Description

Clip-On Split Core Current Transformer

SP Series Split Core CT Clip-On Type

The SP Series clip-on split core current transformer is designed for retrofit metering and monitoring applications where the existing cable should not be disconnected.

Its openable clip-on construction allows the CT to be installed around existing conductors, making it practical for energy monitoring upgrades, sub-metering, digital energy audits, EMS, BMS, SCADA and IoTWatt 4.0 projects.

5A to 3000A Primary Range 5A / 1A Secondary Class 1 / Class 0.5 Clip-On Split Core Retrofit Friendly Cable Installation IoTWatt 4.0 Ready

Product Overview

Clip-on split core CTs are used when current measurement needs to be added to an existing electrical installation with minimal disruption. The CT opens and clips around the conductor, which helps reduce installation time compared with solid-core CTs that require conductor disconnection.

The SP Series can be used with compatible power meters, multifunction meters, energy meters, BMS, EMS, SCADA systems, data loggers and IoTWatt 4.0 gateways. It is suitable for feeder-level, machine-level and distribution-board-level current measurement.

Positioning: Clip-on split core CT for retrofit metering, sub-metering, EMS, control and industrial monitoring applications.

Why Clip-On CTs Matter

For many existing panels, the fastest way to add metering is not to dismantle the conductor. A clip-on CT makes this practical, especially for smaller feeders and retrofit energy monitoring points.

Fast retrofit metering
No cable disconnection
Reduced installation work
Feeder monitoring
Machine monitoring
Sub-metering
Energy audit points

Key Features at a Glance

Clip-On Split Core Design Allows installation around existing cables without removing the conductor.

Wide Primary Current Range Available for small feeders, DB circuits, MCC feeders and larger industrial loads.

5A or 1A Secondary Compatible with common power meters, multifunction meters and energy monitoring devices.

Class 1 and Class 0.5 Accuracy options support normal monitoring, sub-metering and cost allocation applications.

Panel Retrofit Friendly Useful where shutdown time is limited or cable removal is not practical.

IoTWatt 4.0 Ready Suitable for additional measurement points in Digital Energy Audit and EECA reporting projects.

General Specifications

Parameter	Specification
Product Type	Clip-on split core current transformer.
Rated Primary Current	5A to 3000A, depending on model and CT ratio.
Secondary Output	5A or 1A.
Accuracy	0.5% to 1% from 10% to 150% of full-scale range, depending on CT ratio, burden and model.
Accuracy Class	Class 1 and Class 0.5 options.
Dielectric Strength	4000V.
Certification	IEC 60044-1, CE, UL and RoHS.

Model Selection

Model	Primary / Secondary	Accuracy Class	Typical Use
SP-SCT-T24-100/5 SP-SCT-T24-100/1	100/5 100/1	Class 1 and Class 0.5	Small feeders, DB circuits and light industrial loads.
SP-SCT-T24-150/5 SP-SCT-T24-150/1	150/5 150/1	Class 1 and Class 0.5	Sub-metering and feeder monitoring.
SP-SCT-T24-200/5 SP-SCT-T24-200/1	200/5 200/1	Class 1 and Class 0.5	Medium load feeders and panel meters.
SP-SCT-T24-250/5 SP-SCT-T24-250/1	250/5 250/1	Class 1 and Class 0.5	Distribution-board metering and EMS points.
SP-SCT-T36-300/5 SP-SCT-T36-300/1	300/5 300/1	Class 1 and Class 0.5	Larger feeders and machine-level monitoring.
SP-SCT-T36-400/5 SP-SCT-T36-400/1	400/5 400/1	Class 1 and Class 0.5	Industrial feeder metering and monitoring.
SP-SCT-T36-500/5 SP-SCT-T36-500/1	500/5 500/1	Class 1 and Class 0.5	High-current feeders and main distribution boards.
SP-SCT-T36-600/5 SP-SCT-T36-600/1	600/5 600/1	Class 1 and Class 0.5	Large loads, utility feeders and plant monitoring points.

Selection note: Select the CT based on primary current, cable size, required 5A or 1A secondary output, meter input type, burden, cable length and required accuracy class.

Product Images

Why Use Clip-On Split Core CTs?

Existing Cable Installation Useful when metering is added after the electrical installation is already completed.

Lower Installation Time Reduces installation work compared with solid-core CTs that require cable disconnection.

Feeder-Level Visibility Supports feeder, machine, production line, tenant and distribution board monitoring.

Energy Audit Ready Useful for creating extra measurement points for digital energy audit evidence.

Compact Metering Upgrade Practical for EMS, BMS, SCADA and IoTWatt 4.0 retrofit projects.

Power Meter Integration Works with compatible multifunction meters, RS485 meters and gateway-based monitoring systems.

Installation and Commissioning Notes

Correct CT installation is important for accurate current, kW and energy measurement. The CT ratio must be configured correctly in the connected meter, and the CT must be installed in the correct direction where power direction is important.

Confirm CT ratio
Confirm 5A or 1A meter input
Check CT window size
Check cable diameter
Install with correct polarity
Check kW direction
Check phase matching
Check burden and cable length

Safety note: CT installation should be performed by competent electrical personnel. For 5A / 1A CTs, the CT secondary circuit should not be left open while current is flowing in the primary conductor.

Integration with Energy Monitoring Systems

The SP Series can be connected to compatible multifunction meters and power meters, which then communicate to EMS, BMS, SCADA or IoTWatt 4.0 through RS485, Ethernet, gateway or data logger integration.

Multifunction meters
Power meters
kWh meters
RS485 meters
IoTWatt 4.0 gateways
Current monitoring
kW / kWh monitoring
Demand monitoring
Load profiling
Tenant allocation
Energy audit measurement
EECA reporting support
Savings verification

Recommended CT Selection Checklist

Confirm cable diameter
Confirm primary current range
Confirm CT ratio
Confirm 5A or 1A secondary
Confirm connected meter burden
Confirm cable length burden
Confirm accuracy class need
Confirm panel space
Confirm clip access
Confirm CT polarity direction
Confirm phase matching
Test current and kW reading

SP Series CT Supply and Energy Monitoring Integration

Saturn Pyro supports SP Series clip-on split core CTs for energy metering, sub-metering, EMS, BMS, power monitoring, IoTWatt 4.0 metering points and industrial retrofit projects in Malaysia.

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More detail about Saturn Pyro Sdn Bhd

Split Core CT (Clip-On SP Series)