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What is the maximum RTD cable distance

The maximum RTD cable distance is based on the length that will result to a lead resistance not exceeding 100 ohms (2-wire or 3 wire). For the 3rd wire RTD sensor, the maximum cable length is up to 200 feet (61 m). If longer cable lengths are required, then it is best to use a temperature...

What is the tripping time for RCCB (Residual current Circuit Breaker) ?

The tripping time for the RCCB is complying to the standard specifications for the RCCB. Find attached the tripping characteristics of RCCBs.

What is the difference between RCBO and RCCB Acti 9 products ?

- RCBO: is a device from Acti 9 range used for full protection functions (overload protection + Short circuit current protection + earth leakage protection with different sensitivities) - RCCB: is an earth leakage protection device only (stand alone device) that needs an external CB for basic...

What is the definition of ANSI 64REF - Restricted earth fault differential?

Detection of phase-to-earth faults on 3-phase windings with earthed neutral, by comparison of residual current calculated from the 3 phase currents and residual current measured at the neutral point. Characteristics instantaneous tripping percentage-based characteristic with fixed slope and...

Please advice if RCCB 30mA sensitivity is enough for human safety or not?

Regarding the residual current devices ,are used mainly for human protection against direct and indirect contact,and they are defined by their sensitivity and interference immunity (type AC,A,SI and B).Please refer to catalog pages attached for the selection of the suitable type and some...

What is meant by Cold Load Pickup (CLPU)? What causes the CLPU to be greater than the pre-outage current ?

Issue: Definition of CLPU Environment: Easergy P3 Protection function Resolution Cold load pickup is an overcurrent condition that takes place when a distribution circuit is re-energized following an extended outage. It is referred to as cold load because the power supply has been unavailable...

What is the difference between braking unit and braking resistor in AC drives?

A braking unit or sometimes called a braking chopper is an electrical switch (normally IGBT) that manages the DC bus voltage by switching the braking energy to a resistor where the braking energy is converted to heat. By activating the braking function, it can manage the DC bus voltage level and...

What is the definition of ANSI 67N/67NC - Directional earth fault?

Earth fault protection, with selective tripping according to fault current direction. 3 types of operation: type 1: the protection function uses the projection of the I0 vector type 2: the protection function uses the I0 vector magnitude with half-plane tripping zone type 3: the protection function...

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What is the part number of the cable used for communication between TSXSCP114 PCMCIA card and other RS485 device.

TSXSCPCM4030 cable is required from TSXSCP114 PCMCIA card to the Modbus branching device TSXSCA50 for connecting other RS485 device on the Modbus Network. In case TSXSCA50 Modbus branching device is not used, you can connect this cable directly to Modbus RS 485 device. For this you have to...

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