Resistenza Di Frenatura T14G

T14G Braking Resistor

Features

The T14G braking resistor is made with special resistive elements inserted and cemented into an anodized aluminum metal container with IP54 protection rating.

The materials used for this series of braking resistors are non-combustible and in any case in the event of a failure the container does not allow any leakage.

La forma costruttiva consente di ottenere elevate potenze, permette la massima dissipazione agli elementi resistivi e quindi è in grado di assorbire e dissipare grande energia per impulsi.

Possono essere utilizzare all’interno di quadri elettrici montate su dissipatore o su piastra metallica.

Excellent performance ratio in compact dimensions
Silenziosità
Compatibilità RHOS
Marking

USES

Power electronics for braking inverter-controlled motors
Drives

SPECIAL EXECUTIONS

With thermostat

Download the documentation

RESISTANCE T14G DIMENSIONS

CODE	A	B	C	H
T14G/800	180	210	240	84
T14G/1200	245	275	305	84
T14G/2000	295	325	355	84

ELECTRICAL CHARACTERISTICS

MODEL	MAX POWER	POWER WATT	MIN. RESISTENZA OHM	MAX RESISTENZA OHM
T14G/800	800	500	5	250
T14G/1200	1200	650	5	400
T14G/2000	2000	800	8	600

Maximum power usable for 60 minutes
Ohm value tolerance +/-10% +/- 5% +/- 2%
Limit voltage 2000V
Resistenza d’isolamento >500Mohm a 500VDC
Isolamento elettrico 50Hz 60” 3500V
Temperatura max 300°C
350mm connection cables
Cavo in vetro gomma silicone TS2V CU/NI sez.4 mmq resistenze alla temperatura di 250°C 500V in conformità con le norme IEC EN 60228 cl 5 e CEI EN 50363

WORKLOAD CYCLE

MODEL	PERIODO DI CARICO IMPULSI CLICO 120°
MODEL	3° W	12° W	36° W	60° W
T14G/800	14000	4500	1700	1000
T14G/1200	16000	4800	2000	1400
T14G/2000	20000	5700	2600	2100

OVERLOAD CONDITIONS

Resistors are used for overload operation, such as precharging of capacitors, dynamic braking of VFDs.

We can distinguish between 3 types of overload conditions:

one is the single pulse (emergency braking, pre-charge in case of short circuit or abnormal setting)
the second is the cyclic workload (e.g. as per the table above)
the third is an overload condition (i.e. due to a fault in the system) or long braking time.

In all cases, the mass of the wire or resistive alloy must be calculated appropriately for the power to be dissipated. The mass of the wire always depends on the ohmic value. To help dissipate heat, the resistor is filled with silica.

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For cyclic operation, the allowable braking power can be easily calculated in relation to the off duty cycle (ton / total time): Braking power = Rated power * (1 / Cycle)

This is only valid if the period is not longer than 300 s.

Nella tabella sopra viene mostrata la potenza massima che è possibile fornire per diverso ciclo di lavoro.