min

Installation


35mm Din Rail or Panel Mounting


Model

EOCR-3DE

EOCR-3EZ

Over Current Setting Range

Refer Table #1


Ground Fault Current Setting

-

0.02 ~ 3A

Alert Setting

50 ~ 100% / OFF -

Start Delay Time Setting (D-TIME)

1 ~ 200 Sec

Trip Delay Time Setting (O-TIME) INV

1 ~ 30

DEF

0.2 ~ 30 Sec

Control Voltage

24VAC/DC, 110VAC±15%, 220VAC±15%

Output Relay

1-SPST

2-SPST


AL/GR

AL Relay


Rating

3A/250VAC Resistive

Time Characteristic

In/”tc”mode

Inverse (See Curve-1)


dE/”tc”mode

Definite (See Curve-2)

Troubleshooting / Trip Indication

LED Display (SSD+LED)

Current Sensing

3-CT

Mounting

35mm Din-rail

  • MCU(Micro Controller Unit) based / 2-CT Type
  • Real Time Processing / Higher Precision
  • Current Setting Range – 05 Type: 0.5 ~ 6A / 30 Type: 3 ~ 30A / 60 Type: 10 ~ 60A
  • Digital display: trip cause / easy troubleshooting
  • Rest: Manual(instantaneous) / Electrical(remote)
  • Load selection by DIP switch: Single phase(1P) / Three phase(3p)
  • Fail safe(N) / Non- fail safe(R)
Features
  • Compact Design
  • 3DM : Panel Mounting Type
  • MCU(Microprocessor Control Unit) & ASIC Based
  • 3 Integral Current Transformers
  • Multiple Protection Functions
  • Digital Ammeter
  • Troubleshooting / Trip Cause Memory, Display
  • Adjustable Operating Features by Pulse Rotary switch
  • Wide Current Adjustment Range
  • Selectable Time-Current Characteristics (Inverse / Definite)
  • Manual Instantaneous / Electrical Remote Auto Reset
  • Test Function
  • Ambient Insensitive
  • Selectable Fail-safe and Non-fail-safe Operation Modes