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Compact Modular Recloser 

Intelligent. Compact. Self-powered by voltage.
Introduction

The new class of auto-recloser

The Compact Modular Recloser (CMR) approaches overhead distribution protection in a new way. Its unique design provides fundamental protection and monitoring capabilities for single and multi-phase applications. It presents a quantum leap in technology for cost effectively improving the reliability of overhead medium voltage networks. Featuring a fully insulated housing in a compact design, the lightweight device permits easy installation and fast commissioning. An intuitive interface, wireless connectivity and SCADA integration capability ensure a high degree of user convenience and flexibility. Comprehensive rating options and the practical design of the CMR enable unrestricted deployment onto both urban and rural networks.

Single-phase application

Superior ratings up to 38 kV, its modular concept and unique characteristics put the CMR at the forefront of the auto-recloser market. Featuring fully configurable protection and four operations in a sequence, the unit is the ideal solution for sectioning faults on long rural distribution lines. Its unmatched capabilities make it suitable for all sites, even those with inconsistent or no line current.

By eliminating the need for regular maintenance and utilising line voltage as power supply, this new auto-recloser generation addresses all common problems of obsolete hydraulic reclosers. The CMR switch unit has no need of periodic inspection and maintenance¹. It is designed to deliver a 25-year uninterrupted service life. For greater flexibility, utilities can choose between pre-configured options as a drop-in alternative to a traditional hydraulic recloser or to self-configure the devices to take advantage of advanced protection, measurement and logging features.

Multi-phase application

Without requiring auxiliary power supply, the CMR is suitable for urban and rural networks. The system features an integrated controller in the pole top switch, eliminating the need for a separate control cubicle and associated cabling. Intuitive configuration, installation, operation and wireless access ensure maximum operator safety and usability.

Fully rated for voltage systems up to 27 kV this clever, completely integrated system makes pole mounted control cabinets, connecting cables and auxiliary supplies obsolete, resulting in lower investment cost and a faster ROI. It presents itself as the most economical option for sites requiring fundamental protection and switching applications.         

Key features

Compact Modular Recloser Ratings

Type tested according to IEC 62271-111 / IEEE C37.60
Switch Unit Parameters
Unit
1,2 & 3-phase
1-phase only
Rated voltage
kV
up to 27
38

Rated continuous current

A

630

630

Rated short time withstand current

kA

12.5

6.3

Rated peak withstand current

kA

32.5

16.4

Rated duration of short circuit

s

3

3

Rated symmetrical interrupting current

kA

12.5

6.3

Rated operating sequence 
 
O – 0.3s – CO – 2s – CO – 2s – CO
O – 0.3s – CO – 2s – CO – 2s – CO

Clearing time

ms

<50 ms

<50 ms

Rated line charging interrupting current

A

5

5

Rated cable charging interrupting current

A

25

40

Minimum number of operations at rated short circuit current 
 
70
240

Minimum number of load break operations at rated current/mechanical operations

 
10,000 
10,000 
IP rating 
 
67
67
Ratings Description
 
Model2
 
Model2
 
 

Rated maximum voltage

kV

12
17.5
27
27
38

Rated power frequency withstand – dry

kV

28
50
60
60
70

Rated impulse withstand voltage

kV

95
110
125
150
170
Service Environment
Rating

Operating temperature range

–403 to +55°C

Humidity

0 to 100%

Maximum altitude

4,000m  (Derating required above 1,000m)

Pollution class

Very Heavy

1 Excludes routine battery replacements every eight years

2 Correct model must be selected for the applicable system voltage (27 kV model cannot be used on a     
  12 kV network).

3 Reclose intervals must be extended at temperatures below –35°C

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