Q&A  Electrical controllers

No Q&A content available for Electrical Controllers.

Shock Relay

Words 

Selection

Q1 Is it possible to use a motor with a motor capacity greater than 90kW with TSB152?
Q2 Can Shock Relay be used with a single-phase motor?
Q3 I want to use Shock Relay for a single-phase motor, which series are compatible?
Q4 I am considering of using Shock Relay 150 series for a motor with a rated current value of 265A. If I try to set the current to 1.2 times the rated current value, the current will exceed 300A. Can I use TSB300AT in this case?
Q5 I want to use Shock Relay for an inverter motor, which series are compatible?
Q6 I want to use Shock Relay with a pole-changing motor. Is it supported?
Q7 Are there any series of Shock Relay that can handle a control power supply voltage of 440V?
Q8 Can Shock Relay be used to detect increase in current of heater? Can it be used as long as it is within the current setting range?
Q9 Can Shock Relay 150 series support an operating power supply voltage of AC 400V?
Q10 Is there Shock Relay that can be used with high-voltage motor with a motor capacity of 110 kW and 6600V?
Q11 When selecting Shock Relay, should it be based on motor capacity or rated current value?
Q12 I would like to know the overcurrent value when tripped later, which series do you recommend?

Package

Q13 Is it okay to switch on the operating power supply for Shock Relay before or after the motor starts?
Q14 I purchased Shock Relay 150 series, can I change it to the panel-mounted type?
Q15 Is there any specification for Shock Relay 150 series that allow switching between "self-holding" and "automatic reset"?
Q16 Is a current display value of Shock Relay an average of 2 phases?
Q17 With Shock Relay SB series, does a monitor lamp turn on when a motor is not running?
Q18 The upper limit of ambient temperature for TSB152 is 50°C, however what problems may occur if it is used at 55°C?
Q19 In the instruction manual for Shock Relay 150 series, the current transformer is wired to phase W. Is there a problem if it is connected to phase U or V?
Q20 For Shock Relay SB series, the note for minimum applicable load of output relay is described as " ... output relay contact ... a minute current via the relay ...", however not for ED series. Is it not necessary for ED series?
Q21 What happens if DIP switch is switched without switching power off? Will it break?
Q22 Does Shock Relay SB series comply with IEC standards (International Electrotechnical Commission)?

Installation method

Q23 Can Shock Relay be used for press contact stop applications?
Q24 Is there a rule to decide whether Shock Relay should be installed on the primary side or the secondary side of electromagnetic contactor or thermal?
Q25 Is there a recommended percentage of the rated value for Shock Relay overcurrent setting?
Q26 Regarding the wiring to CT of TSBSB100-300, the instruction manual distinguishes between power supply side and motor side. For those that are not externally mounted, it can be wired from either side as long as the two directions are matched, however is this different for external CT?

others

Q27 I would like a material certificate (mill sheet) for my Shock Relay - can you issue one?
Q28 What does locked start mean?
Answers
Q1 Is it possible to use a motor with a motor capacity greater than 90kW with TSB152?
A1

TSB300AT can be used if the motor has a rated current value of 300 A or less.

If the motor has a rated current value of 300 A or more, a current transformer suitable for the rated current value is required.

TSB400AT for 400A or less and TSB500AT for 500A or less are available for quotation.

Back to questions
Q2 Can Shock Relay be used with a single-phase motor?
A2

Although the connection method is different from that of a three-phase motor, it can be used as long as the current value is within the current setting range.

Back to questions
Q3 I want to use Shock Relay for a single-phase motor, which series are compatible?
A3

Please select from ED series or SB series.

Back to questions
Q4 I am considering of using Shock Relay 150 series for a motor with a rated current value of 265A. If I try to set the current to 1.2 times the rated current value, the current will exceed 300A. Can I use TSB300AT in this case?
A4

Please select the quotation product TSB400AT.

Back to questions
Q5 I want to use Shock Relay for an inverter motor, which series are compatible?
A5

Only ED series is compatible with an inverter motor. (Frequency range: 20 Hz to 200 Hz).

SB series and 150 series can be used if it is within the range of 30Hz to 60Hz.

Back to questions
Q6 I want to use Shock Relay with a pole-changing motor. Is it supported?
A6

Pole-changing motor cannot be used because, for example, the current value changes between 4 poles and 8 poles.

Back to questions
Q7 Are there any series of Shock Relay that can handle a control power supply voltage of 440V?
A7

None of Shock Relays are compatible.

Back to questions
Q8 Can Shock Relay be used to detect increase in current of heater? Can it be used as long as it is within the current setting range?
A8

Shock Relay can be used with heaters as long as there is a current change. Select based on maximum current.

Back to questions
Q9 Can Shock Relay 150 series support an operating power supply voltage of AC 400V?
A9

Not supported.

Back to questions
Q10 Is there Shock Relay that can be used with high-voltage motor with a motor capacity of 110 kW and 6600V?
A10

Cannot be used with the current transformer (CT) provided by us.

However, a commercially available high-voltage CT can be used in combination with TSB152.

It is recommended to purchase directly from the current transformer manufacturer.

Back to questions
Q11 When selecting Shock Relay, should it be based on motor capacity or rated current value?
A11

Please select according to the rated current value.

Back to questions
Q12 I would like to know the overcurrent value when tripped later, which series do you recommend?
A12

If ED series is set to "self-holding", the current value remains for one time. After resetting, the current value disappears.

Back to questions
Q13 Is it okay to switch on the operating power supply for Shock Relay before or after the motor starts?
A13

Make sure to switching on the operating power supply before starting the motor, as switching on the operating power supply while current is flowing through the current transformer may cause malfunction.

Back to questions
Q14 I purchased Shock Relay 150 series, can I change it to the panel-mounted type?
A14

The case, base and transformer must be replaced to panel type and is not recommended for customer replacement.

Please contact us, as we can replace them.

Back to questions
Q15 Is there any specification for Shock Relay 150 series that allow switching between "self-holding" and "automatic reset"?
A15

Shock Relay 150 series can not switch between "self-holding" and "automatic reset".

Back to questions
Q16 Is a current display value of Shock Relay an average of 2 phases?
A16

The higher of two phases is displayed.

Back to questions
Q17 With Shock Relay SB series, does a monitor lamp turn on when a motor is not running?
A17

A monitor lamp does not turn on. Please check operation with a test button.

Back to questions
Q18 The upper limit of ambient temperature for TSB152 is 50°C, however what problems may occur if it is used at 55°C?
A18

Internal components (transformer, power supply circuit component, etc.) may be damaged due to heat generation.

Back to questions
Q19 In the instruction manual for Shock Relay 150 series, the current transformer is wired to phase W. Is there a problem if it is connected to phase U or V?
A19

The current transformer can be connected to any of phase U, V or W.

Back to questions
Q20 For Shock Relay SB series, the note for minimum applicable load of output relay is described as " ... output relay contact ... a minute current via the relay ...", however not for ED series. Is it not necessary for ED series?
A20

Also required for ED series. Also required for all series of Shock Relay.

Back to questions
Q21 What happens if DIP switch is switched without switching power off? Will it break?
A21

It will not break by switching DIP switches.

However, the logic of relay is reversed, so the relay will not operate correctly if used as it is.

Be sure to switch off the power supply once, even after switching.

Back to questions
Q22 Does Shock Relay SB series comply with IEC standards (International Electrotechnical Commission)?
A22

SB series and ED series are CE marking products and therefore comply with IEC standards.

Back to questions
Q23 Can Shock Relay be used for press contact stop applications?
A23

When Shock Relay is used for press contact stop, there is a delay in shock time and time delay in a contactor for a motor, etc. Even if it can be stopped, there is a risk of damage to devices due to an instantaneous mechanical shock, which makes it difficult to use.

Back to questions
Q24 Is there a rule to decide whether Shock Relay should be installed on the primary side or the secondary side of electromagnetic contactor or thermal?
A24

It does not matter whether they are connected to the primary or secondary side.

Back to questions
Q25 Is there a recommended percentage of the rated value for Shock Relay overcurrent setting?
A25

As it varies depending on conditions, please judge by the customer based on actual operation.

Back to questions
Q26 Regarding the wiring to CT of TSBSB100-300, the instruction manual distinguishes between power supply side and motor side. For those that are not externally mounted, it can be wired from either side as long as the two directions are matched, however is this different for external CT?
A26

Although the instruction manual states motor side and power supply side, in practice there is no particular problem with wiring from either side.

Back to questions
Q27 I would like a material certificate (mill sheet) for my Shock Relay - can you issue one?
A27

We do not issue material certificates.

Back to questions
Q28 What does locked start mean?
A28

It means that the motor operates with the starting (locked) current, and there may be an excessive load under which the motor cannot start.

Back to questions