SmartGen HOC300 Over Current Protection Relay Multifunctional Protection Module User Manual

SmartGen HOC300 Over Current Protection Relay Multifunctional Protection

Module

Table 1 Version History

Table 2 Symbol Instruction

CAUTION

| Indicates a procedure or practice, which, if not strictly observed, could result in

damage or destruction of equipment.

OVERVIEW

HOC300 over the current protection relay is widely used in marine Genset fields and land genset fields. HOC300 over current protection relay detects load current accurately. Over-current trip or pre-trip relay outputs and alarm protection activates when the load current has exceeded the set value.

PERFORMANCE AND CHARACTERISTICS

• Suitable for 3 phase 4 wire, 3 phase 3 wire, single phase 2 wire, an d 2 phase 3 wire systems with frequency 50/60/400Hz;
• Detects load current accurately.
• Adjustable potentiometer allows for set value adjusting and delay value setting.
• relay output
• One test button, test the over current trip/pre trip relay and indicator.
• W idely power supply range DC(8~35)V, suitable to different starting battery voltage environment;
• 35mm guide rail mounting.
• Modular design, pluggable terminal, compact structure with easy installation

TECHNICAL PARAMETERS

Table 3 Technical Parameters

Insulation Intensity

| Apply AC2.2kV voltage between high voltage terminal and low voltage terminal;

The leakage current is not more than 3mA within 1min.

Weight| 0.24kg

PANEL TERMINAL DESCRIPTION

Table 4 Description of Terminal Connection

3

| ****

Pre-TRIP RELAY

| ****

Normally Open

| ****

2.5 mm2

| Active when the load current has exceeded the set value and the delay timer has expired while deactivate when the load

current returns to normal.

| ****

Normally open; Volts          free

output;          5A Rated

4

| ****

COM

5| Normally Open
6| ****

TRIP RELAY

| Normally

Close

| ****

2.5 mm2

| Active when the load current has exceeded the set value and the delay timer has expired while deactivate when the load

current returns to normal.

7| COM

8

| ****

Normally Open

9| ****

IL1

| Dotted Terminals| ****

1.5 mm2

| CT A-phase input; Externally connected to secondary coil of current transformer (rated

5A).

10|
11| ****

IL2

| Dotted Terminals| ****

1.5 mm2

| CT B-phase input; Externally connected to secondary coil of current transformer (rated 5A).
12|
13| ****

IL3

| Dotted

Terminals

| ****

1.5 mm2

| CT C-phase input; Externally connected to secondary coil of current transformer (rated 5A).
14|
LINK

Port

| Used for parameters setting.

FUNCTION DESCRIPTION

Table 5 Function Description

powered up. (green light)

Pre-Trip Indicator

| It flashes once per second when the load current has exceeded the set value and Pre-TRIP indicator light on when the delay timer has expired. The

indicator extinguished after current returns to normal. (red light)

Trip Indicator

| It flashes once per second when the load current has exceeded the set value and TRIP indicator light on when the delay timer has expired. The indicator

extinguished after current returns to normal. (red light)

TEST Button

| Press the button for 3 seconds and enter the Test Mode. The Pre-Trip relay and Pre-Trip indicator output; Release and press the button again, the over curren trip relay and indicator output. Press the button a third time to exit the Test Mode. Exit the Test Mode after 30s without any operation.
TRIP /%

Over Currrent Trip Set Value

| Used for adjusting over current set value. Range: (50~140)%; Setting value is the percentage of rated current value(5A).
DELAY /s

Delay                  Value

Potentiometer

| ****

Used for adjusting over current action delay value. Range: (1~60)s

Pre-TRIP /%

Pre-Trip Set Value

| Used for adjusting pre-trip set value. Range: (50~140)%; Setting value is the percentage of rated current value(5A).
DELAY /s

Delay                  Value

Potentiometer

| ****

Used for adjusting delay value. Range: (1~60)s

SCOPES AND DEFINITIONS OF PROGRAMMABLE PARAMETERS

Table 6 Programmable Parameters

2: 2P3W, 3:1P2W

2| CT Ratio| (5-6000)/5| 500|
3| Full Load Rated Current| (5-6000)A| 500|
4| Communication

Address

| (1-254)| 1|

PC Program:
Parameters setting and real time monitoring can be implemented via LINK port by using PC software and an SG72 adapter which produced by our company. As follows:

TYPICAL DIAGRAM

INSTALLATION DIMENSIONS

Output And Expand Relay s
All outputs are relay contact output type. If need to expand the relays, please add a freewheel diode to both ends of expanding relay’s coils (when the coils of the relay has DC current) or, add a resistance-capacitance return circuit (when coils of the relay has AC current), in order to prevent disturbance to controller or others equipment

AC Input
Current input must be connected to the outside current transformer. And the current transformer’s secondary side current must be 5A.
Note: When there is a load current, the transformer’s secondary side prohibits an open circuit.
3) Withstand Voltage Test
CAUTION!
When the relay had been installed in the control panel, if need the high- voltage test, please disconnect the relay’s all terminal connections, in order to prevent high voltage into the relay and damaging it.
Smarten Technology Co., Ltd
No.28 Jinsuo Road, Zhengzhou, Henan Province, China
Tel: +86-371-67988888/67981888/67992951 +86-371-67981000(overseas)
Fax: +86-371-67992952
Email: sales@smartgen.cn
Web:
www.smartgen.com.cn
www.smartgen.cn
All rights reserved. No part of this publication may be reproduced in any material form (including photocopying or storing in any medium by electronic means or other) without the written permission of the copyright holder. Smarten Technology reserves the right to change the contents of this document without prior notice.

References

• 众智科技
• smartgen.cn/
• 众智科技

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