DP Current Transformer

Q: How much headroom should I leave on the power rating?

For continuous industrial duty plan on 20-30 % headroom above the measured load. For loads with high inrush, such as motors or capacitive input, allow more and check the surge rating rather than only the average current.

Q: Do these units accept 110 V and 230 V mains?

Input ranges are model-specific and shown in the specification table. Where a wide-range input is available it is stated; otherwise send your mains voltage and we will match the model.

Q: What protection features are built in?

Typical protection covers short circuit, over-current, over-voltage and thermal shutdown. The exact set is listed per model in the specification table above.

Q: Can you supply matching DIN-rail or enclosed versions?

Open-frame, enclosed and DIN-rail variants exist across this family. Send the model you are working from and we will confirm the equivalent mounting option.

About the DP Current Transformer

The DP Current Transformer is part of the ELEHPD Current Transformer range. Split core current transformers DP series ELEHPD manufactures and exports low voltage electrical products from Yueqing, Zhejiang, China, supplying distributors, panel builders, M&E contractors and OEM buyers worldwide.

Typical applications

Industrial control panels and PLC power rails
LED drivers, signage and display power
Battery charging and DC backup systems
Motor drives, welding sets and rectifier assemblies
Instrumentation and test equipment

How to specify the right Current Transformer

Size the output current with at least 20-30 % headroom over the load
Check the input range covers the local supply, including brown-outs
Confirm the enclosure and cooling method for the panel temperature
Verify the protection set: over-current, over-voltage, thermal and short circuit

Specifications

DP Current Transformers

Split core current transformers DP series:

The DP series of current transformers have been especially designed to facilitate their installation in new or already existing networks. Thanks to its split core they may be installed without opening any cable or bus bar circuit.
The connection of conventional CTs usually requires the interruption of the primary side circuit to pass cables or bus bars through the transformer core or to connect such cables to the primary terminals. The DP series transformers core may be easily opened and they may be installed and connected without any supply interruption, thus saving time and installation costs.

The main features of DP transformers are:
-Small size and easy mounting
-Wide inner window, allowing clamping of big cables or bus bars
-Wide range of sizes to accomodate all the existing installations
-High accuracy and reliability

Split core current transformers DP series:

Primary current:
Secondary current:
Standard approval:
Maximum voltage:
Frequency:
Rated load:
Class:
Short-time thermal current:
Rated security coefficient:

5A, 1A
IEC44-1, BS7626
0.72/3kV
50/60Hz
1VA-30VA
0.5, 1.0, 3.0
Ith=100 X In
FS<5

Model	A	B	C	D	E	F	G	H	I	Weight(kg)
DP-23	20	30	51	89	111	34	47	40	32	0.75
DP-58	50	80	78	114	145	32	32	32	33	0.90
DP-88	80	80	108	144	145	32	32	32	33	1.05
DP-812	80	120	108	144	185	32	32	32	33	1.25
DP-816	80	160	120	184	245	52	52	52	38	4.3

Technical data & Specification:

Model	Nominal current ratio
Class:0.5
VA
DP-23	100	-
150	-
200	-
250	-
300	1.5
400	2.5
DP-58	250	1.5
300	1.5
400	1.5
500	2.5
600	2.5
750	2.5
800	2.5
1000	5
DP-88	250	1.5
300	1.5
400	1.5
500	2.5
600	2.5
750	2.5
800	2.5
1000	5
DP-812	500	2.5
600	2.5
750	2.5
800	2.5
1000	6
1200	6
1250	7.5
1500	7.5
DP-816	1000	1.
1500	15
2000	15
2500	15
3000	20
4000	20
5000	20

outline drawing:

Frequently asked questions about the DP Current Transformer

How much headroom should I leave on the power rating?

For continuous industrial duty plan on 20-30 % headroom above the measured load. For loads with high inrush, such as motors or capacitive input, allow more and check the surge rating rather than only the average current.

Do these units accept 110 V and 230 V mains?

Input ranges are model-specific and shown in the specification table. Where a wide-range input is available it is stated; otherwise send your mains voltage and we will match the model.

What protection features are built in?

Typical protection covers short circuit, over-current, over-voltage and thermal shutdown. The exact set is listed per model in the specification table above.

Can you supply matching DIN-rail or enclosed versions?

Open-frame, enclosed and DIN-rail variants exist across this family. Send the model you are working from and we will confirm the equivalent mounting option.