Voltage Transformers for Paraller Circuits

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Parallel transformers are designed to be connected to a normal line voltage (for example, 230VAC). They are typically used in heliports and helipads.
Transformers are manufactured to supply a certain voltage on the secondary side. Normally, the voltages are received from standard 6.6 A bulbs or from 12 V bulbs.
Possible connection methods involve using one core cable (KRV-type) or two core cable (KRVS-type). The standard primary voltage is 230 VAC, the max current rating 20 A and the frequency 50/60 Hz.

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KRV



KRV transformers have two primary leads, of 0.6 m, in a T-type connector which has a FAA interface L-823, a style 2 Plug, and the other end with a FAA823, style 9 receptacle.

The secondary lead is 1.2 m in length, cable type 2 x 2.5 mm2, 0.6kV with a receptacle FAA L823, style 7.

KRV transformers are installed using Efla’s standard KD510 series connector kits (page 5) or prefabricated unscreened leads and extension cords (page 7). End Caps (KDCVO1) are used at the end of the circuit.

KRV transformers are installed using Efla’s standard KD501 and KD502 series connector kits (page 5) or prefabricated secondary leads and extension cords (page 6). End Cap (KDVS.END) is used at the end of the circuit.

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KRVS


KRVS uses a standard FAA secondary connector for both incoming and outgoing interfaces. The primary lead length is 0.6 m and it has a style 1 connector. The secondary lead length is 1.2 m and it is equipped with a FAA L-823 style 7 connector.

Each transformer can be connected using a prefabricated distribution connector assembly, KDCV.P2R.

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Technical specification:

Efla Type	Efla Type	Primary Voltage	Secondary Voltage	Secondary Power
KRV530	KRVS530	230V	6.8V	45/50W
KRV536	KRVS536	230V	9.85V	65W
KRV540	KRVS540	230V	15.2V	100W
KRV546	KRVS546	230V	22.7V	150W
KRV550	KRVS550	230V	30.2V	200W

Connecting accessories:

Efla Type	DescriptionK
KDCVO1	End caps for KRV -series
KDCV.P2R	Distribution connector for KRVS -series
KDVS.END	End cap for KRVS -series

KDCV.P2R	KDVS.END	KDCVO1