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New Arrival current protection relay SSD design
■ Introduction
▪ Protective Item
|
Item |
Trip Delay Time |
Conditions |
|
Over-current |
After O-Time |
/ |
|
Phase Loss |
Within 3 sec |
More than 70% of phase current deviation |
|
Locked Rotor |
The relay will be tripped in 0.5 sec by Locked Rotor when the current does not decrease 200% of setting after press D-Time. But, this function is not available if 1P is selected. |
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▪ Over-current range – 05 Type: 1~5A
30 Type: 5~30A
60 Type: 5~60A
▪ Display Trip cause by FND
▪ Manual (Instantaneous) Reset / Electrical Reset
▪ Selected function by DIP SW 1P (1 Phase) / 3P (3 Phase)
▪ Selected Relay output – Fail safe (N) / Non – fail safe(R)
▪ Use on secondary of Inverter: 20~200Hz
Current relay hvac ■ Relay Fascia
※State of Input / Output
■ Typical Wiring Diagram
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HTHY-SSD R Type |
HTHY-SSD N Type |
/ |
■ Dimension
<Table#1 Definite time characteristics
■ Specification
|
Setting |
Over-current |
05 |
1~5A |
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30 |
3~30A |
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60 |
10~60A |
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Delay Time |
D-Time |
1~30sec |
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Operating Time |
O-Time |
0.5, 1~10sec |
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Reset |
Manual (Instantaneous) Reset / Electrical Reset |
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Operation Characteristic |
Over-current |
Definite Time Type |
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Tolerance |
Current |
I < 1A : ±0.05A , I > 1A : ±5% |
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Time |
T ≤ 3s : ±0.2s , t > 3s : ±5% |
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Ambient Temperature |
Operation |
-20°C~60°C |
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Storage |
-30°C~80°C |
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Ambient Humidity |
30~85% RH without condensation |
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Control Voltage |
▪ 110 : 110VAC ±15%, 50/60Hz |
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Output Contacts |
2-SPST(1a1b) |
3A / 250VAC , Resistive |
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Insulation |
Between Casing & Circuits |
500VDC Megger 10MΩ |
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Dielectric Strength |
Between Casing & Circuits |
2.0kV 60Hz , 1min |
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Between Contacts |
1.0kV 60Hz , 1min |
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Between Circuits |
2.0kV 60Hz , 1min |
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Mounting |
35mm Din Rail or Panel |
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Power Consumption |
Less than 2VA |
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Electrostatic Discharge |
IEC6100-4-2 |
Level 3 : Air Discharge : ±8kV, |
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Radiated Electromagnetic Field Disturbance |
IEC61000-4-3 |
Level 3 : 10V/m ,80-1000MHz |
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EFT / Burst |
IEC61000-4-4 |
Level 3 : ±2kV , 1min |
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Surge |
IEC61000-4-5 |
Level3 : 1.2X50μs, ±2kV (0° , 90° , 180° , 270°) |
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Conducted disturbance |
IEC61000-4-6 |
Level3 : 10V , 0.15 -80MHz |
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1MHz Burst disturbance |
IEC61000-4-12 |
Level3 : 2.5kV , 1MHz |
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Emission |
IEC60255-25 |
Radiated & Conducted Emission |
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■ Trip Display
|
Trip cause |
FND Indication |
Description |
|
Over Current |
|
Tripped after sensing over- current 10A during operation |
|
Phase Loss |
|
Phase Loss of L1(R) |
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Phase Loss of L2(S) |
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Phase Loss of L3(T) |
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Locked Rotor |
|
Tripped after sencing Locked Rotor during starting |
■ TEST
It has function to check and confirm the status of the relay by depressing the TEST button on the facia.
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When Motot is stopped |
Durring Motor operating |
|
Whenever you depressing the test button, you can check and confirm the setting value of each mode. If the relay enters into“TEST”mode, it begins to countdown preset value of O-Time after waiting 3 sec and becomes trip state as showing“END”message. |
Whenever you depressing the test button, you can check and confirm the setting value of each mode. |
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■ How to Setup
1）Over-current: Set the rated motor current of its name plate. For protection of connected machinery with motor, it is recommended to set the 110~115% of real running current after motor current is stabilized.
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No. |
Function |
Setting Range |
FND Display |
Description |
|
1 |
Over- current |
05 Type : 0.5A~6A 30 Type : 3~30A 60 Type : 10A~60A |
|
▪ 0.5~5A : 0.1A steps ▪ 3~30A : 1A steps ▪ 10~60A : 1A steps |
|
2 |
Start Delay Time |
1~30 sec |
|
▪ 1 sec steps |
|
3 |
Over- current Trip Delay Time |
0.5, 1~10 sec |
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▪ 0.5 sec ▪ 1~10sec (1sec steps) |
|
4 |
TEST |
Display END after elapsing 3 sec + preset O-Time |
3 sec + Preset O –Time Cannot achieve a test during driving. |
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Overcurrent relays ■ Ordering Information
|
Model name |
1 |
2 |
3 |
Accessory |
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|
H |
T |
H |
Y |
S |
S |
D |
- |
0 |
5 |
D |
M |
7 |
2CT-D-100 |
|
/ |
1 |
2 |
3 |
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Current Range |
Relay Output |
Power supply |
Frequency |
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HTHYSSD-05DM7 |
05 Type |
05 |
D:b-a |
D |
220VAC |
M |
50/60HZ |
7 |
|
HTHYSSD-30DM7 |
30 Type |
30 |
type |
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HTHYSSD-60DM7 |
60 Type |
60 |
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HTHYSSD-05DF7 |
05 Type |
05 |
110VAC |
F |
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HTHYSSD-30DF7 |
30 Type |
30 |
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HTHYSSD-60DF7 |
60 Type |
60 |
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HTHYSSD-05DR7 |
05 Type |
05 |
440VAC |
R |
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HTHYSSD-30DR7 |
30 Type |
30 |
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HTHYSSD-60DR7 |
60 Type |
60 |
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HTHYSSD-05DB |
05 Type |
05 |
24VAC/DC |
B |
/ |
/ |
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HTHYSSD-30DB |
30 Type |
30 |
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HTHYSSD-60DB |
60 Type |
60 |
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HTHYSSD-05DQ |
05 Type |
05 |
/ |
/ |
380VAC |
Q |
/ |
/ |
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HTHYSSD-30DQ |
30 Type |
30 |
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HTHYSSD-60DQ |
60 Type |
60 |
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100:5 |
D1 |
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150:5 |
DH |
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200:5 |
D2 |
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300:5 |
D3 |
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400:5 |
D4 |
※In case of combination with external CT
Ring CT Type inscribes like as R1,R2…R4
SRCT Type inscribes as S1,SH,S2…S4
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Accessory |
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2CT |
Ratio |
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RCT |
Ratio |
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SRCT |
Ratio |
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2CT-D-100 |
2CT |
- |
D |
- |
100:5 |
RCT-100 |
RCT |
- |
100:5 |
SR-2CT-100 |
SR |
- |
2CT |
- |
100:5 |
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2CT-D-150 |
150:5 |
RCT-200 |
150:5 |
SR-2CT-150 |
150:5 |
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2CT-D-200 |
200:5 |
RCT-300 |
200:5 |
SR-2CT-200 |
200:5 |
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2CT-D-300 |
300:5 |
RCT-400 |
300:5 |
SR-2CT-300 |
300:5 |
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2CT-D-400 |
400:5 |
RCT-500 |
400:5 |
SR-2CT-400 |
400:5 |
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