INT185 Current transformer

The INT185 current transformer is used for current measurement of machines and equipment (e.g. motors of pumps). It is connected to the KRIWAN protective relays that have a current transformer input. The evaluation takes place in the KRIWAN protection relays. The small dimensions facilitate installation in the control cabinet. The current transformer is available in different versions, e.g. with measuring range up to 100A or up to 250A and with stranded wires with ferrules or with screw terminals.

Article number	Designation
02D186	INT185 Current transformer; AC 50/60 Hz 3-100 A
02D187	INT185 Current transformer; AC 20-100 Hz 5-100 A
02D188	INT185 Current transformer; AC 20-100 Hz 12,5-250 A

Product information

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The current transformer is connected to the current transformer input of the KRIWAN protective relays. The evaluation takes place in the KRIWAN protective relays. The current is measured single-phase by means of the current transformer. The phase of the motor is fed through the opening of the current transformer, and the current transformer acts as a feed-through transformer. For three-phase motors, the motor is assumed to be symmetrical. The current transformers differ in measuring range, frequency converter suitability and connection type. The differences are listed in the technical data table.

The following features distinguish the current transformer:

Single-phase current measurement for motors of machines and systems (e.g. pumps)
Connection to the current transformer input of the KRIWAN protection relays and evaluation in the KRIWAN protection relays
Can be snapped onto 35mm standard rail
Frequency converter suitability

	02D186	02D187	02D188
Measuring range	AC 50/60Hz 3-100A	AC 20-100Hz 5-100A	AC 20-100Hz 12,5-250A
Frequency converter suitable	No	Yes, at clock frequency 2-16 kHz	Yes, at clock frequency 2-16 kHz
Accuracy	±1% at a load of 33Ω and 20°C	Amplitude ±1% of MW, phase ±1° at a load of 75 Ω	Amplitude ±1% of MW, phase ±1° at a load of 75 Ω
Transmission ratio	1:2500	1:2500	1:6250
Permissible ambient temperature T_a	-30°C ≤ Ta ≤ +70°C	-30°C ≤ Ta ≤ +70°C	-30°C ≤ Ta ≤ +70°C
Permissible humidity	5-95% r. F.	0-95% r. F.	0-95% r. F.
Connection type	Stranded wires with ferrules	Stranded wires with ferrules	Screw terminals
Housing material	PA glass fiber reinforced	PA glass fiber reinforced	PC+ABS
Mounting	Can be snapped onto 35mm standard rail according to EN 60715 or screw mounting	Can be snapped onto 35mm standard rail according to EN 60715	Can be snapped onto 35 mm standard rail according to EN60715
Dimensions	See data sheet	See brief instructions	See brief instructions
Weight	150 g	150 g	250 g
Test basis	EN 61558-1 Overvoltage category II Pollution degree 2	EN 61558-1 Overvoltage category II Pollution degree 2	EN61869-6: 2016 EN61326-1: 2013