GB/T 21711.7-2018Electromechanical elementary relays -- Part 7: Test and measurement procedures (English PDF)

3.1 Relay type

3.1.1

Electromechanical relay electromechanicalrelay

An electrical relay that primarily produces a predetermined response to the motion of a mechanical component.

[IEV444-01-04]

3.1.2

With or without relay al-or-nothingrelay

An electrical relay that is energized by a certain amount of excitation whose value is within its operating value range or is actually zero.

[IEV444-01-02]

3.1.3

Basic relay elementaryrelay

Action and release with or without any predetermined delay.

[IEV444-01-03]

3.1.4

Monostable relay monostablerelay

An electrical relay that responds to an excitation quantity and has converted its state. When the excitation amount is removed, it returns to its original state.

[IEV444-01-07]

3.1.5

Bistable relay bistablerelay

Respond to a certain amount of incentives and have converted its state, and remain in this state after removing the stimulus; to convert this state,

Plus a suitable amount of incentives.

[IEV444-01-08]

3.1.6

Polarized relay

The state transition depends on the electrical relay of its DC excitation polarity.

[IEV444-01-09]

3.1.7

Non-polarized relay non-polarizedrelay

The state transition does not depend on the electrical relay of its DC excitation polarity.

[IEV444-01-10]

3.2 Relay type based on environmental protection method (manufacturing process RT)

3.2.1

RT0 open relay unenclosedrelay

Relay without protective casing.

3.2.2

RTI dustproof relay dustprotected

A relay with a dust-proof outer casing to protect its mechanical structure.

3.2.3

RTII solder resist relay fluxproofrelay

A relay that can be automatically soldered without removing flux outside the predetermined area.

Note. If closed structure is used, it can be exchanged with the outside atmosphere.

3.2.4

RTIII washable relay washtightrelay

A relay that automatically welds and is then subjected to a cleaning process to remove flux residues without the need to impregnate flux or cleaning agent.

Note. In practice, such relays are sometimes connected to the atmosphere after the soldering or cleaning process.

3.2.5

RTIV sealed relay sealedrelay

A relay with a casing that does not leak into the outside atmosphere has a time constant better than 2 x 104 s (see GB/T 2423.23-2013).

3.2.6

RTV hermetic relay hermeticalysealedrelay

Sealed relays with a high seal rating guarantee a time constant of better than 2 x 106s (see GB/T 2423.23-2013).

3.3 Relay function

3.3.1

Release state releasecondition

For monostable relays, the specified state for de-energizing; for bistable relays, one of the specified states declared by the manufacturer.

[IEV444-02-01]

3.3.2

Action state

For a monostable relay, a specified state for which it is energized and responded by a specified excitation amount; for a bistable relay, a statement for the manufacturer

The opposite state of the release state.

[IEV444-02-02]

3.3.3

Action (verb) operate(verb)

The transition from the release state to the action state.

[IEV444-02-04]

3.3.4

Release (verb) release(verb)

The transition from the action state to the release state applies to a monostable relay.

[IEV444-02-05]

3.3.5

Reset (verb) reset(verb)

The transition from the action state to the release state applies to the bistable relay.

[IEV444-02-06]

3.3.6

Conversion (verb) changeover(verb)

The action or release of a monostable relay, the action or reset of a bistable relay.

[IEV444-02-07]

3.3.7

Cycle (verb) cycle(verb)

For monostable relays, release after first action, or release after first action; for bistable relays, return after first action, or return first

After action.

[IEV444-02-08]

3.3.8

Reversal (verb) revert(verb)

For a special type of polarized relay, it is released again when excited by the amount of excitation required for its action and beyond its action.

Or reset, or remain in a released state.

[IEV444-02-09, modified]

3.3.9

Reverse reversal (verb) revertreverse(verb)

For a particular type of bistable polarization relay, when it is energized by an excitation amount required to reset its required polarity and exceed its reset,

Action, or keep in action.

[IEV444-02-10, modified]

3.4 Contact Type

3.4.1

Move contact makecontact

In the action state of the relay, the contact group is in the closed state and the release state is in the open state.

[IEV444-02-17]

3.4.2

Break contact breakcontact

In the action state of the relay, the contact group is in the open state and the release state is closed.

[IEV444-02-18]

3.4.3

Conversion contact change-overcontact

a combination of two contact circuits having three contacts, one of which is common to two contact circuits; the contact is broken

When the contact circuit is closed, the other contact circuit is closed.

[IEV444-02-19]

3.4.4

First break and then changeover contact change-overmake-before-breakcontact

The switching contact that closes the contact circuit before closing the contact circuit.

[IEV444-02-20]

3.4.5

Break-before-make conversion contact change-overbreak-before-makecontact

Disconnect the switching contact that the contact circuit opens before the closed contact circuit closes.

[IEV444-02-21]

3.5 Prefix for relay parameter values

The parameter values of the relay can be defined as rated, measured ("actual"), experimental ("must") or characteristic values, and one of these words is used.

As a prefix. These prefixes also apply to time values.

3.5.1

Rated value

The specification usage value is determined by a specified set of operating conditions of the relay.

[IEV444-02-18, modified]

3.5.2

Measured ("real") value actual("just") value

The measured magnitude is measured for a specific relay during the completion of the specified function.

[IEV444-02-21]

3.5.3

Test ("must") value test("must") value

The relay shall meet the specified amount of work during the test.

[IEV444-02-20]

3.5.4

Characteristic value

The relay shall comply with the specified requirements after its initial state or the number of cycles specified in its respective specification.

[IEV444-02-19, modified]

3.6 Incentive value

3.6.1

Incentive amount

Under the specified conditions, it is applied to the relay coil to make it suitable for the intended use.

[IEV444-03-01, modified]

Note 1. For basic relays, the amount of excitation is usually voltage. Therefore, in the definition given below, the input voltage is used as the excitation amount. When a relay is taken

When excited by a specified current, "current" is used in place of "voltage" in related terms and definitions.

Note 2. The general term "input voltage" used in IEV Chapter 444 applies to all types of basic relays (eg including solid state relays). Basic electromechanical succession

For electric appliances, according to the provisions of GB/T 21711.1-2008, the more specific term "coil voltage" is selected in the terminology of 3.6.

3.6.2

Coil voltage coil voltage

The voltage applied as the amount of excitation.

[IEV444-03-03]

3.6.3

Working range operativerange

A range of coil voltage values that enable the relay to perform its specified function.

[IEV444-03-05, modified]

Note. The following terms can be seen in Figures 3 to 7. The relay sequence functions specified by the terms are indicated in the figures.

3.6.4

Premagnetization value

The coil voltage value that causes the electromagnetic relay to reach the specified magnetization condition.

[IEV444-03-19]

Note 1. For polarized relays, there is a difference between forward (acting) pre-magnetization and reverse pre-magnetization.

Note 2. For bistable relays, pre-magnetization can also be used to make them in a specified state.

3.6.5

Non-operating voltage non-operatevoltage

The value of the coil voltage that prevents the relay from operating.

[IEV444-03-07, modified]

3.6.6

Operating voltage, set voltage (only for bistable relays) operatevoltage,setvoltage(forbistablerelaysonly)

The value of the coil voltage that causes the relay to operate.

[IEV444-03-06, modified]

3.6.7

Does not release voltage non-releasevoltage

The value of the coil voltage that does not release the monostable relay.

[IEV444-03-09, modified]

3.6.8

Release voltage releasevoltage

The value of the coil voltage that causes the monostable relay to be released.

[IEV444-03-08, modified]

3.6.9

No return voltage non-resetvoltage

The value of the coil voltage that causes the bistable relay to not return.

[IEV444-03-11, modified]

3.6.10

Reset voltage resetvoltage

The value of the coil voltage that resets the bistable relay.

[IEV444-03-10, modified]

3.6.11

Reverse voltage revertvoltage

For a particular type of polarized relay, the value of the coil voltage that causes the relay to reverse. The polarity of the coil voltage and the polarity of the operating voltage

The same value is greater than the operating voltage.

[IEV444-03-12, modified]

3.6.12

Non-reversal voltage non-revertvoltage

For a particular type of polarized relay, the coil voltage value that causes the relay to not reverse. The polarity of the coil voltage and the pole of the operating voltage

The same sex, the value is greater than the operating voltage.

[IEV444-03-13, modified]

3.6.13

Reverse reversal voltage revertreversevoltage

For a particular type of bistable polarization relay, the value of the coil voltage that reverses it in reverse. The polarity of the coil voltage and the reset voltage

The polarity is the same and the value is greater than the reset voltage.

[IEV444-03-14, modified]

3.6.14

Reverse reverse voltage non-revertreversevoltage

For a particular type of bistable polarization relay, it does not reverse the reversed coil voltage value. The polarity of the coil voltage and the return voltage

The polarity of the voltage is the same and the value is greater than the reset voltage.

[IEV444-03-15, modified]

3.6.15

Reverse polarity voltage reversepolarityvoltage

For a monostable polarization relay, the value of the coil voltage of the reverse polarity that does not operate.

[IEV444-03-16, modified]

3.6.16

Active power activepower

The average value of the instantaneous power p over a period T in the periodic state.

P=1/T integral

Pdt

Note 1. In the sinusoidal state, the active power is the real part of the complex power.

Note 2. In the International System of Units (SI), the unit of active power is watts (W).

[IEV131-11-42]

3.6.17

Apparent power apparentpower

The product of ...