Dimensional units:mm (Dimensions without tolerance are approximate
values)
Combustion device:
1. Spray lamp: a ribbon propane gas spray lamp with a nominal
length of 500mm and a width of 15mm, equipped with a Venturi mixer.
There are three rows of nozzles with a nominal diameter of 1.32mm
and a center distance of 3.2mm drilled holes.
2. Flow meter: Air flow meter: 80L/min; Propane flow meter: 5L/min
3. The composition of the spray lamp control system includes:
pressure regulating valve, piezoelectric igniter, extinguishing
device, temperature control thermocouple, gas source (provided by
your company), regulating valve, ignition device, gas pipeline,
flow meter, Venturi mixer, spray lamp, ball valve, air pipeline,
compressed air cylinder (user self-provided )
4. Timer: 0~99.99s/m/h, can be set arbitrarily
5. Ignition device: for automatic ignition
6. Temperature controller: composed of two temperature monitoring
parts, with a temperature range of 0~1000 ℃ and can be set
arbitrarily.
Including load: the test voltage is adjustable from 0 to 1000V;
Current range: 0.1-3A, the test current can be adjusted according
to standard requirements, but if it is greater than 3A, it will be
protected;
The load capacity should ensure that the test sample can continue
to be tested even when the test current approaches 3A.
The electrical circuit has appropriate protective devices to ensure
that during combustion or cable breakdown, personnel will not be
electrocuted and equipment will not malfunction due to cable
breakdown.
During the electrical circuit integrity test of the cable to be
tested during combustion, each circuit (three-phase) and neutral
point must be connected in series with a fuse to protect the
step-up transformer. When the safety wire fused disconnect, there
must be an indicator light to display the melting or grounding
phase.
For the convenience of operation, when calibrating the temperature,
the fixed position of the specimen deviates from the ignition
source. After calibrating the ignition source, manually move the
specimen to the ignition source position.
If a touch screen is selected, it has the following functions:
automatically detect the temperature of two thermocouples, display
the temperature curve through the touch screen, and prompt an alarm
when the standard set temperature upper and lower limits are
exceeded (display curve time range of 15 minutes, digital display
does not have this function).
Compliant with standard: manufactured and produced according to the national standard
GB/T19216.11-2003 IEC60331-11.
Scope of application: Used to test the ability of wires and cables to operate
continuously under specified conditions under a certain fire source
and time. The testing instrument consists of an integrated design
of the testing and control parts. The outer shell and important
components of the testing chamber are made of stainless steel and
are resistant to smoke and gas corrosion. The control system has a
high degree of automation, with automatic ignition, touch screen
display, convenient observation and recording, and stable and
reliable use.
Gas source for testing flames: Using propane gas or liquefied
petroleum gas with a purity of over 95% (user provided ).
The burner is a belt type propane gas nozzle with a Venturi mixer,
with a nozzle length of 500mm and a width of 15mm. There are three
rows of staggered small holes on the nozzle, with a diameter of
1.32mm and a spacing of 3.2mm.
The nozzle should be at least 200mm away from the bottom of the box
and at least 300mm away from any box wall. (Box to be equipped
separately)
The inner diameter of the metal ring is approximately 150 mm.
Equipped with dual flow meters and pressure regulation, with an air
flow meter range of 0.5-5 cubic meters per hour and a gas flow rate
range of 0.1-1 cubic meters per hour. Equipped with a temperature
measurement device (K-type thermocouple), under the condition of
(750+50 ℃, -0 ℃), burn for 10 minutes, and the temperature
difference between the two thermocouples shall not exceed 40 ℃. The
test process is automatically controlled.
Equipped with intelligent detection function, it automatically
alarms and turns off the fire source when a short circuit occurs in
the sample during the testing process.
Provide 5 metal rings with an inner diameter of approximately 150
mm as required by the standard, and the distance between the metal
rings can be freely adjusted to facilitate the fixation and support
of the test piece.
Stainless steel sample holder, with a load-bearing capacity of
30kg.
Excluding combustion chamber (combustion chamber requires 27 cubic
meters), customer provided air compressor (3HP)
