SmartGen HFT300 Frequency Test Relay Multifunctional Protection Module User Manual

SmartGen HFT300 Frequency Test Relay Multifunctional Protection Module

Smartgen — make your generator smart
Smartgen 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. Smartgen Technology reserves the right to change the contents of this document without prior notice.
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

HFT300 frequency test relay is widely used in marine genset field and land genset field.
The corresponding over/under frequency relay outputs and alarm protection activates when the frequency has exceeded/fallen below the set value.

PERFORMANCE AND CHARACTERISTICS

• Suitable for 3-phase 4-wire, 3-phase 3-wire, single phase 2-wire, and 2-phase 3-wire systems with frequency 50/60/400Hz;
• Over/under frequency protection function;
• Adjustable potentiometer allows for set value adjusting and delay value setting;
• relay output；
• One test button, test the over/under frequency relay and indicator;
• Widely 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

Over   Frequency     Relay

Output

| 5A    AC250V Volts free output
Under Frequency Relay Output| 5A    AC250V Volts free output
Case Dimensions| 89.7mm x 71.6mm x 60.7mm
Working Conditions| Temperature: (-25~+70)°C        Humidity: (20~93)%RH
Storage Conditions| Temperature:(-25~+70)°C

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

OVER     FREQ. RELAY

| Normally

Close

| ****

2.5 mm2

| ****

Active when the frequency has exceeded the set value and the delay timer has expired.

| ****

Normally open; Volts             free output; 5A Rated

4| COM
5| Normally Open
6| ****

UNDER FREQ. RELAY

| Normally Close| ****

2.5 mm2

| Active when the voltage has exceeded 50V while the frequency has fallen below the set value and the delay timer has expired.
7| COM
8| Normally Open
9| L1| 1.0 mm2| Phase Voltage Input
10| L2| 1.0 mm2
LINK

Port

| Used for parameters setting.

FUNCTION DESCRIPTION

Table 5 – Function Description

powered up. (green light)

OVER Indicator

| Over frequency Indicator; It flashes once per second when the frequency has exceeded the set value and illuminated when the delay timer has expired. if the frequency return within the set value range, alarm is removed automatically and indicator is extinguished.(red light)

UNDER Indicator

| Under frequency Indicator; It flashes once per second when the frequency has fallen below the set value and illuminated when the delay timer has expired. if the  frequency  return  within  the  set  value  range,  alarm  is removed

automatically and the indicator is extinguished.(red light)

TEST Button

| Press the button for 3 seconds and enter the Test Mode. The overfrequency relay and indicator output; Release and press the button again, underfrequency relay and indicatior output. Press the button a third time to

exit the Test Mode. Exit the Test Mode after 30s without any operation.

OVER /%

Over             Frequency Potentiometer

| Used for adjusting over frequency set value. Range: (100~120)%; Setting value is the percentage of rated frequency value.
DELAY/s

Delay                    Value

Potentiometer

| ****

Used for adjusting over frequency delay value. Range: (1~20)s.

UNDER /%

Under           Frequency Potentiometer

| Used for adjusting under frequency set value. Range: (80~100)%; Setting value is the percentage of rated frequency value.
DELAY /s

Delay                    Value

Potentiometer

| ****

Used for adjusting under frequency delay value. Range: (1~20)s;

SCOPES AND DEFINITIONS OF PROGRAMMABLE PARAMETERS

Table 6 – Programmable Parameters

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: Fig.2 – PC Program Connection

TYPICAL DIAGRAM

INSTALLATION DIMENSIONS

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

Withstand Voltage Test
CAUTION! When relay had been installed in control panel, if need the high voltage test, please disconnect relay’s all terminal connections, in order to prevent high voltage into relay and damage it.

References

• 众智科技
• smartgen.cn/
• 众智科技

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